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Improved Multi-Channel Reconstruction Algorithm for High Resolution Wide Swath Imaging with Squint Stripmap SAR

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 246)

Abstract

The multi-channel reconstruction algorithm was proposed to reconstruct the down-sampled azimuth echo in the side-looking stripmap SAR with displaced phase center multiple azimuth beam antenna configuration. It is an effective algorithm for high resolution wide swath imaging. But when it is applied in squint mode directly, the de-focus phenomena appear in azimuth direction. The reason responsible for that lies in the non-zero doppler center frequency. In this paper, we improve the original multi-channel reconstruction algorithm, in which the aliased doppler center frequency is compensated in the preprocessing step and the reconstruction filter for each channel is adjusted. The analysis is given in details. The simulations verify the validity of the proposed method.

Keywords

Synthetic aperture radar Squint mode Multi-channel reconstruction algorithm 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.School of Electronic EngineeringUniversity of Electronic Science and Technology of China (UESTC)ChengduPeople’s Republic of China
  2. 2.Department of Physics and Information EngineeringHuaihua UniversityHunanPeople’s Republic of China

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