作者
Shuangxi Zhang, Yi Liao, Guangcai Sun, Mengdao Xing
发表日期
2013/4/14
研讨会论文
IET International Radar Conference 2013
页码范围
1-4
出版商
IET
简介
For a multi-channel in azimuth high-resolution and wide-swath SAR (HRWS) system, the range-variant channel mismatch in amplitude and phase deteriorates the coherence between different channels and the Doppler ambiguity suppression. In this paper, in order to improve the performance of multi-channel reconstruction in azimuth, the range-variant channel mismatch is compensated by coarse-compensation and fine-compensation. Then, the post-Doppler beam-forming algorithm is adopted to reconstruct the azimuth un-ambiguity signal. The airborne ScanSAR real data is utilized to demonstrate the performance of the channel-calibration method.
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