CROSS-RANGE RESOLUTION OF SYNTHETIC APERTURE RADAR BASED ON DIVING MODEL  

作　　者：Sun Bing Zhou Yinqing Chen Jie 

机构地区：[1]School of Electronics and Information Engineering, Beihang University, Beijing 100191, China

出　　处：《Journal of Electronics(China)》2011年第1期71-76,共6页电子科学学刊（英文版）

基　　金：Supported by the Chinese Postdoctoral Science Foundation(No. 20080440300);the Fundamental Research Funds for the Central Universities

摘　　要：This paper concentrates on the cross-range resolution of Synthetic Aperture Radar(SAR) based on diving model.In comparison to the azimuth resolution,the cross-range resolution can manifest the two-dimensional resolution ability of the imaging sensor SAR correctly.The diving model of SAR is an extended model from the conventional stripmap model,and the cross-range resolution expression is deduced from the equivalent linear frequency modulation pulses' compression.This expression points out that only the cross-range velocity component of the horizontal velocity contributes to the cross-range resolution.Also the cross-range resolution expressions and the performance of the conventional stripmap operation,squint side-look operation and beam circular-scanning operation are discussed.The cross-range resolution expression based on diving model will provide more general and more accurate reference.This paper concentrates on the cross-range resolution of Synthetic Aperture Radar （SAR） based on diving model. In comparison to the azimuth resolution, the cross-range resolution can manifest the two-dimensional resolution ability of the imaging sensor SAR correctly. The diving model of SAR is an extended model from the conventional stripmap model, and the cross-range resolution expression is deduced from the equivalent linear frequency modulation pulses＇ compression. This expression points out that only the cross-range velocity component of the horizontal velocity contributes to the cross-range resolution. Also the cross-range resolution expressions and the performance of the conventional stripmap operation, squint side-look opera- tion and beam circular-scanning operation are discussed. The cross-range resolution expression based on diving model will provide more general and more accurate reference.

关 键 词：Synthetic Aperture Radar(SAR) Cross-range resolution Diving model Velocity component 

分 类 号：TN95[电子电信—信号与信息处理]