改进实孔径雷达的方位分辨力  

AN IMPROVEMENT OF THE AZIMUTH RESOLUTION OF REAL APERTURE IMAGING RADARS

作　　者：张卫华 丁义元[1] 杨建宇[1] 

机构地区：[1]电子科技大学电子工程系,成都610054

出　　处：《电子科技大学学报》1993年第6期569-574,共6页Journal of University of Electronic Science and Technology of China

基　　金：机电部预研基金

摘　　要：实孔径毫米波FMCW成像雷达系统中方位分辨力与距离分辨力不匹配,影响了成像质量。本文从分析“波束效应”的本质原因出发,提出了一种利用卷积反演—广义逆滤波法,对波束进行“伪压缩”是有效地提高成像雷达方位分辨力的方法。文中给出了对雷达实测数据作“伪压缩”处理的结果,可见处理后的方位分辨力提高约4倍。After the analysis of the essential reason why the effects of antenna beam upon azimuth resolution exist, the method of generalized inverse filtering for pseudo compressing the antenna beam by deconvolution is proposed in this paper, in order to improve the azimuth resolution mismatched with the high range resolution of the real aperture MMW FMCW imaging radar system. By computer simulation, it is shown that the azimuth resolution is improved in some degree by the pseudo compression of beams. As the result of processing a group of real data collected by the radar, the azimuth resolution is five times as good as that one unprocessed by this method.

关 键 词：雷达 方位分辨 天线 卷积反演 

分 类 号：TN957.6[电子电信—信号与信息处理]