Browsing by Author "Eldhuset, Knut"
Now showing items 1-12 of 12
-
Change Detection Using Time and Look Angle Series of Geocoded TanDEM-X Staring Spotlight Images
Eldhuset, Knut (2021-03-26)This article describes the analysis of changes in time and look angle series of TanDEM-X (TDX) and TerraSAR-X (TSX) staring spotlight images over the regions around Kjeller near Oslo in Norway and the town Nikel in Russia ... -
Combination of stereo SAR and InSAR for DEM generation using TanDEM-X spotlight data
Eldhuset, Knut (2017)The objective of this work is to generate accurate digital elevation models (DEMs) from synthetic aperture radar (SAR) interferograms using the spotlight and staring spotlight modes during the TanDEM-X (TDX) science phase. ... -
ERS tandem InSAR processing for DEM generation, glacier motion estimation and coherence analysis on Svalbard
Eldhuset, Knut; Andersen, Per Helge; Hauge, Svein; Isaksson, Elisabeth; Weydahl, Dan Johan (2003)This paper describes the unique InSAR (Interferometric Synthetic Aperture Radar) processing algorithms at Norwegian Defence Research Establishment (FFI) and how ERS (European Remote Sensing Satellite) tandem data are used ... -
Geolocation and Stereo Height estimation Using TerraSAR-X Spotlight Image Data
Eldhuset, Knut; Weydahl, Dan Johan (2011)We have studied the geographic position of several high-resolution spotlight TSX images by investigating the location of deployed radar corner reflectors. Results show that the geolocation accuracy is better than the ... -
High resolution spaceborne INSAR simulation with extended scenes
Eldhuset, Knut (2005)The Inverse–EETF4 (Extended Exact Transfer Function 4th order) is used to simulate raw data and a complete INSAR processing chain for high squint has been developed. Phase differences for a spaceborne INSAR geometry are ... -
High-resolution Spaceborne SAR Processing Using the Decomposed Transfer Function
Eldhuset, Knut (2017)In this paper a new analytic decomposed transfer function (DTF) for spaceborne SAR (Synthetic Aperture Radar) processing is calculated using the stationary phase approximation and Taylor’s series expansion. The DTF copes ... -
Høyoppløsnings SAR satellittbilder tatt over fjellpartier ved Bjerkvik i Nord-Norge
Weydahl, Dan Johan; Eldhuset, Knut (2011-07-04)Vi har brukt høyoppløsnings Radarsat-2 og COSMO-SkyMed syntetisk aperture radar satellittbilder (SAR) tatt i april 2010 for å evaluere fremkommelighet og noen utvalgte særtrekk ved fjellterrenget øst for Bjerkvik i ... -
Improving ship detection by using polarimetric decompositions
Hannevik, Tonje Nanette; Eldhuset, Knut; Olsen, Richard (2015-10-12)Norway’s large ocean areas require efficient methods to monitor vessels. Radar satellites in orbit today offer dual- or quad-polarised data, which ease the task of detecting vessels in a SAR (Synthetic Aperture Radar) ... -
Polarimetric scattering calculation based on Maxwells equations for very high resolution SAR
Eldhuset, Knut (2004)A method for raw signal generation for extended SAR (Synthetic Aperture Radar) scenes with very high resolution is described. Such a simulator shall handle resolution better than 30 cm, squinted geometry, elliptical orbit ... -
Spaceborne Bistatic SAR Processing Using the EETF4 Algorithm
Eldhuset, Knut (2009)In this letter, the fourth-order extended exact transfer function (EETF4) is adapted for spaceborne bistatic synthetic aperture radar (SAR) processing. The problems with high squint and large bistatic Doppler centroid ... -
Using stereo SAR and InSAR by combining the COSMO-SkyMed and the TanDEM-X mission satellites for estimation of absolute height
Eldhuset, Knut; Weydahl, Dan Johan (2013)The objective of this work is to estimate absolute height in synthetic aperture radar (SAR) interferograms. Since height in interferograms is relative, we use stereo SAR with several satellites to achieve absolute height ... -
Using the Pauli Scattering Mechanisms for Analysis of Polarimetric SAR Images from RADARSAT Constellation and TanDEM-X Missions
Eldhuset, Knut (2022-07-13)This article describes techniques for extraction of information in polarimetric images from RADARSAT constellation mission (RCM) and TanDEM-X (TDX) and TerraSAR-X (TSX) satellites. Using the boundary conditions of Maxwell's ...