Hossein Nahavandchi
Om
Hossein Nahavandchi er professor i geodesi og geofysikk. Hans forskningsinteresser er klimaendringer/jordobservasjon ved hjelp av satellittdata, og nøyaktig GNSS posisjonering på smartphone/u-blox .
Biography: Hossein Nahavandchi holds a PhD degree (1998) from Royal Institute of Technology (KTH) in Stockholm. His primary research interest is satellite geodesy and GPS. He has been lecturing in the Geomatics and Geodesy fields since 1990. Since 2004 he is Professor for Geodesy and Geophysics at Norwegian University of Science and Technology (NTNU). He also worked for the National Mapping Authority in several functions. He was Head of department, Vice-Dean, Dean, and the Rector of the College of Engineering, Director of Research and Planning division, Chair of the Borad and Board member of Research and Planning division, and Chair of the Borad and Board member of Education department. His research projects and activities in Civil Engineering (BOA activities) have attracted more than 120 million NOK to the university sector since 1991. They have also resulted in a strong international network. Over 155 publications and presentations are the results of his research projects.
Forskning
SmartNav Positioning Engine: High-Precision GNSS Positioning for Autonomous Systems
ESA PRETTY GNSS-Reflectometry mission for studying ocean and ice surfaces
CentiNav: Precise GNSS Positioning with Low-cost Receivers for Next-Gen Mobility
Monitoring Ocean Microplastics using GPS observations
Remote Sensing of the Arctic and Ocean using GNSS Reflectometry observations
Groundwater depletion and dynamics from GRACE and hydrological observations
Quantifying land subsidence and groundwater exploitation using InSAR observations
Optimization of standard methodology of the InSAR technique
Quantifying water vapor contents using GNSS observations
Ocean wave parameters estimation using single GPS Buoy observations
Global warming and Greenland Ice melting from satellite gravity observations
Climate change in North Atlantic and the Arctic sea from satellite altimetry observations
Publikasjoner
2023
-
Rajabi, Mahmoud;
Hoseini, Mostafa;
Nahavandchi, Hossein;
Asgarimehr, Milad;
Semmling, Maximilian;
Ramatschi, Markus.
(2023)
Tidal harmonics retrieval using GNSS-R dual-frequency complex observations.
Journal of Geodesy
Vitenskapelig artikkel
2022
-
Hoseini, Mostafa;
Nahavandchi, Hossein.
(2022)
The potential of spaceborne GNSS reflectometry for detecting ocean surface currents.
Remote Sensing of Environment
Vitenskapelig artikkel
-
Safdari, Zohreh;
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2022)
A Technical Note on Least Squares
Mascon Fitting to GRACE Satellite Data
to Estimate Total Water Storage Changes
in the Middle East.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Safdari, Zohreh;
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2022)
Estimation of Groundwater Depletion in Iran’s Catchments Using Well Data.
Water
Vitenskapelig artikkel
2021
-
Rajabi, Mahmoud;
Hoseini, Mostafa;
Nahavandchi, Hossein;
Semmling, Maximillian;
Ramatschi, Markus;
Goli, Mehdi.
(2021)
Polarimetric GNSS-R Sea Level Monitoring using I/Q Interference Patterns at Different Antenna Configurations and Carrier Frequencies.
IEEE Transactions on Geoscience and Remote Sensing
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Semmling, Maximilian;
Nahavandchi, Hossein;
Rennspiess, Erik;
Ramatschi, Markus;
Haas, Rüdiger.
(2021)
On the Response of Polarimetric GNSS-Reflectometry to Sea Surface Roughness.
IEEE Transactions on Geoscience and Remote Sensing
Vitenskapelig artikkel
-
Asgarimehr, Milad;
Hoseini, Mostafa;
Semmling, Maximilian;
Ramatschi, Markus;
Camps, Adriano;
Nahavandchi, Hossein.
(2021)
Remote Sensing of Precipitation Using Reflected
GNSS Signals: Response Analysis
of Polarimetric Observations.
IEEE Transactions on Geoscience and Remote Sensing
Vitenskapelig artikkel
-
Rajabi, Mahmoud;
Hoseini, Mostafa;
Nahavandchi, Hossein;
Semmling, Maximilian;
Ramaschi, Markus;
Goli, Mehdi.
(2021)
A Performance Assessment of Polarimetric GNSS-R Sea Level Monitoring in the Presence of Sea Surface Roughness.
IEEE International Geoscience and Remote Sensing Symposium proceedings
Vitenskapelig artikkel
2020
-
Rajabi, Mahmoud;
Amiri-Simkooei, Alireza;
Nahavandchi, Hossein;
Nafisi, Vahab.
(2020)
Modeling and Prediction of Regular Ionospheric Variations and Deterministic Anomalies.
Remote Sensing
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Asgarimehr, Milad;
Zavorotny, valery;
Nahavandchi, Hossein;
Ruf, chris;
Wickert, Jens.
(2020)
First Evidence of Mesoscale Ocean Eddies Signature
in GNSS Reflectometry Measurements.
Remote Sensing
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Motagh, Mahdi;
Nahavandchi, Hossein;
Haghshenas, Mahmud;
Hoseini, Mostafa.
(2020)
Improving tropospheric corrections on large-scale Sentinel-1 interferogramsusing a machine learning approach for integration with GNSS-derived zenithtotal delay (ZTD).
Remote Sensing of Environment
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Alshawaf, Fadwa;
Nahavandchi, Hossein;
Dick, Galina;
Wickert, Jens.
(2020)
Towards a zero-difference approach for homogenizing GNSS tropospheric products.
GPS Solutions
Vitenskapelig artikkel
-
Rajabi, Mahmoud;
Nahavandchi, Hossein;
Hoseini, Mostafa.
(2020)
Evaluation of CYGNSS Observations for Flood Detection and Mapping during Sistan and Baluchestan Torrential Rain in 2020 .
Water
Vitenskapelig artikkel
2019
-
Hoseini, Mostafa;
Asgarimehr, Milad;
Nahavandchi, Hossein;
Wickert, Jens.
(2019)
Spaceborne GNSS-R Observations of Mesoscale Ocean Eddies; Preliminary Results from Cygnss Mission.
IEEE International Geoscience and Remote Sensing Symposium proceedings
Vitenskapelig artikkel
2018
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi;
Andy, Hooper.
(2018)
Efficient Ground Surface Displacement Monitoring Using Sentinel-1 Data: Integrating Distributed Scatterers (DS) Identified Using Two-Sample t-Test with Persistent Scatterers (PS).
Remote Sensing
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi.
(2018)
Persistent Scatterer Analysis Using Dual-Polarization Sentinel-1 Data: Contribution From VH Channel.
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Vitenskapelig artikkel
2017
-
Motagh, Mahdi;
Shamshiri, Roghayeh;
Haghshenas, Mahmud;
Wetzel, Hans-Ulrich;
Akbari, Bahman;
Nahavandchi, Hossein.
(2017)
Quantifying groundwater exploitation induced subsidence in the Rafsanjan plain, southeastern Iran, using InSAR time-series and in situ measurements.
Engineering Geology
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2017)
Seasonal variation analysis of Greenland ice mass time-series.
Acta Geodaetica et Geophysica Hungarica
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Haakonsen, Trond Arve;
Aas, Håvard.
(2017)
Accuracy investigation of UAV Photomapping.
Kart og Plan
Vitenskapelig artikkel
2016
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi.
(2016)
Deformation analysis of the Trondheim city from SAR Interferometry.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi;
Haghshenas, Mahmud.
(2016)
Multi-sensor InSAR analysis of surface displacement over coastal urban city of Trondheim.
Procedia Computer Science
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi.
(2016)
Deformation analysis of the Trondheim city from
SAR Interferometry
.
ESA SP
Vitenskapelig artikkel
2015
-
Nahavandchi, Hossein;
Joodaki, Gholamreza;
Schwartz, Vegar.
(2015)
GRACE-derived ice-mass loss spread over Greenland.
Journal of Geodetic Science
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Skogseth, Terje.
(2015)
Klimaovervåking med satellitter.
Byggeindustrien
Fagartikkel
2014
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2014)
Earth Mass Change Tracking Using GRACE Satellite Gravity Data.
Doktoravhandlinger ved NTNU (2014:34)
Doktorgradsavhandling
2013
-
Joodaki, Gholamreza;
Nahavandchi, Hossein;
Ghazavi, Kourosh.
(2013)
Steric sea level changes from ENVISAT and GRACE in the Nordic Seas.
ESA SP
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein;
Cheng, Kevin.
(2013)
Ocean Wave Measurement Using GPS Buoys.
Journal of Geodetic Science
Vitenskapelig artikkel
-
Borge, Aina;
Nahavandchi, Hossein.
(2013)
Geoid determination over Norway using global Earth gravity models.
NTNU
Mastergradsoppgave
-
Nahavandchi, Hossein;
Skjeset, Lars.
(2013)
Geoid-type surface determination using a gravimetric quasigeoid model and GNSS/leveling data- A case study in eastern Norway.
Kart og Plan
Vitenskapelig artikkel
2012
-
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2012)
Greenland ice-melt spread into Northwest Coast revealed by GRACE (GRACE data viser at issmeltingen på Grønland sprer seg til nordvestkysten).
Kart og Plan
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Mahdavipour, Hossein.
(2012)
Sammenligning av geoidens høyde utledet fra geopotensialmodellen EGM2008 med GPS/nivellementsdata i et testområde i Iran (Comparison of geoid heights from the EGM2008 geopotential model and GPS/levelling data in a study area in Iran).
Kart og Plan
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2012)
Mass loss of the Greenland ice sheet from GRACE time-variable gravity measurements.
Studia Geophysica et Geodaetica
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2012)
Mass balance and mass loss acceleration of the Greenland ice sheet (2002 – 2011) from GRACE gravity data.
Journal of Geodetic Science
Vitenskapelig artikkel
2011
-
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2011)
Mean Sea Surface and ocean circulation in North Atlantic and the Arctic Sea.
Journal of Geodetic Science
Vitenskapelig artikkel
2010
-
Skeset, Lars;
Nahavandchi, Hossein.
(2010)
Bestemmelse av høydereferansemodell ved bruk av gravimetrisk geoidemodell og GNSS/nivellementsdata.
NTNU
Mastergradsoppgave
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2010)
Greenland mass balance estimation from satellite gravity measurements.
ESA SP
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2010)
CORRELATION ANALYSIS OF MULTIPATH EFFECTS IN GPS-CODE AND CARRIER PHASE OBSERVATIONS.
Survey Review
Vitenskapelig artikkel
2009
-
Taraldsten Brunes, Morten;
Nahavandchi, Hossein.
(2009)
Beregning og analyse av relativ og absolutt GPS fasesentervariasjon.
NTNU
Mastergradsoppgave
-
Hervig, Lars;
Nahavandchi, Hossein.
(2009)
En analyse av GNSS tilgjenglighet og nøyaktighet i Norge ved bruk av GPS og Galileo.
NTNU
Mastergradsoppgave
-
Østerbø, Øystein Kvaal;
Nahavandchi, Hossein.
(2009)
Korrelasjonsanalyse av sanntids GNSS-data.
NTNU
Mastergradsoppgave
2008
-
Nahavandchi, Hossein;
Soltanpour, Ali.
(2008)
Local ionospheric modelling of GPS code and carrier phase observations.
Survey Review
Vitenskapelig artikkel
-
Omang, Ove Christian Dahl;
Hunegnaw, Addisu;
Solheim, Dag;
Lysaker, Dagny;
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2008)
Updated OCTAS geoid in the northern North Atlantic - OCTAS07.
International Association of Geodesy Symposia
Vitenskapelig artikkel
-
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2008)
Satellite Altimetry derived Mean Sea Surface and its error analysis over OCTAS study area. OCTAS-Ocean Circulation and Transport between north Atlantic and the Arctic Sea.
Doktoravhandlinger ved NTNU (2008:180)
Doktorgradsavhandling
-
Prebensen Korsnes, Andreas;
Nahavandchi, Hossein.
(2008)
Tilgjengelighet og korrelasjonsanalyse av GNSS-data.
Tapir NTNU
Mastergradsoppgave
2007
-
Evanger, Kim;
Nahavandchi, Hossein.
(2007)
Investigation of Applanix POS Post-Process Package (POSPac) for GPS/INS Positioning/Navigation system.
NTNU
Mastergradsoppgave
-
Vangen, Vibeke;
Nahavandchi, Hossein.
(2007)
Error Budget in Seabed Mapping.
NTNU
Mastergradsoppgave
-
Ghazavi, Kourosh;
Nahavandchi, Hossein;
Omang, Ove Christian Dahl;
Solheim, Dag;
Soltanpour, Ali;
Shum, C.K..
(2007)
The OCTAS07- North Atlantic/Arctic ocean mean sea surface model based on a wavelet adjustment of multiple satellite altimetry data.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Solheim, Dag;
Omang, Ove Christian Dahl;
Nahavandchi, Hossein;
Ghazavi, Kourosh;
Pettersen, Bjørn Ragnvald.
(2007)
Assessment and Validation of the geoid, MSS and MDT models in the OCTAS project.
Geophysical Research Abstracts
Sammendrag/abstract
-
Omang, Ove Christian Dahl;
Solheim, Dag;
Hunegnaw, Addisu;
Lysaker, Dagny;
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2007)
Updated OCTAS geoid – OCTAS07.
Geophysical Research Abstracts
Sammendrag/abstract
-
Ghazavi, Kourosh;
Nahavandchi, Hossein;
Omang, Ove Christian Dahl;
Solheim, Dag;
Soltanpour, Ali;
Shum, C.K..
(2007)
OCTAS with a focus on the importance of a high precision mean sea surface.
Geophysical Research Abstracts
Sammendrag/abstract
-
Ghazavi, Kourosh;
Nahavandchi, Hossein;
Omang, Ove Christian Dahl ;
Solheim, Dag;
Soltanpour, Ali;
Shum, C.K..
(2007)
The OCTAS06-North Atlantic/Arctic ocean mean sea surface model.
Geophysical Research Abstracts
Sammendrag/abstract
-
Solheim, Dag;
Omang, Ove Christian Dahl;
Hunegnaw, Addisu;
Soltanpour, Ali;
Drange, Helge;
Nahavandchi, Hossein.
(2007)
The OCTAS project, the interrelationship between the geoid, the mean sea surface and the mean dynamic topography.
Geophysical Research Abstracts
Sammendrag/abstract
-
Solheim, Dag;
Omang, Ove Christian Dahl;
Hunegnaw, Addisu;
Drange, Helge;
Johannessen, Johnny;
Nahavandchi, Hossein.
(2007)
The OCTAS poject, The geoid, the mean sea surface and the mean dynamic topography.
European Space Agency
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Ghazavi, Kourosh.
(2007)
Recovery of marine gravity anomalies from ERS1, ERS2 and ENVISAT satellite altimetry data for geoid computations over Norway.
Studia Geophysica et Geodaetica
Vitenskapelig artikkel
-
Omang, Ove Christian Dahl;
Solheim, Dag;
Hunegnaw, Addisu;
Lysaker, Dagny;
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2007)
Ocean Circulation and Transport Between North Atlantic and the Arctic Sea with a focus on the importance of a high accuracy geoid model.
General Command of Mapping
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Soltanpour, Ali.
(2007)
Different Gravimetric Geoid Models over Iran with and without Terrestrial Gravity Data.
General Command of Mapping
Vitenskapelig artikkel
-
Soltanpour, Ali;
Nahavandchi, Hossein.
(2007)
Geoid and Geoid-type Surface Determination- Improved Determination of Heights from Global Positioning System.
Tapir Akademisk Forlag
Doktoravhandlinger ved NTNU (24)
Doktorgradsavhandling
-
Omang, Ove Christian Dahl;
Solheim, Dag;
Hunegnaw, Addisu;
Lysaker, Dagny Iren;
Ghazavi, K;
Nahavandchi, Hossein.
(2007)
OCTAS with a focus on the importance of a high accuracy geoid.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2006
-
Soltanpour, Ali;
Nahavandchi, Hossein.
(2006)
A new high-resolution geoid for Iran with emphasise on different modification procedures and new GRACE geopotential model.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Featherstone, Will.
(2006)
Geoid-type surface determination using wavelet-based combination of gravimetric quasi/geoid and GPS-levelling data.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Ghazavi, Kourosh.
(2006)
Recovery of marine gravity anomaly from ERS2 and ENVISAT data and its contribution to the geoid of Norway.
Geophysical Research Abstracts
Sammendrag/abstract
-
Nahavandchi, Hossein.
(2006)
HIGH-RESOLUTION GEOID DETERMINATION- IRanian Gravimetric Geoid 2005 (IRGG05).
National Cartographic Center of Iran
Rapport
-
Nahavandchi, Hossein;
Soltanpour, Ali.
(2006)
Improved determination of heights using a conversion surface by combining gravimetric quasi-geoid/geoid and GPS-levelling height differences.
Studia Geophysica et Geodaetica
Vitenskapelig artikkel
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Featherstone, Will.
(2006)
The Use of Second-generation Wavelets to Combine a Gravimetric Quasigeoid Model with GPS-levelling Data.
Journal of Geodesy
Vitenskapelig artikkel
-
Nyrnes, Erik;
Nahavandchi, Hossein.
(2006)
Error Analyses and Quality Control of Wellbore Directional Surveys.
Tapir Akademisk Forlag
Tapir Akademisk Forlag
Doktorgradsavhandling
-
Fløisbonn, Håkon Solhaug;
Nahavandchi, Hossein.
(2006)
Time Series Analysis of Real Time GPS-data.
NTNU
Mastergradsoppgave
2005
-
Nyrnes, Erik;
Torkildsen, Torgeir;
Nahavandchi, Hossein.
(2005)
Detection of Gross Errors in Wellbore Directional Surveying for Petroleum Production with emphasis on Reliability Analyses.
Kart og Plan
Vitenskapelig artikkel
-
Haakonsen, Trond Arve;
Nahavandchi, Hossein;
Plag, Hans-Peter.
(2005)
Temporal and Spatial Analyses of Continuous GPS Observations.
NTNU
Doktorgradsavhandling
-
Pettersen, Øystein;
Nahavandchi, Hossein.
(2005)
Spektralanalyse av kontinuerlige GPS-målinger.
NTNU
Mastergradsoppgave
-
Eide, Trond Petter;
Nahavandchi, Hossein.
(2005)
Analyse og modellering av ionosfærisk feil ved permanente GPS stasjoner.
NTNU
Mastergradsoppgave
2004
-
Nahavandchi, Hossein.
(2004)
The Quest for a Precise Geoidal Height Model.
Kart og Plan
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2004)
The direct effect and downward continuation correction of atmospheric masses in gravimetric geoid determination.
Bollettino di Geodesia e Scienze Affini
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2004)
A new strategy for the atmospheric gravity effect in gravimetric geoid determination.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Soltanpour, Ali;
Nyrnes, Erik.
(2004)
A New Gravimetric Geoidal Height Model over Norway Computed by the Least-Squares Modification Parameters.
Springer Publishing Company
Annet
-
Huser, Helge;
Nahavandchi, Hossein.
(2004)
An Investigation to the GPS data processing using GAMIT/GLOBK and GIPSY-OASIS II Scientific software Package.
NTNU
Mastergradsoppgave
2003
-
Nahavandchi, Hossein.
(2003)
A Comparison of the classical and recent formulae of handling the effects of close and distant topographic masses in gravimetric geoid computations.
Newton's Bulletin
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2003)
Corrections to "Two different methods of geoidal height determinations using a spherical harmonic representation of the geopotential, topographic corrections and the height anomaly-geoidal height difference".
Journal of Geodesy
Errata
-
Nahavandchi, Hossein.
(2003)
Use of global geopotential models for comparison of gravimetric geoid estimators by the modification of Stoke's formula.
Bollettino di Geodesia e Scienze Affini
Vitenskapelig artikkel
2002
-
Nahavandchi, Hossein.
(2002)
Two different methods of geoidal height determinations using a spherical harmonic representation of the geopotential, topographic corrections and the height anomaly-geoidal height difference.
Journal of Geodesy
Vitenskapelig artikkel
2001
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Precise geoid determination over Sweden using the Stokes-Helmert method and improved topographic corrections.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Two different views of topographical and downward-continuation corrections in the Stokes-Helmert approach to geoid computation.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Two different views of topographical and downward-continuation corrections in the Stokes-Helmert approach to geoid computation.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Precise geoid determination over Sweden using the Stokes-Helmert method and improved topographic corrections.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2001)
Physical Geodesy.
Department of Geomatics
Kompendium
2000
-
Nahavandchi, Hossein.
(2000)
The direct topographical correction in gravimetric geoid determination by the Stokes-Helmert method.
Journal of Geodesy
Vitenskapelig artikkel
-
Sjöberg, Lars Erik;
Nahavandchi, Hossein.
(2000)
The atmospheric geoid effects in Stokes’ formula.
Geophysical Journal International
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2000)
Computation of mean free-air gravity anomalies by Bjerhammar's deterministic and collocation methods over Scandinavia.
Survey Review
Vitenskapelig artikkel
1999
-
Nahavandchi, Hossein.
(1999)
Geoid terrain correction to power H (super 5) of satellite derived geopotential models.
Bollettino di Geodesia e Scienze Affini
Vitenskapelig artikkel
-
Sjöberg, Lars Erik;
Nahavandchi, Hossein.
(1999)
On the indirect effect in the Stokes-Helmert method of geoid determination.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1999)
Terrain correction computations by spherical harmonics and integral formulas.
Physics and chemistry of the earth. Part A: Solid earth and geodesy
Vitenskapelig artikkel
1998
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(1998)
Unification of vertical datums by GPS and gravimetric geoid models using modified Stokes formula.
Marine Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(1998)
Terrain corrections to power H3 in gravimetric geoid determination.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1998)
On some methods of downward continuation of mean free-air gravity anomaly.
IGeS Bulletin
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1998)
Precise Gravimetric-GPS Geoid Determination with Improved Topographic Corrections Applid over Sweden.
Department of Geodesy and Photogrammetry, KTH
Doktorgradsavhandling
1997
-
Nahavandchi, Hossein.
(1997)
Terrain effects in geoid determination over Iran.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1997)
The Atmospheric Geoid effects over Iran.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1997)
Connection of vertical datums using geoid models.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
1996
-
Nahavandchi, Hossein.
(1996)
Determination of Spherical Harmonics coefficients by Integral Formula and Collocation method.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
1995
-
Nahavandchi, Hossein.
(1995)
External Gravity Potential of the Earth and the problem of spherical harmonics Convergency in Physical Geodesy.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
1994
-
Nahavandchi, Hossein.
(1994)
Compilation of 10' by 10' mean gravity anomalies in Iran.
K.N.Toosi University of Technology
Mastergradsoppgave
1993
-
Nahavandchi, Hossein.
(1993)
Geoid Determination with geometrical methods.
Scientific and Technical Journal of NGO
Vitenskapelig artikkel
Tidsskriftspublikasjoner
-
Rajabi, Mahmoud;
Hoseini, Mostafa;
Nahavandchi, Hossein;
Asgarimehr, Milad;
Semmling, Maximilian;
Ramatschi, Markus.
(2023)
Tidal harmonics retrieval using GNSS-R dual-frequency complex observations.
Journal of Geodesy
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Nahavandchi, Hossein.
(2022)
The potential of spaceborne GNSS reflectometry for detecting ocean surface currents.
Remote Sensing of Environment
Vitenskapelig artikkel
-
Safdari, Zohreh;
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2022)
Estimation of Groundwater Depletion in Iran’s Catchments Using Well Data.
Water
Vitenskapelig artikkel
-
Rajabi, Mahmoud;
Hoseini, Mostafa;
Nahavandchi, Hossein;
Semmling, Maximillian;
Ramatschi, Markus;
Goli, Mehdi.
(2021)
Polarimetric GNSS-R Sea Level Monitoring using I/Q Interference Patterns at Different Antenna Configurations and Carrier Frequencies.
IEEE Transactions on Geoscience and Remote Sensing
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Semmling, Maximilian;
Nahavandchi, Hossein;
Rennspiess, Erik;
Ramatschi, Markus;
Haas, Rüdiger.
(2021)
On the Response of Polarimetric GNSS-Reflectometry to Sea Surface Roughness.
IEEE Transactions on Geoscience and Remote Sensing
Vitenskapelig artikkel
-
Asgarimehr, Milad;
Hoseini, Mostafa;
Semmling, Maximilian;
Ramatschi, Markus;
Camps, Adriano;
Nahavandchi, Hossein.
(2021)
Remote Sensing of Precipitation Using Reflected
GNSS Signals: Response Analysis
of Polarimetric Observations.
IEEE Transactions on Geoscience and Remote Sensing
Vitenskapelig artikkel
-
Rajabi, Mahmoud;
Hoseini, Mostafa;
Nahavandchi, Hossein;
Semmling, Maximilian;
Ramaschi, Markus;
Goli, Mehdi.
(2021)
A Performance Assessment of Polarimetric GNSS-R Sea Level Monitoring in the Presence of Sea Surface Roughness.
IEEE International Geoscience and Remote Sensing Symposium proceedings
Vitenskapelig artikkel
-
Rajabi, Mahmoud;
Amiri-Simkooei, Alireza;
Nahavandchi, Hossein;
Nafisi, Vahab.
(2020)
Modeling and Prediction of Regular Ionospheric Variations and Deterministic Anomalies.
Remote Sensing
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Asgarimehr, Milad;
Zavorotny, valery;
Nahavandchi, Hossein;
Ruf, chris;
Wickert, Jens.
(2020)
First Evidence of Mesoscale Ocean Eddies Signature
in GNSS Reflectometry Measurements.
Remote Sensing
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Motagh, Mahdi;
Nahavandchi, Hossein;
Haghshenas, Mahmud;
Hoseini, Mostafa.
(2020)
Improving tropospheric corrections on large-scale Sentinel-1 interferogramsusing a machine learning approach for integration with GNSS-derived zenithtotal delay (ZTD).
Remote Sensing of Environment
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Alshawaf, Fadwa;
Nahavandchi, Hossein;
Dick, Galina;
Wickert, Jens.
(2020)
Towards a zero-difference approach for homogenizing GNSS tropospheric products.
GPS Solutions
Vitenskapelig artikkel
-
Rajabi, Mahmoud;
Nahavandchi, Hossein;
Hoseini, Mostafa.
(2020)
Evaluation of CYGNSS Observations for Flood Detection and Mapping during Sistan and Baluchestan Torrential Rain in 2020 .
Water
Vitenskapelig artikkel
-
Hoseini, Mostafa;
Asgarimehr, Milad;
Nahavandchi, Hossein;
Wickert, Jens.
(2019)
Spaceborne GNSS-R Observations of Mesoscale Ocean Eddies; Preliminary Results from Cygnss Mission.
IEEE International Geoscience and Remote Sensing Symposium proceedings
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi;
Andy, Hooper.
(2018)
Efficient Ground Surface Displacement Monitoring Using Sentinel-1 Data: Integrating Distributed Scatterers (DS) Identified Using Two-Sample t-Test with Persistent Scatterers (PS).
Remote Sensing
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi.
(2018)
Persistent Scatterer Analysis Using Dual-Polarization Sentinel-1 Data: Contribution From VH Channel.
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Vitenskapelig artikkel
-
Motagh, Mahdi;
Shamshiri, Roghayeh;
Haghshenas, Mahmud;
Wetzel, Hans-Ulrich;
Akbari, Bahman;
Nahavandchi, Hossein.
(2017)
Quantifying groundwater exploitation induced subsidence in the Rafsanjan plain, southeastern Iran, using InSAR time-series and in situ measurements.
Engineering Geology
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2017)
Seasonal variation analysis of Greenland ice mass time-series.
Acta Geodaetica et Geophysica Hungarica
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Haakonsen, Trond Arve;
Aas, Håvard.
(2017)
Accuracy investigation of UAV Photomapping.
Kart og Plan
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi;
Haghshenas, Mahmud.
(2016)
Multi-sensor InSAR analysis of surface displacement over coastal urban city of Trondheim.
Procedia Computer Science
Vitenskapelig artikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi.
(2016)
Deformation analysis of the Trondheim city from
SAR Interferometry
.
ESA SP
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Joodaki, Gholamreza;
Schwartz, Vegar.
(2015)
GRACE-derived ice-mass loss spread over Greenland.
Journal of Geodetic Science
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Skogseth, Terje.
(2015)
Klimaovervåking med satellitter.
Byggeindustrien
Fagartikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein;
Ghazavi, Kourosh.
(2013)
Steric sea level changes from ENVISAT and GRACE in the Nordic Seas.
ESA SP
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein;
Cheng, Kevin.
(2013)
Ocean Wave Measurement Using GPS Buoys.
Journal of Geodetic Science
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Skjeset, Lars.
(2013)
Geoid-type surface determination using a gravimetric quasigeoid model and GNSS/leveling data- A case study in eastern Norway.
Kart og Plan
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2012)
Greenland ice-melt spread into Northwest Coast revealed by GRACE (GRACE data viser at issmeltingen på Grønland sprer seg til nordvestkysten).
Kart og Plan
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Mahdavipour, Hossein.
(2012)
Sammenligning av geoidens høyde utledet fra geopotensialmodellen EGM2008 med GPS/nivellementsdata i et testområde i Iran (Comparison of geoid heights from the EGM2008 geopotential model and GPS/levelling data in a study area in Iran).
Kart og Plan
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2012)
Mass loss of the Greenland ice sheet from GRACE time-variable gravity measurements.
Studia Geophysica et Geodaetica
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2012)
Mass balance and mass loss acceleration of the Greenland ice sheet (2002 – 2011) from GRACE gravity data.
Journal of Geodetic Science
Vitenskapelig artikkel
-
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2011)
Mean Sea Surface and ocean circulation in North Atlantic and the Arctic Sea.
Journal of Geodetic Science
Vitenskapelig artikkel
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2010)
Greenland mass balance estimation from satellite gravity measurements.
ESA SP
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Joodaki, Gholamreza.
(2010)
CORRELATION ANALYSIS OF MULTIPATH EFFECTS IN GPS-CODE AND CARRIER PHASE OBSERVATIONS.
Survey Review
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Soltanpour, Ali.
(2008)
Local ionospheric modelling of GPS code and carrier phase observations.
Survey Review
Vitenskapelig artikkel
-
Omang, Ove Christian Dahl;
Hunegnaw, Addisu;
Solheim, Dag;
Lysaker, Dagny;
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2008)
Updated OCTAS geoid in the northern North Atlantic - OCTAS07.
International Association of Geodesy Symposia
Vitenskapelig artikkel
-
Ghazavi, Kourosh;
Nahavandchi, Hossein;
Omang, Ove Christian Dahl;
Solheim, Dag;
Soltanpour, Ali;
Shum, C.K..
(2007)
The OCTAS07- North Atlantic/Arctic ocean mean sea surface model based on a wavelet adjustment of multiple satellite altimetry data.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Solheim, Dag;
Omang, Ove Christian Dahl;
Nahavandchi, Hossein;
Ghazavi, Kourosh;
Pettersen, Bjørn Ragnvald.
(2007)
Assessment and Validation of the geoid, MSS and MDT models in the OCTAS project.
Geophysical Research Abstracts
Sammendrag/abstract
-
Omang, Ove Christian Dahl;
Solheim, Dag;
Hunegnaw, Addisu;
Lysaker, Dagny;
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2007)
Updated OCTAS geoid – OCTAS07.
Geophysical Research Abstracts
Sammendrag/abstract
-
Ghazavi, Kourosh;
Nahavandchi, Hossein;
Omang, Ove Christian Dahl;
Solheim, Dag;
Soltanpour, Ali;
Shum, C.K..
(2007)
OCTAS with a focus on the importance of a high precision mean sea surface.
Geophysical Research Abstracts
Sammendrag/abstract
-
Ghazavi, Kourosh;
Nahavandchi, Hossein;
Omang, Ove Christian Dahl ;
Solheim, Dag;
Soltanpour, Ali;
Shum, C.K..
(2007)
The OCTAS06-North Atlantic/Arctic ocean mean sea surface model.
Geophysical Research Abstracts
Sammendrag/abstract
-
Solheim, Dag;
Omang, Ove Christian Dahl;
Hunegnaw, Addisu;
Soltanpour, Ali;
Drange, Helge;
Nahavandchi, Hossein.
(2007)
The OCTAS project, the interrelationship between the geoid, the mean sea surface and the mean dynamic topography.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Ghazavi, Kourosh.
(2007)
Recovery of marine gravity anomalies from ERS1, ERS2 and ENVISAT satellite altimetry data for geoid computations over Norway.
Studia Geophysica et Geodaetica
Vitenskapelig artikkel
-
Omang, Ove Christian Dahl;
Solheim, Dag;
Hunegnaw, Addisu;
Lysaker, Dagny;
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2007)
Ocean Circulation and Transport Between North Atlantic and the Arctic Sea with a focus on the importance of a high accuracy geoid model.
General Command of Mapping
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Soltanpour, Ali.
(2007)
Different Gravimetric Geoid Models over Iran with and without Terrestrial Gravity Data.
General Command of Mapping
Vitenskapelig artikkel
-
Soltanpour, Ali;
Nahavandchi, Hossein.
(2006)
A new high-resolution geoid for Iran with emphasise on different modification procedures and new GRACE geopotential model.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Featherstone, Will.
(2006)
Geoid-type surface determination using wavelet-based combination of gravimetric quasi/geoid and GPS-levelling data.
Geophysical Research Abstracts
Sammendrag/abstract
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Ghazavi, Kourosh.
(2006)
Recovery of marine gravity anomaly from ERS2 and ENVISAT data and its contribution to the geoid of Norway.
Geophysical Research Abstracts
Sammendrag/abstract
-
Nahavandchi, Hossein;
Soltanpour, Ali.
(2006)
Improved determination of heights using a conversion surface by combining gravimetric quasi-geoid/geoid and GPS-levelling height differences.
Studia Geophysica et Geodaetica
Vitenskapelig artikkel
-
Soltanpour, Ali;
Nahavandchi, Hossein;
Featherstone, Will.
(2006)
The Use of Second-generation Wavelets to Combine a Gravimetric Quasigeoid Model with GPS-levelling Data.
Journal of Geodesy
Vitenskapelig artikkel
-
Nyrnes, Erik;
Torkildsen, Torgeir;
Nahavandchi, Hossein.
(2005)
Detection of Gross Errors in Wellbore Directional Surveying for Petroleum Production with emphasis on Reliability Analyses.
Kart og Plan
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2004)
The Quest for a Precise Geoidal Height Model.
Kart og Plan
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2004)
The direct effect and downward continuation correction of atmospheric masses in gravimetric geoid determination.
Bollettino di Geodesia e Scienze Affini
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2004)
A new strategy for the atmospheric gravity effect in gravimetric geoid determination.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2003)
A Comparison of the classical and recent formulae of handling the effects of close and distant topographic masses in gravimetric geoid computations.
Newton's Bulletin
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2003)
Corrections to "Two different methods of geoidal height determinations using a spherical harmonic representation of the geopotential, topographic corrections and the height anomaly-geoidal height difference".
Journal of Geodesy
Errata
-
Nahavandchi, Hossein.
(2003)
Use of global geopotential models for comparison of gravimetric geoid estimators by the modification of Stoke's formula.
Bollettino di Geodesia e Scienze Affini
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2002)
Two different methods of geoidal height determinations using a spherical harmonic representation of the geopotential, topographic corrections and the height anomaly-geoidal height difference.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Precise geoid determination over Sweden using the Stokes-Helmert method and improved topographic corrections.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Two different views of topographical and downward-continuation corrections in the Stokes-Helmert approach to geoid computation.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Two different views of topographical and downward-continuation corrections in the Stokes-Helmert approach to geoid computation.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(2001)
Precise geoid determination over Sweden using the Stokes-Helmert method and improved topographic corrections.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2000)
The direct topographical correction in gravimetric geoid determination by the Stokes-Helmert method.
Journal of Geodesy
Vitenskapelig artikkel
-
Sjöberg, Lars Erik;
Nahavandchi, Hossein.
(2000)
The atmospheric geoid effects in Stokes’ formula.
Geophysical Journal International
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(2000)
Computation of mean free-air gravity anomalies by Bjerhammar's deterministic and collocation methods over Scandinavia.
Survey Review
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1999)
Geoid terrain correction to power H (super 5) of satellite derived geopotential models.
Bollettino di Geodesia e Scienze Affini
Vitenskapelig artikkel
-
Sjöberg, Lars Erik;
Nahavandchi, Hossein.
(1999)
On the indirect effect in the Stokes-Helmert method of geoid determination.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1999)
Terrain correction computations by spherical harmonics and integral formulas.
Physics and chemistry of the earth. Part A: Solid earth and geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(1998)
Unification of vertical datums by GPS and gravimetric geoid models using modified Stokes formula.
Marine Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein;
Sjöberg, Lars Erik.
(1998)
Terrain corrections to power H3 in gravimetric geoid determination.
Journal of Geodesy
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1998)
On some methods of downward continuation of mean free-air gravity anomaly.
IGeS Bulletin
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1997)
Terrain effects in geoid determination over Iran.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1997)
The Atmospheric Geoid effects over Iran.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1997)
Connection of vertical datums using geoid models.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1996)
Determination of Spherical Harmonics coefficients by Integral Formula and Collocation method.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1995)
External Gravity Potential of the Earth and the problem of spherical harmonics Convergency in Physical Geodesy.
Scientific and Technical Quarterly Journal of NCC
Vitenskapelig artikkel
-
Nahavandchi, Hossein.
(1993)
Geoid Determination with geometrical methods.
Scientific and Technical Journal of NGO
Vitenskapelig artikkel
Del av bok/rapport
-
Safdari, Zohreh;
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2022)
A Technical Note on Least Squares
Mascon Fitting to GRACE Satellite Data
to Estimate Total Water Storage Changes
in the Middle East.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Shamshiri, Roghayeh;
Nahavandchi, Hossein;
Motagh, Mahdi.
(2016)
Deformation analysis of the Trondheim city from SAR Interferometry.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Solheim, Dag;
Omang, Ove Christian Dahl;
Hunegnaw, Addisu;
Drange, Helge;
Johannessen, Johnny;
Nahavandchi, Hossein.
(2007)
The OCTAS poject, The geoid, the mean sea surface and the mean dynamic topography.
European Space Agency
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Omang, Ove Christian Dahl;
Solheim, Dag;
Hunegnaw, Addisu;
Lysaker, Dagny Iren;
Ghazavi, K;
Nahavandchi, Hossein.
(2007)
OCTAS with a focus on the importance of a high accuracy geoid.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Nahavandchi, Hossein;
Soltanpour, Ali;
Nyrnes, Erik.
(2004)
A New Gravimetric Geoidal Height Model over Norway Computed by the Least-Squares Modification Parameters.
Springer Publishing Company
Annet
Rapport
-
Joodaki, Gholamreza;
Nahavandchi, Hossein.
(2014)
Earth Mass Change Tracking Using GRACE Satellite Gravity Data.
Doktoravhandlinger ved NTNU (2014:34)
Doktorgradsavhandling
-
Borge, Aina;
Nahavandchi, Hossein.
(2013)
Geoid determination over Norway using global Earth gravity models.
NTNU
Mastergradsoppgave
-
Skeset, Lars;
Nahavandchi, Hossein.
(2010)
Bestemmelse av høydereferansemodell ved bruk av gravimetrisk geoidemodell og GNSS/nivellementsdata.
NTNU
Mastergradsoppgave
-
Taraldsten Brunes, Morten;
Nahavandchi, Hossein.
(2009)
Beregning og analyse av relativ og absolutt GPS fasesentervariasjon.
NTNU
Mastergradsoppgave
-
Hervig, Lars;
Nahavandchi, Hossein.
(2009)
En analyse av GNSS tilgjenglighet og nøyaktighet i Norge ved bruk av GPS og Galileo.
NTNU
Mastergradsoppgave
-
Østerbø, Øystein Kvaal;
Nahavandchi, Hossein.
(2009)
Korrelasjonsanalyse av sanntids GNSS-data.
NTNU
Mastergradsoppgave
-
Ghazavi, Kourosh;
Nahavandchi, Hossein.
(2008)
Satellite Altimetry derived Mean Sea Surface and its error analysis over OCTAS study area. OCTAS-Ocean Circulation and Transport between north Atlantic and the Arctic Sea.
Doktoravhandlinger ved NTNU (2008:180)
Doktorgradsavhandling
-
Prebensen Korsnes, Andreas;
Nahavandchi, Hossein.
(2008)
Tilgjengelighet og korrelasjonsanalyse av GNSS-data.
Tapir NTNU
Mastergradsoppgave
-
Evanger, Kim;
Nahavandchi, Hossein.
(2007)
Investigation of Applanix POS Post-Process Package (POSPac) for GPS/INS Positioning/Navigation system.
NTNU
Mastergradsoppgave
-
Vangen, Vibeke;
Nahavandchi, Hossein.
(2007)
Error Budget in Seabed Mapping.
NTNU
Mastergradsoppgave
-
Soltanpour, Ali;
Nahavandchi, Hossein.
(2007)
Geoid and Geoid-type Surface Determination- Improved Determination of Heights from Global Positioning System.
Tapir Akademisk Forlag
Doktoravhandlinger ved NTNU (24)
Doktorgradsavhandling
-
Nahavandchi, Hossein.
(2006)
HIGH-RESOLUTION GEOID DETERMINATION- IRanian Gravimetric Geoid 2005 (IRGG05).
National Cartographic Center of Iran
Rapport
-
Nyrnes, Erik;
Nahavandchi, Hossein.
(2006)
Error Analyses and Quality Control of Wellbore Directional Surveys.
Tapir Akademisk Forlag
Tapir Akademisk Forlag
Doktorgradsavhandling
-
Fløisbonn, Håkon Solhaug;
Nahavandchi, Hossein.
(2006)
Time Series Analysis of Real Time GPS-data.
NTNU
Mastergradsoppgave
-
Haakonsen, Trond Arve;
Nahavandchi, Hossein;
Plag, Hans-Peter.
(2005)
Temporal and Spatial Analyses of Continuous GPS Observations.
NTNU
Doktorgradsavhandling
-
Pettersen, Øystein;
Nahavandchi, Hossein.
(2005)
Spektralanalyse av kontinuerlige GPS-målinger.
NTNU
Mastergradsoppgave
-
Eide, Trond Petter;
Nahavandchi, Hossein.
(2005)
Analyse og modellering av ionosfærisk feil ved permanente GPS stasjoner.
NTNU
Mastergradsoppgave
-
Huser, Helge;
Nahavandchi, Hossein.
(2004)
An Investigation to the GPS data processing using GAMIT/GLOBK and GIPSY-OASIS II Scientific software Package.
NTNU
Mastergradsoppgave
-
Nahavandchi, Hossein.
(2001)
Physical Geodesy.
Department of Geomatics
Kompendium
-
Nahavandchi, Hossein.
(1998)
Precise Gravimetric-GPS Geoid Determination with Improved Topographic Corrections Applid over Sweden.
Department of Geodesy and Photogrammetry, KTH
Doktorgradsavhandling
-
Nahavandchi, Hossein.
(1994)
Compilation of 10' by 10' mean gravity anomalies in Iran.
K.N.Toosi University of Technology
Mastergradsoppgave
Undervisning
Emner
- BA8203 - En integrert jordbasert metode for studium av havklima
- TBA4236 - Teoretisk geomatikk
- TBA4565 - Geomatikk, fordypningsemne
- BA8202 - Videregående fysikalsk geodesi
- TBA4245 - GPS og Geodesi
- BA8200 - Videregående feilteori og utjevningsregning
- TBA4231 - Anvendt geomatikk
- TBA4560 - Geomatikk, fordypningsprosjekt
- TBA4251 - Programmering i geomatikk
- BA8605 - Videregående global satellitt-posisjonering (GPS)
- TBA4925 - Geomatikk, masteroppgave
- BA8604 - Satellitt-gravimetri og - altimetri
Formidling
2024
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Faglig foredragNahavandchi, Hossein; Hoseini, Mostafa; Rajabi, Mahmoud. (2024) NTNU’s CubeSat initiative and projects. International Association of Geodesy IAG Academic presentation , Berlin 2024-01-15 - 2024-01-15
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PosterSemmling, Maximilian; Li, Weiqiang; Zus, Florian; Hoseini, Mostafa; Moreno, Mario; Nahavandchi, Hossein. (2024) Building a comprehensive picture of sea surface, troposphere and ionosphere contributions in precise GNSS reflectometry from space . The European Geosciences Union EGU General Assembly 2024 , Vienna 2024-04-14 - 2024-04-19
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Vitenskapelig foredragDielacher, Andreas; Moser-Moritsch, Michael; Hoermanseder, Walter; Semmling, Maximilian; Li, Weiqiang; Nahavandchi, Hossein. (2024) PRETTY – First experience from a 3U CubeSat In-Orbit Demonstrator for GNSS-Reflectometry under grazing angle geometry. The European Geosciences Union EGU General Assembly 2024 , Vienna 2024-04-14 - 2024-04-19
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Vitenskapelig foredragSemmling, Maximilian; Li, Weiqiang; Wickert, Jens; Cardellach, Estel; Dielacher, Andreas; Nahavandchi, Hossein. (2024) Coherent Reflectometry from Space: Sensitivity to Sea-Surface Height and Atmospheric Disturbance. IEEE International Conference on Electromagnetics in Advanced Applications , Lisbon 2024-09-02 - 2024-09-06
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Vitenskapelig foredragCardellach, Estel; Li, Weiqiang; Nahavandchi, Hossein; Semmling, Maximilian; Moreno, Mario; Hoque, Mainul. (2024) PRECISE GNSS-R ALTIMETRY WITH THE ESA PRETTY CUBESAT: INITIAL IN-ORBIT RESULTS. IEEE IEEE International Geoscience and Remote Sensing Symposium , Athens 2024-07-07 - 2024-07-12
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Vitenskapelig foredragSemmling, Maximilian; Moreno, Mario; Zus, Florian; Hoque, Mainul; Wickert, Jens; Nahavandchi, Hossein. (2024) Ionospheric impact on space-borne GNSS reflectometry: studying satellite and sounding rocket scenarios. The German Aerospace Center National Space Weather Workshop 2024 , Neustrelitz 2024-09-24 - 2024-09-26
2023
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Faglig foredragNahavandchi, Hossein; Hoseini, Mostafa; Rajabi, Mahmoud. (2023) Using GNSS reflected signals for study of Ocean and Ice parameters. Geoforum Academic presentation , Trondheim 2023-11-30 - 2023-11-30
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Faglig foredragMohamadi, Ardeshir; Nahavandchi, Hossein. (2023) Precise GNSS Positioning with Low-cost Receivers for Next-Gen Mobility. Geoforum Academic presentation , Trondheim 2023-11-30 - 2023-11-30
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Vitenskapelig foredragNahavandchi, Hossein; Cardellach, Estel; Semmling, Maximilian; Hoseini, Mostafa; Wickert, Jens; Fragner, Heinz. (2023) ESA PRETTY CubeSat mission for precise altimetric determination of water and ice surfaces at grazing incidence angles. IEEE IEEE GNSS+R 2023 , Boulder, Colorado 2023-05-25 - 2023-05-26
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Vitenskapelig foredragSemmling, Maximilian; Li, Weiqiang; Hoque, Mainul; Wickert, Jens; Cardellach, Estel; Nahavandchi, Hossein. (2023) PRETTY MISSION PREPARATIONS: STEPS TO FOSTER GRAZING-ANGLE REFLECTOMETRY. IEEE Geoscience and Remote Sensing Society (GRSS) IEEE IGARSS 2023 , Pasadena, California 2023-07-16 - 2023-07-21
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Vitenskapelig foredragMoreno, Mario; Semmling, Maximilian; Nahavandchi, Hossein; Wickert, Jens; Cardellach, Estel; Hoque, Mainul. (2023) Challenges for the PRETTY Satellite Mission: Characterizing Grazing Angle Ionospheric Effects in Space-borne GNSS Reflectometry . European Space Agency ESA-NRSCC GNSS-R , Noordwijk aan Zee 2023-10-09 - 2023-10-11
2022
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Vitenskapelig foredragMohamadi, Ardeshir; Nahavandchi, Hossein. (2022) High-accuracy GNSS positioning for urban mobility and optimal transport solutions. GeoForum GEOMATIKKDAGENE 2022 , Sundvolden 2022-03-29 - 2022-03-31
2021
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Vitenskapelig foredragRajabi, Mahmoud; Hoseini, Mostafa; Nahavandchi, Hossein; Semmling, Maximilian; Ramatschi, Markus; Goli, Mehdi. (2021) PERFORMANCE ASSESSMENT OF POLARIMETRIC GNSS-R SEA LEVEL MONITORING IN THE PRESENCE OF SEA SURFACE ROUGHNESS. IEEE IEEE IGARSS 2021 , Brussels 2021-07-12 - 2021-07-16
2019
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PosterHoseini, Mostafa; Nahavandchi, Hossein; Asgarimehr, Milad; Wickert, Jens. (2019) Impact of sea surface temperature on GNSS-R observations over mesoscale ocean eddies: preliminary results from CYGNSS. IEEE and IEEE GRRS IEEE GNSS+R 2019 , Benevento 2019-05-20 - 2019-05-22
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Vitenskapelig foredragShamshiri, Roghayeh; Haghshenas, Mahmud; Hoseini, Mostafa; Modiri, Sadegh; Nahavandchi, Hossein; Motagh, Mahdi. (2019) Large-scale Sentinel-1 InSAR analysis over Norway: Influence of atmospheric water vapour distribution. ESA ESA Living Planet Symposium , Milan 2019-05-13 - 2019-05-17
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PosterShamshiri, Roghayeh; Motagh, Mahdi; Nahavandchi, Hossein. (2019) A machine learning-based regression technique for prediction of tropospheric phase delay on large-scale Sentinel-1 InSAR time series. European Geosciences Union (EGU) EGU General Assembly , Vienna 2019-04-07 - 2019-04-12
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PosterHoseini, Mostafa; Semmling, Maximilian; Ramatschi, Markus; Nahavandchi, Hossein; Wickert, Jens. (2019) A POLARIMETRIC PROCESSOR FOR GNSS REFLECTOMETRY AND ITS PROSPECT FOR OCEAN ALTIMETRY AND SEA ICE REMOTE SENSING. European Space Agency ESA ARSI + KEO , Noordwijk 2019-11-11 - 2019-11-13
2018
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PosterShamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi; Hooper, Andy. (2018) A modified SqueeSAR approach for urban displacement monitoring with Sentinel-1 data. European Geosciences Union European Geosciences Union General Assembly 2018 , Viena 2018-04-08 - 2018-04-13
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Vitenskapelig foredragHoseini, Mostafa; Alshawaf, Fadwa; Dick, Galina; Wickert, Jens; Nahavandchi, Hossein. (2018) Analysis of GNSS atmospheric time series using subspace-based techniques for climate monitoring. International Association of Geodesy (IAG) IX Hotine-Marussi Symposium , Rome 2018-06-18 - 2018-06-22
2016
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Vitenskapelig foredragNahavandchi, Hossein; Shamshiri, Roghayeh. (2016) Infrastructure monitoring using SAR interferometry. GeoForum Geodesi-og hydrografidagene , Stavanger 2016-11-16 - 2016-11-17
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Vitenskapelig foredragShamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi; Haghshenas, Mahmud. (2016) Multi-sensor InSAR analysis of surface displacement over Trondheim. University of Trás-os-Montes e Alto Douro CENTERIS Conference- SARWatch , Porto 2016-10-05 - 2016-10-07
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Vitenskapelig foredragShamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi. (2016) Stability assessment of roads and railways in Trondheim by using TerraSAR-X. DLR German Aerospace Center TSX/TDX TerraSAR-X Science Team Meeting , Munich 2016-10-17 - 2016-10-20
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Vitenskapelig foredragNahavandchi, Hossein. (2016) Infrastructure monitoring using SAR radar satellite data. Iran Construction Engineering Organization Iran Construction Engineering Organization Professional Seminar , Rasht 2016-07-19 - 2016-08-02
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Faglig foredragNahavandchi, Hossein. (2016) Deformation analysis of urban areas using Interferometry SAR satellite data. Iran Construction Engineering Organization-Gilan Branch Iran Construction Engineering Organization workshop , Gilan 2016-07-09 - 2016-07-19
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PosterShamshiri, Roghayeh; Motagh, Mahdi; Nahavandchi, Hossein; Wetzel, Hans-Ulrich; Akbari, Bahman. (2016) Land subsidence monitoring in Rafsanjan plain, southeast Iran using multi-sensor InSAR data. Norges geologiske undersøkelse NGU-dagen , Trondheim 2016-02-04 - 2016-02-05
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Vitenskapelig foredragNahavandchi, Hossein. (2016) Coordinate Systems- The foundation needed for Earth-system monitoring . KN Toosi University of Technology The 1st Conference on Geospatial Information Technology (NCGIT) , Teheran 2016-01-18 - 2016-01-21
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PosterShamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi. (2016) Deformation Analysis of Trondheim city from SAR Interferometry. European Space Agency ESA Living planet symposium 2016 , Prague 2016-05-09 - 2016-05-13
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PosterHoseini, Mostafa; Asgarimehr, Milad; Nahavandchi, Hossein; Wickert, Jens. (2016) SPACEBORNE GNSS-R OBSERVATIONS OF MESOSCALE OCEAN EDDIES . IEEE Geoscience and Remote Sensing Society (GRSS) IEEE IGARSS 2019 Symposium , Yokohama 2016-07-28 - 2019-08-02
2014
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Vitenskapelig foredragNahavandchi, Hossein; Schwartz, Vegard; Joodaki, Gholamreza. (2014) GRACE- beregning av ismassereduksjon på Grønland. GeoForum Geomatikkdagene 2014 , Stjørdal 2014-04-01 - 2014-04-03
2013
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Vitenskapelig foredragNahavandchi, Hossein. (2013) Groundwater Level Estimation from GRACE Satellite Gravity Data. GeoForum og Statens Kartverk Geodesi- og hydrografidagene , Sundvolden 2013-11-13 - 2013-11-14
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Vitenskapelig foredragNahavandchi, Hossein. (2013) Are Global Gravity Models alone Accurate Enough for Height Determination using GPS?. GeoForum og Statens Kartverk Geodesi- og hydrografidagene , Sundvolden 2013-11-13 - 2013-11-14
2012
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PosterJoodaki, Gholamreza; Nahavandchi, Hossein; Ghazavi, Kourosh. (2012) Steric Sea Level Changes Using Altimetry and Gravimetry Satellites- A Case Study over Nordic Seas. European Space Agency 20 Years of Progress in Radar Altimetry , Venice 2012-09-24 - 2012-09-29
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Vitenskapelig foredragNahavandchi, Hossein. (2012) Ocean Wave Measurement (Wave Height, Period and Direction)Using Single GPS Buoy. Geoforum og Statens Kartverk Geodesi- og Hydrografidagene , Stavanger 2012-11-07 - 2012-11-08
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Vitenskapelig foredragNahavandchi, Hossein. (2012) Greenland Ice Mass Loss and Spread from GRACE Satellite Gravity Observations. Geoforum og Statens Kartverk Geodesi- og hydrografidagene , Stavanger 2012-11-07 - 2012-11-08
2010
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PosterJoodaki, Gholamreza; Nahavandchi, Hossein. (2010) Greenland mass balance estimation from satellite gravity measurements. European Space Agency The 2010 European Space Agency Living Planet Symposium , Bergen 2010-06-28 - 2010-07-02
2007
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Intervju
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PosterSoltanpour, Ali; Nahavandchi, Hossein. (2007) Geoid-type surface computation for the improved determination of heights from global positioning systems. International Union of Geodesy and Geophysics International Union of Geodesy and Geophysics (IUGG) XXIV 2007 , PERUGIA 2007-07-02 - 2007-07-13
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PosterOmang, Ove Christian Dahl; Solheim, Dag; Hunegnaw, Addisu; Lysaker, Dagny; Ghazavi, Kourosh; Nahavandchi, Hossein. (2007) Updated OCTAS geoid in the northern North Atlantic - OCTAS07. International Union of Geodesy and Geophysics International Union of Geodesy and Geophysics (IUGG) XXIV 2007 , PERUGIA 2007-07-02 - 2007-07-13
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PosterGhazavi, Kourosh; Nahavandchi, Hossein; Shum, C.K.; Yi, Yochan; Omang, Ove Christian Dahl; Solheim, Dag. (2007) Altimetric mean sea surface for the North Atlantic and the Arctic Sea. International Union of Geodesy and Geophysics International Union of Geodesy and Geophysics (IUGG) XXIV 2007 , PERUGIA 2007-07-02 - 2007-07-13
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PosterNahavandchi, Hossein; Shum, C.K.; Yi, Yochan; Omang, Ove Christian Dahl; Solheim, Dag. (2007) Ocean circulation with a focus on the importance of a high precision mean sea surface model. International Union of Geodesy and Geophysics International Union of Geodesy and Geophysics (IUGG) XXIV 2007 , PERUGIA 2007-07-02 - 2007-07-13
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PosterOmang, Ove Christian Dahl; Solheim, Dag; Hunegnaw, Addisu; Lysaker, Dagny Iren; Ghazavi, K; Nahavandchi, Hossein. (2007) Updated OCTAS geoid - OCTAS07. European Geosciences Union General Assembly 2007 , Wien 2007-04-15 - 2007-04-20
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PosterSolheim, Dag; Omang, Ove Christian Dahl; Hunegnaw, Addisu; Drange, Helge; Johannessen, J.A.; Nahavandchi, Hossein. (2007) The OCTAS project, the interrelationship between the geoid, the mean sea surface and the mean dynamic topography. European Geosciences Union, General Assembly 2007 , Wien 2007-04-15 - 2007-04-20
2006
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PosterSoltanpour, Ali; Nahavandchi, Hossein; Featherstone, Will. (2006) Geoid-type surface determination using wavelet-based combination of gravimetric quasi/geoid and GPS-levelling data. European Geosciences Union European Geosciences Union General Assembly 2006 , Vienna 2006-04-02 - 2006-04-07
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PosterNahavandchi, Hossein; Soltanpour, Ali. (2006) Different Geoidal Height Models over Iran with and Without Terrestrial Gravity Data. International association of Geodesy 1st international symposium of the international gravity field service, Gravity field of the Earth , Istanbul 2006-08-28 - 2006-09-01
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PosterSoltanpour, Ali; Nahavandchi, Hossein. (2006) How Second-Generation Wavelet Transform Can Improve the Results from Least- Squares Collocation- a Case Study over Norway. International Association of Geodesy 1st International Symposium of the International Gravity Field Service, Gravity Field of the Earth , Istanbul 2006-08-28 - 2006-09-01
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Vitenskapelig foredragSolheim, Dag; Omang, Ove Christian Dahl; Hunegnaw, Addisu; Drange, Helge; Johannessen, Johnny; Nahavandchi, Hossein. (2006) The OCTAS project, the geoid, the mean sea surface and and the mean dynamic topography. EUROPEAN SPACE AGENCY Third International GOCE User Workshop , Frascati 2006-11-06 - 2006-11-08
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Vitenskapelig foredragOmang, Ove Christian Dahl; Solheim, Dag; Hunegnaw, Addisu; Lysaker, Dagny; Ghazavi, Kourosh; Nahavandchi, Hossein. (2006) Ocean Circulation and Transport between the North Atlantic and Arctic Sea with a Focus on the Importance of a High Accuracy Geoid Model. International Association of Geodesy 1st international Symposium of the international gravity field service, Gravity field of the Earth , Istanbul 2006-08-28 - 2006-09-01
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Vitenskapelig foredragSolheim, Dag; Drange, Helge; Gidskehaug, Arne; Johannessen, Johnny; Nahavandchi, Hossein; Omang, Ove Christian Dahl. (2006) OCTAS: Ocean Circulation and Heat Transport between the North Atlantic and Arctic Sea. Nordic Geodetic Commission Nordic Geodetic Commission General Assembly , Copenhagen 2006-05-29 - 2006-06-02
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Vitenskapelig foredragSolheim, Dag; Drange, Helge; Johannessen, Johnny; Nahavandchi, Hossein; Omang, Ove Christian Dahl ; Pettersen, Bjørn Ragnvald. (2006) Ocean Circulation and Transport between the North Atlantic and Arctic Sea -- status report 2006. Nordic Geodetic Commission Nordic Geodetic Commission General Assembly , Copenhagen 2006-05-29 - 2006-06-02
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Vitenskapelig foredragSoltanpour, Ali; Nahavandchi, Hossein. (2006) Altimetry-derived marine gravity anomaly and its impact to the geoid of Norway. Nordic Geodetic Commission Nordic Geodetic Commission General Assembly , Copenhagen 2006-05-29 - 2006-06-02
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Vitenskapelig foredragSoltanpour, Ali; Nahavandchi, Hossein. (2006) Geoid and geoid-type surfaces determination in Norway. Nordic Geodetic Commission Nordic Geodetic Commission General Assembly , Copenhagen 2006-05-29 - 2006-06-02
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PosterSoltanpour, Ali; Nahavandchi, Hossein. (2006) A new high-resolution geoid for Iran with emphasise on different modification procedures and new GRACE geopotential model. European Geosciences Union European Geosciences Uion General Assembly 2006 , Vienna 2006-04-02 - 2006-04-07
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PosterSoltanpour, Ali; Nahavandchi, Hossein; Ghazavi, Kourosh. (2006) Recovery of marine gravity anomaly from ERS2 and ENVISAT data and its contribution to the geoid of Norway. European Geosciences Union European Geosciences Union General Assembly 2006 , Vienna 2006-04-02 - 2006-04-07
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Vitenskapelig foredragSolheim, Dag; Omang, Ove Christian Dahl; Hunegnaw, Addisu; Drange, Helge; Johannessen, J.A.; Nahavandchi, Hossein. (2006) The Octas project, the geoid, the mean sea surface, and the mean dynamic topography. 3rd International GOCE User Workshop , Roma 2006-07-01 - 2006-07-03
2005
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Vitenskapelig foredragNyrnes, Erik; Torkildsen, Torgeir; Nahavandchi, Hossein. (2005) Error Properties of Magnetic Directional Surveying Data . Society of Petrophysicists and Well Log Analysts (SPWLA) SPWLA 46th Annual Logging Symposium , New Orleans, Louisiana 2005-06-26 - 2005-06-29
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PosterSolheim, Dag; Drange, Helge; Johannessen, Johnny; Nahavandchi, Hossein; Omang, Ove Christian Dahl ; Pettersen, B.. (2005) Ocean Circulation and Transport between the North Atlantic and Arctic Sea-status report 2005. European Geosciences Union General Assembly- European Geosciences Union , Vienna 2005-04-24 - 2005-04-29
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Vitenskapelig foredragNyrnes, Erik; Torkildsen, Torgeir; Nahavandchi, Hossein. (2005) Analyses of the Accuracy and Reliability of Magnetic Directional Surveys. Society of Petroleum Engineers SPE/IADC Middle East Drilling Technology Conference and Exhibition , Dubai 2005-09-12 - 2005-09-14
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PosterSolheim, Dag; Drange, Helge; Ghazavi, K; Gidskehaug, Arne; Johannessen, J.A.; Lysaker, Dagny Iren. (2005) Ocean Circulation and TRansport between the North Atlantic and Arctic Sea - status report 2005. European Geosciences Union 2005 , Wien, Østerrike 2005-04-24 - 2005-04-29
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PosterSolheim, Dag; Drange, Helge; Ghazavi, K; Gidskehaug, Arne; Johannessen, J.A.; Lysaker, Dagny Iren. (2005) Ocean Circulation and Transport between the North Atlantic and Arctic Sea --- status report 2005. EGU Generaly Assembly , Vienna, Austria 2005-04-04 - 2005-04-08
2004
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PosterPlag, Hans-Peter; Plag, Hans-Peter; Drange, Helge; Drange, Helge; Gidskehaug, Arne; Gidskehaug, Arne. (2004) OCTAS: Ocean Circulation and Heat Transport Between the North Atlantic and Arctic Sea. Forskerkonferanse for KlimaProg, KlimaEffekter og Polar klimaforskning , Lillehammer 2004-01-07 - 2004-01-08
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Vitenskapelig foredragNahavandchi, Hossein; Soltanpour, Ali. (2004) An Attempt to Define a New Height-Datum in Norway. GeoForum-StatensKartverk Geodesi- og hydrografidagene 2004 , Sandnes 2004-11-04 - 2004-11-05
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PosterNahavandchi, Hossein; Haakonsen, Trond Arve; Plag, Hans-Peter. (2004) Principle component analysis of the Norwegian permanent GPS stations. European Geosciences Union (EGU) General Assembly- European Geosciences Union (EGU) , Nice 2004-04-25 - 2004-04-30
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PosterNahavandchi, Hossein; Haakonsen, Trond Arve. (2004) Correlation and spectral analysis of the Norwegian permanent GPS stations using a least-squares procedure. European Geosciences Union General Assembly- European Geosciences Union , Nice 2004-04-25 - 2004-04-30
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PosterSolheim, Dag; Drange, Helge; Johannessen, Johnny; Nahavandchi, Hossein; Omang, Ove Christian Dahl . (2004) Existing and new Mean Dynamic Topography, Mean Sea Surface and geiod models in the Northern North Atlantic. European Geosciences Union (EGU) General Assembly-European Geosciences Union (EGU) , Nice 2004-04-25 - 2004-04-30
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PosterNahavandchi, Hossein; Soltanpour, Ali. (2004) Adjustment of the Surface of the Gravimetric Geoidal Height Model between Constrained GPS-levelling Stations. International Association of Geodesy IAG International Symposium- Gravity, Geoid and Space Missions - GGSM2004 , porto 2004-08-30 - 2004-09-03
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PosterNahavandchi, Hossein; Soltanpour, Ali; Nyrnes, Erik. (2004) New Gravimetric Geoidal Height Model over Norway Computed by the Least-Squares Modification Parameters. International Association of Geodesy IAG International Symposium-Gravity, Geoid and Space Missions - GGSM2004 , Porto 2004-08-30 - 2004-09-03
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PosterSolheim, Dag; Drange, Helge; Johannessen, J.A.; Nahavandchi, Hossein; Omang, Ove Christian Dahl; Plag, Hans-Peter. (2004) Validation and Analysis of the Models for the Mean Dynamic Topography, the Mean Sea Surface Height and the Geoid in the Northern North Atlantic. Forskerkonferanse for KlimaProg, KlimaEffekter og Polar klimaforskning , Lillehammer 2004-01-08 -
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PosterNahavandchi, Hossein; Soltanpour, Ali. (2004) Impact of the New GRACE Global Geopotential Model to the Geoidal Height Modeling over Norway. International Association of Geodesy IAG International Symposium-Gravity, Geoid and Space Missions - GGSM2004 , Porto 2004-08-30 - 2004-09-03
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PosterSolheim, Dag; Drange, Helge; Johannessen, J.A.; Nahavandchi, Hossein; Omang, Ove Christian Dahl; Plag, Hans-Peter. (2004) Validation and Analysis of the Models for the Mean Dynamic Topography, the Mean Sea Surface Height and the Geoid in the Northern North Atlantic. Forskerkonferanse for KlimaProg, KlimaEffekter og Polar klimaforskning , Lillehammer 2004-01-07 - 2004-01-08
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PosterSolheim, Dag; Drange, Helge; Johannessen, J.A.; Nahavandchi, Hossein; Omang, Ove Christian Dahl; Plag, Hans-Peter. (2004) Existing and new synthetic Mean Dynamic Topography, Mean Sea Surface and geoid models in the Northern North Atlantic. 1st EGU General Assembly 2004 , Nice, France 2004-04-25 - 2004-04-30
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PosterPlag, Hans-Peter; Drange, Helge; Gidskehaug, Arne; Johannessen, J.A.; Nahavandchi, Hossein; Omang, Ove Christian Dahl. (2004) OCTAS: Ocean Circulation and Heat Transport Between the North Atlantic and Arctic Sea. Forskerkonferanse for KlimaProg, KlimaEffekter og Polar klimaforskning , Lillehammer 2004-01-07 - 2004-01-08
2003
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PosterNahavandchi, Hossein; Plag, Hans-Peter. (2003) Determination of the error spectrum of continuous GPS observations. EGS-AGU-EUG Joint Assembly , Nice 2003-04-11 -
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PosterNahavandchi, Hossein. (2003) Improved direct atmospheric correction in gravimetric geoid computations. EGS-AGU-EUG Joint Assembly Scientific , Nice, France 2003-04-11 -
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Vitenskapelig foredragPlag, Hans-Peter; Plag, Hans-Peter; Drange, Helge; Drange, Helge; Gidskehaug, Arne; Gidskehaug, Arne. (2003) Ocean Circulation and Heat Transport between the North Atlantic and Arctic Sea. The 23th General Assembly of the International Union of Geodesy and Geophysics , Japan, Sapporo 2003-06-30 - 2003-07-11
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Vitenskapelig foredragNahavandchi, Hossein. (2003) Evaluation of different methods for modification of Stokes�s integral. Geodesy Week 2003 , Germany, Hamburg 2003-09-19 -
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Vitenskapelig foredragNahavandchi, Hossein. (2003) How to compute a precise geoid and why it is important. Geodesi- og hydrografidagene 2003 , Hønefoss, Norway 2003-11-07 -
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Vitenskapelig foredragNahavandchi, Hossein. (2003) Temporal Charactristics of Multipath effects in GPS-Code and Carrier phase observations. Geodesi- og hydrografidagene 2003 , Hønefoss, Norway 2003-11-07 -
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Vitenskapelig foredragPlag, Hans-Peter; Drange, Helge; Gidskehaug, Arne; Johannessen, J.A.; Nahavandchi, Hossein; Omang, Ove Christian Dahl. (2003) Ocean Circulation and Heat Transport between the North Atlantic and Arctic Sea. The 23th General Assembly of the International Union of Geodesy and Geophysics , Japan, Sapporo 2003-06-30 - 2003-07-11
2002
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Vitenskapelig foredragNahavandchi, Hossein. (2002) Research Activities in Geodesy at Department of Geomatics, NTNU. Geodesi -og Hydrografidagene 2002 , Stavanger 2002-11-15 -
2000
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PosterNahavandchi, Hossein. (2000) A robust least-squares estimation technique for the combined adjustment of gravimetric geoid at GPS-leveling stations. European Geophysical Society General Assembly , NICE 2000-04-29 -
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Vitenskapelig foredragNahavandchi, Hossein. (2000) A new strategy for the direct terrain correction in Stokes-Helmert Scheme. European Geophysical Society General Assembly , NICE 2000-04-29 -
1999
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Vitenskapelig foredragNahavandchi, Hossein. (1999) Unification of Vertical Datums with Application to Asia and the Pacific. Second workshop on Regional Geodetic Network , Ho Chi Minh City, Vietnam 1999-07-13 -
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Vitenskapelig foredragNahavandchi, Hossein. (1999) Terrain correction computations with Sjoberg's and integral formulae. European Geophysical Society XXIII General Assembly , Nice, France 1998-04-24 -
1998
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Vitenskapelig foredragNahavandchi, Hossein. (1998) A comparison of classical and Sjoberg's approaches to terrain corrections in gravimetric geoid determination. European Geophysical Society XXIII Assembly , Nice, France 1998-04-24 -
1992
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Vitenskapelig foredragNahavandchi, Hossein. (1992) The use of Spot satellite imagery for the revision of maps in Iran. First International Conference on Surveying and Mapping , Tehran, Iran 1992-02-27 -