Fast Time Domain Approach for Bistatic Forward-Looking SAR Imaging Based on Subaperture Processing and Local Beamforming

被引：0
|
作者：
Xie, Hongtu [1 ,3 ,4 ]
Shi, Shaoying [1 ]
Li, Fuhai [3 ]
An, Daoxiang [4 ]
Xiao, Hui [1 ]
Xie, Chao [1 ]
Fang, Qunle [1 ]
Wang, Guangxue [1 ]
Wang, Libao [1 ]
Wang, Feng [1 ]
Wang, Guoqian [2 ]
Hang, Xiaotao [4 ]
Zhou, Zhimin [4 ]
机构：
[1] Air Force Early Warning Acad, Wuhan, Hubei, Peoples R China
[2] Hunan Inst Tradit Chinese Med, Affiliated Hosp, Changsha, Hunan, Peoples R China
[3] Hunan Univ, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China
[4] Natl Univ Def Technol, Coll Elect Sci & Engn, Changsha, Hunan, Peoples R China
来源：
2017 2ND INTERNATIONAL CONFERENCE ON FRONTIERS OF SENSORS TECHNOLOGIES (ICFST) | 2017年
基金：
中国国家自然科学基金;
关键词：
bistatic forward-looking synthetic aperture radar; fast factorized backprojection algorithm; local beamforming; subaperture processing; imaging; motion error; ALGORITHMS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fast time-domain approach called fast factorized backprojection (FFBP) algorithm based on the subaperture processing and local beamforming is presented for the bistatic forward-looking SAR (BFSAR) imaging. It not only precisely handles spatial-variance, serious range-azimuth coupling and complicated motion errors, but also greatly improves imaging efficiency compared with the backprojection (BP) algorithm. Besides, it requires the local beamforming from radar echoes as an intermediate stage in the slant-range plane instead of ground plane, which is accurately referenced to transmitter and receiver tracks. Finally, it analyzes the bistatic range error considering the motion errors to derive the requirements of selecting the size of subapertures and subimages. Experimental results show the validity of the proposed FFBP algorithm.
引用
收藏
页码：240 / 245
页数：6
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