Improved SPECAN algorithm based on Doppler rate equalization

科研成果: 书/报告/会议事项章节会议稿件同行评审

4 引用 (Scopus)

摘要

The spectral analysis (SPECAN) algorithm is efficient and always used for synthetic aperture radar (SAR) data processing. But the azimuth dependence of Doppler rate is neglected in SPECAN algorithm, which results in the defocusing of targets away from the scene center. In order to solve this problem, an improved SPECAN algorithm is proposed. Considering the fact that the region of support in the azimuth frequency domain is different for targets in the same range gate, the algorithm equalizes the Doppler rate by nonlinear chirp scaling (NCS) in the azimuth frequency domain. Moreover, a modified map drift (MD) autofocus method is given to estimate the Doppler rate and its dependence. Finally, the effectiveness of the proposed algorithm is verified by real SAR data.

源语言英语
主期刊名IET Conference Publications
出版商Institution of Engineering and Technology
版本CP677
ISBN(印刷版)9781785610387
DOI
出版状态已出版 - 2015
活动IET International Radar Conference 2015 - Hangzhou, 中国
期限: 14 10月 201516 10月 2015

出版系列

姓名IET Conference Publications
编号CP677
2015

会议

会议IET International Radar Conference 2015
国家/地区中国
Hangzhou
时期14/10/1516/10/15

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