Design and Implementation of Real-time High Squint Spotlight SAR Imaging Processor

被引：0
|
作者：
Sun Jinping [1 ]
Wang Jun [1 ]
Hong Wen [2 ]
Mao Shiyi [1 ]
机构：
[1] Beihang Univ, Sch Elect & Informat Engn, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Inst Elect, Natl Key Lab MW Imaging Technol, Beijing 100080, Peoples R China
来源：
CHINESE JOURNAL OF ELECTRONICS | 2010年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Radar; Synthetic aperture radar (SAR); High squint mode; Imaging algorithm; Real-time processor; CHIRP SCALING APPROACH; ALGORITHM;
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：
For high squint mode spotlight Synthetic aperture radar (SAR) system without dechirp-on-receive function, a new imaging algorithm and the real-time processor implementation are presented. In this algorithm, high squint mode imaging processing is treated as broadside mode processing with special motion compensation. After the fast time delay correction and the phase compensation to echo data in azimuth time domain, conventional range Doppler method for broadside mode is applied to accomplish range curvature correction. Then, azimuth compression is achieved by azimuth scaling and Spectrum analysis (SPECAN) with non-uniform interpolation. Based on this algorithm, a practical real-time imaging processor is introduced. The effectiveness of the algorithm and the real-time processor is validated by point target simulations and real-time imaging result of real raw data.
引用
收藏
页码：563 / 568
页数：6
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