A Hybrid Synthetic Aperture Radar Autofocus Approach Based on FRFT and PGA

被引：0
|
作者：
Xia, Bai [1 ]
Wang Dalong [1 ]
Juan, Zhao [1 ]
机构：
[1] Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China
来源：
PROCEEDINGS OF 2012 IEEE 11TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING (ICSP) VOLS 1-3 | 2012年
关键词：
synthetic aperture radar (SAR); autofocus; fractional Fourier transform (FRFT); phase gradient autofocus (PGA); ERRORS;
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：
In order to obtain high-resolution images, autofocus are widely used in Synthetic Aperture Radar (SAR) imaging. In this paper, a hybrid SAR autofocus approach is proposed, which estimates the quadratic phase error by using the fractional Fourier transform (FRFT) and the residual phase error by the phase gradient autofocus (PGA). The proposed approach combines the parametric and non-parametric autofocus techniques and its performance is superior to that of the PGA alone. Experimental results of simulated and real data demonstrate the validity of this hybrid approach.
引用
收藏
页码：1940 / 1943
页数：4
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