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Topography dependent motion compensation for repeat-pass interferometric SAR systems
Prats Iraola, Pau; Reigber, Andreas; Mallorquí Franquet, Jordi Joan
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
This letter presents a new motion compensation algorithm to process airborne interferometric repeat-pass synthetic aperture radar (SAR) data. It accommodates topography variations during SAR data processing, using an external digital elevation model. The proposed approach avoids phase artifacts, azimuth coregistration errors, and impulse response degradation, which usually appear due to the assumption of a constant reference height during motion compensation. It accurately modifies phase history of all targets before azimuth compression, resulting in an enhanced image quality. Airborne L-band repeat-pass interferometric data of the German Aerospace Center experimental airborne SAR (E-SAR) is used to validate the algorithm.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
Boundary layer (Meteorology)
Image processing
Radar Equipment and supplies
Remote sensing
German Aerospace Center E-SAR
Airborne SAR
Azimuth coregistration errors
Synthetic aperture radar
Capa límit (Meteorologia)
Imatge -- Processament
Sensors remots

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