作者
Sheng Zhang, Fang Zhou, Guang-Cai Sun, Xiang-Gen Xia, Meng-Dao Xing, Zheng Bao
发表日期
2016/6/2
期刊
IEEE Transactions on Geoscience and Remote Sensing
卷号
54
期号
9
页码范围
5564-5577
出版商
IEEE
简介
In this paper, for a multichannel synthetic aperture radar-ground moving target indication (SAR-GMTI) system, a new high-accuracy focusing and relocating method using instantaneous interferometry, i.e., carrying out interferometry operation in the azimuth time domain before focusing, is proposed. One of the key steps of this method is to perform instantaneous interferometry to get accurate equivalent cross-track velocity (ECV) estimation for cross-track motion compensation. After that, the signal from a moving target is concentrated in range, and along-track motion compensation becomes convenient. Motion compensation transforms a moving target into a stationary one; thus, the conventional SAR imaging algorithm can be applied to focus the moving target. Finally, a strategy for accurately relocating a moving target is presented. The processing results of simulated and measured data illustrate the effectiveness of …
引用总数
20172018201920202021202212131
学术搜索中的文章
S Zhang, F Zhou, GC Sun, XG Xia, MD Xing, Z Bao - IEEE Transactions on Geoscience and Remote …, 2016