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      Imaging Algorithm for Bistatic SAR Based on GNSS Signal

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          Abstract

          In this paper imaging processing method for Bistatic Synthetic Aperture Radar (BiSAR) utilizing navigation satellite is investigated. Considering the special problems of using Global Navigation Satellite System (GNSS) signal to form SAR image, direct signal is used to estimate range migration parameters and range migration is corrected in azimuth time domain. Doppler sensitivity of phase-coded signal was solved by Doppler compensation. Through fitting the Doppler phase history with high-order polynomial, Doppler phase history is accurately approximated and azimuth compression is implemented by de-chirp processing. Through simulation and experimental data processing, the proposed method is verified.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 March 2013
          : 2
          : 1
          : 39-45
          Affiliations
          [1 ] School of Information and Electronics, Beijing Institute of Technology
          Article
          a2d3fea0f0724020ac975e10ec662d59

          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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