An improved imaging algorithm in frequency domain for bistatic SAR with stationary transmitter

被引：0
|
作者：
Xu H.-S. [1 ,2 ]
Song H.-J. [1 ]
Qi H.-M. [1 ]
Shang X.-Q. [1 ,2 ]
Zheng J.-B. [1 ,2 ]
机构：
[1] Institute of Electronics, Chinese Academy of Sciences
[2] Graduate University of Chinese Academy of Sciences
来源：
Yuhang Xuebao/Journal of Astronautics | 2011年 / 32卷 / 12期
关键词：
Bistatic SAR (BiSAR); Block; Imaging algorithm in frequency domain; Stationary transmitter;
D O I：
10.3873/j.issn.1000-1328.2011.12.015
中图分类号：
学科分类号：
摘要：
The signal model and the echo simulation approach of one-stationary bistatic SAR that the transmitter is fixed and the receiver works in three modes such as stripmap mode, spotlight mode and sliding spotlight mode are established first, then the imaging features are summarized. After that, an improved RMA using range sub-blocks in range Doppler domain is presented. To cancel the phenomenon of aberration in residual phase compensation, a range-scale interpolation is adopted without adding higher computational load in the proposed algorithm. The defects of block processing only once are demonstrated, and a twice-sub-blocks processing method is proposed to solve the limitation in the conventional algorithm. Finally, the validity of the algorithm and the feasibility of dealing with wide swath SAR data are verified by point targets simulation with a big size scene.
引用
收藏
页码：2567 / 2574
页数：7
相关论文
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