Topography-dependent motion compensation for repeat-pass interferometric SAR systems

被引：91

作者：

Prats, P ^{[1
]}

Reigber, A

Mallorqui, JJ

机构：

[1] Univ Politecn Catalunya, Dept Signal Theory & Commun, E-08034 Barcelona, Spain

[2] Univ Autonoma Barcelona, Dept Telecommun & Engn Syst, E-08193 Barcelona, Spain

[3] Tech Univ Berlin, Dept Comp Vis & Remote Sensing, D-10623 Berlin, Germany

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2005年 / 2卷 / 02期

关键词：

calibration; image registration; interferometry; motion compensation; repeat-pass interferometry; synthetic aperture radar (SAR);

D O I：

10.1109/LGRS.2005.846005

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

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.

引用

页码：206 / 210

页数：5

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