去斜聚束式SAR方位模糊度分析及仿真  

Azimuth Ambiguity Analysis of Deramping Spotlight Mode Synthetic Aperture Radar

作　　者：孔德亮[1] 宋红军[1] 朱敏慧[1] 

机构地区：[1]中国科学院电子学研究所

出　　处：《测试技术学报》2007年第4期341-345,共5页Journal of Test and Measurement Technology

摘　　要：方位向模糊度是衡量其成像质量的一个重要指标.而传统的条带模式SAR方位模糊度计算方法对于聚束成像模式来说并不适用.通过分析方位模糊度的来源及聚束工作模式下回波信号的特点,定义了聚束模式SAR的方位模糊度函数,并针对星载去斜条件讨论了方位模糊度函数的变化,采用实际的卫星和雷达参数的仿真结果为系统设计提供了可靠的理论依据.The azimuth ambiguity is one of the most important characters to scale the image quality. But the traditional method for analyzing the azimuth ambiguity in strip-map mode SARs does not match the situation in the spotlight mode. This paper circumscribes a function to describe the azimuth ambiguity of spotlight SAR through analyzing the origins of the azimuth ambiguity and the echo signal characteristics. Then focusing on the space-borne deramping spotlight SAR, the further analysis is made. The simulation satellite and radar parameters provides are liable, the oretical basis for the system design.

关 键 词：合成孔径雷达(SAR) 聚柬模式 去斜 方位模糊 

分 类 号：TN919[电子电信—通信与信息系统]