Chirp Scaling Imaging Algorithm of SAR in High Squint Mode Based on Range Walk Removal

Wu Yong; Song Hong-jun; Peng Jin

doi:10.3724/SP.J.1146.2009.00472

Volume 32 Issue 3

Aug. 2010

Turn off MathJax

Article Contents

Article Navigation > Journal of Electronics & Information Technology > 2010 > 32(3): 593-598

Wu Yong, Song Hong-jun, Peng Jin. Chirp Scaling Imaging Algorithm of SAR in High Squint Mode Based on Range Walk Removal[J]. Journal of Electronics & Information Technology, 2010, 32(3): 593-598. doi: 10.3724/SP.J.1146.2009.00472

Citation:

Wu Yong, Song Hong-jun, Peng Jin. Chirp Scaling Imaging Algorithm of SAR in High Squint Mode Based on Range Walk Removal[J]. Journal of Electronics & Information Technology, 2010, 32(3): 593-598. doi: 10.3724/SP.J.1146.2009.00472

Citation:

PDF( 334 KB)

Chirp Scaling Imaging Algorithm of SAR in High Squint Mode Based on Range Walk Removal

doi: 10.3724/SP.J.1146.2009.00472

Received Date: 2009-04-03
Rev Recd Date: 2009-09-11
Publish Date: 2010-03-19

Abstract

Abstract

SAR echo signal in high squint mode features large range walk and small range curvature. An improved CS imaging algorithm based on range-walk removal is proposed. First, range-walk is removed in time domain. Second, range curvature is corrected in frequency domain. Finally, geometry correction is used to correct geometric distortion. The coupling between azimuth and range is greatly reduced after range-walk removal. Therefore, it satisfies the imaging quality of SAR in high squint mode and the width of the scene swath is broadened as well. Simulation results illustrate that it satisfies the imaging quality of SAR in high squint mode and large scene swath.

FullText(HTML)

References(1)

References

黄源宝, 保铮. 大斜视角SAR 成像的一种新的二维可分离处理方法[J].电子与信息学报.2005, 27(1):1-5浏览[2]孙进平, 白霞, 毛士艺. 双基地合成孔径雷达的扩展ETF 成像算法[J]. 电子学报, 2007, 35(12): 2394-2398.Sun Jin-ping, Bai Xia, and Mao Shi-yi. A new extended ETFimaging algorithm for bistatic SAR. Acta Electronica Sinica,2007, 35(12): 2394-2398.[3]Davidson G W, Cumming I G, and Ito M R. A chirp scalingapproach for processing squint mode SAR data[J].IEEETranctions on Aerospace and Electronic Systems.1996, 32(1):121-133[4]Wang Kai-zhi and Liu Xing-zhao. Squint mode SAR imagingwith range-walk removal[C][J].Acoustics, Speech, and SignalProcessing. 2005(ICASSP'05), Philadelphia.2005, 4:1113-1116[5]王开志. 斜视条件下高分辨率合成孔径雷达成像[D]. [博士论文], 上海交通大学, 2007: 65-77.Wang Kai-zhi. High Resolution SAR Imaging TechniquesUnder Squint Mode[D]. [Ph.D. dissertation], Shanghai JiaoTong University, 2007: 65-77.[6]于明成, 许稼, 彭应宁, 等. SAR 原始信号的快速仿真[J]. 系统仿真学报, 2006, 18(2): 122-125.Yu Ming-cheng, Xu Jia, and Peng Ying-ning, et al.. Fastsimulation of SAR raw signal[J]. Journal of SystemSimulation, 2006, 18(2): 122-125.[7]黄立胜, 王贞松, 郑天垚. 基于FFT 的快速SAR 分布目标回波模拟算法[J]. 遥感学报, 2004, 8(2): 128-136.Huang Li-sheng, Wang Zhen-song, and Zheng Tian-yao. FastSAR distributed targets echo simulation algorithm based onFFT. Journal of Remote Sensing, 2004, 8(2): 128-136.[8]保铮, 邢孟道, 王彤. 雷达成像技术[M]. 北京: 电子工业出版社, 2005: 123-164.Bao Zheng, Xing Meng-dao, and Wang Tong. Radar ImageTechnology[M]. Beijing: Publishing House of ElectronicsIndustry, 2005: 123-164.[9]李悦丽, 梁佃农. 机载高波段SAR 大斜视角大场景成像算法研究[J].电子与信息学报.2008, 30(9):2046-2050浏览

Relative Articles

Supplements(0)

Cited By

Proportional views