方位数字波束形成SAR系统的性能分析  

Performance Analysis for SAR System Based on Digital Beamforming in Azimuth

作　　者：吴志刚[1] 刘光炎[1] 

机构地区：[1]南京电子技术研究所,南京210013

出　　处：《中国电子科学研究院学报》2008年第6期644-647,共4页Journal of China Academy of Electronics and Information Technology

摘　　要：讨论了数字波束形成(DBF,digital beamforming)技术在星载合成孔径雷达(SAR,syntheticaperture radar)系统中的应用。详细讨论了天线尺寸,方位分辨率,脉冲重复频率等系统参数,分析了数字波束形成SAR系统的性能,并与常规SAR系统的这些参数做了比较。分析表明,在SAR系统接收端应用数字波束形成技术可以在实现高方位分辨率的同时展宽测绘带。The application of the digital beamforming technique in space-borne Synthetic Aperture Radar system is discussed. The digital beamforming SAR system＇s performance parameters such as antenna dimension, azimuth resolution, and pulse repetition frequency are analyzed and compared with those of the conventional SAR system. It is concluded that, by applying digital beamforming technique in its receiving terminal, the SAR system can achieve both high azimuth resolution and wide swath.

关 键 词：数字波束形成 星载SAR 宽测绘带 距离模糊 

分 类 号：TN958[电子电信—信号与信息处理]