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      Performance Analysis of Flat Surface Assumption and Residual Motion Errors on Airborne Repeat-pass InSAR

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          Abstract

          When applying to the airborne repeat-pass Interferometric Synthetic Aperture Radar (InSAR), which has long synthetic aperture and large azimuth-dependent errors, the surface assumption used to simply the time-domain algorithm model and the residual motion errors due to the precision of the navigation system will affect the imaging result and the interferometric measurement. This paper analyzes the altitude errors introduced by the surface assumption and the residual motion errors due to the precision of the navigation system. We deduce the range errors model during the single pass and analyze the effects of these errors on the plane location, interferometric phase and DEM precision. Then the accuracy of the theoretical deduction is verified by simulation and real data. The research provides theoretical bases for the system design and signal processing of airborne repeat-pass InSAR.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 September 2013
          : 2
          : 3
          : 334-347
          Affiliations
          [1 ] Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Chinese Academy of Sciences
          Article
          4a68a82936e64cde85d027e02d847ad7
          10.3724/SP.J.1300.2013.13013

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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