机载环扫成像雷达数据处理方法研究  

Study on the Data Processing Methods for Airborne Circular Scanning Imaging Radar

作　　者：李天池[1] 周荫清[2] 蔡世学[1] 李春生[2] 

机构地区：[1]中国航天科工集团公司,北京100854 [2]北京航空航天大学,北京100083

出　　处：《系统工程与电子技术》2002年第7期1-3,共3页Systems Engineering and Electronics

摘　　要：经典的聚焦式合成孔径和非聚焦式合成孔径数据处理方法主要用于星载或机载侧视成像 ,而环形扫描成像是一种特殊的成像方式 ,不能直接利用经典的成像处理算法。为了解决环形扫描高分辨率成像问题 ,概述了环扫成像雷达的工作方式 ,介绍了用聚焦式合成孔径和非聚焦式合成孔径提高方位分辨率的 3种实现方法。通过仿真验证了这 3种方法的有效性。该方法也可用于非环扫成像雷达系统。The classical focused and unfocused synthetic aperture methods are used for spaceborne imaging radar and airborne imaging radar. Circular scanning imaging radar has its unique characteristics, so classical image processing technology can not be directly used for circular scanning imaging radar data. This paper describes the opearating mode of circular scanning imaging radar. Three focused and unfocused synthetic aperture methods are presented to improve the azimuth resolution. Results of simulation show that these three methods are effective. The techniques developed in this paper can also be easily applied to noncircular scanning imaging systems.

关 键 词：环扫雷达 合成孔径雷达 图像处理 机载雷达 数据处理 

分 类 号：TN957[电子电信—信号与信息处理] TN959.73[电子电信—信息与通信工程]