Ground moving target imaging based on 2-D velocity search in high resolution SAR

Zhirui Wang*, Xiang Gen Xia, Jia Xu, Zuzhen Huang, Xudong Zhang

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

9 引用 (Scopus)

摘要

A novel ground moving target imaging algorithm based on 2-D velocity search is proposed in high resolution synthetic aperture radar. In the range-Doppler domain, a range velocity with low accuracy is obtained via the response length along the range direction of the target's range migration. Then, an accurate range velocity is determined in the velocity search for the best range migration correction. As to the azimuth velocity, it is roughly acquired based on the road slope extracted from a SAR image. Next, an accurate azimuth velocity is searched to match the Doppler rate of the moving target in order to realize the azimuth focusing, which is measured by the contrast of target imaging result. After the 2-D velocity search, the range defocus and azimuth defocus of a moving target is eliminated, and the final focused imaging is fulfilled. Compared with some existing imaging approaches, the proposed algorithm solves the problem of Doppler spectrum split and has a relatively low computation burden. Finally, some numerical experiments are provided to demonstrate the effectiveness of the proposed algorithm.

源语言英语
主期刊名2017 IEEE Radar Conference, RadarConf 2017
出版商Institute of Electrical and Electronics Engineers Inc.
68-72
页数5
ISBN(电子版)9781467388238
DOI
出版状态已出版 - 7 6月 2017
已对外发布
活动2017 IEEE Radar Conference, RadarConf 2017 - Seattle, 美国
期限: 8 5月 201712 5月 2017

出版系列

姓名2017 IEEE Radar Conference, RadarConf 2017

会议

会议2017 IEEE Radar Conference, RadarConf 2017
国家/地区美国
Seattle
时期8/05/1712/05/17

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