A Modified Fast Factorized Back Projection Algorithm for the Spotlight SAR Imaging

被引：0
|
作者：
Zuo, Shaoshan [1 ]
Sun, Guangcai [1 ]
Xing, Mengdao [1 ]
Chang, Wensheng [2 ]
机构：
[1] Xidian Univ, Natl Key Lab Radar Signal Pro, Xian, Peoples R China
[2] Fourteenth Res Inst, China Elect Technol Grp, Nanjing, Peoples R China
来源：
2015 IEEE 5TH ASIA-PACIFIC CONFERENCE ON SYNTHETIC APERTURE RADAR (APSAR) | 2015年
关键词：
SAR; spotlight; Fast Factorized Back Projection Algorithm (FFBPA); Geometric correction; Individual interpolation;
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 the Fast Factorized Back Projection Algorithm [1], the 2D interpolation in the image domain is an essential procedure to obtain a fine resolution image which is achieved point by point. The computational burden is intensive [2]. This paper presents a modified FFBPA for the spotlight SAR imaging. In this algorithm, the coarse sub-images obtained by back projecting the sub-aperture signals to the imaging grids in local polar coordinates are corrected by the shift in the range dimension and the rotation in the angle dimension. And then the sub-images are fused to synthesize the high resolution image. The method is convenient and efficient in practical operation.
引用
收藏
页码：756 / 759
页数：4
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