DBS成像中距离走动的校正方法  

Correction method of range walk in DBS imaging

作　　者：王堃 罗海坤[1] 沈大立 王浩丞 Wang Kun;Luo Haikun;Shen Dali;Wang Haocheng(The 29th Research Institute of CETC,Chengdu 610036,Sichuan,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《航天电子对抗》2018年第6期34-37,共4页Aerospace Electronic Warfare

摘　　要：针对DBS成像中的跨距离单元走动问题,提出了一种基于Keystone变换校正距离走动的DBS成像算法。该算法直接对雷达回波数据进行线性变换,可在雷达平台运动参数、视角等信息未知的前提下准确校正多目标场景中的距离走动量,实现方位维的相干积累,从而提高方位分辨率。理论分析及仿真结果验证了该算法的有效性。The DBS imaging algorithms is proposed based on Keystone transform to the problem of range walk.By doing linear transformation to the radar echo data directly,the algorithm corrects the range walk of multi-objectives accurately without the information of radar platform motion parameters and view angle,which can improve the azimuth resolution after doing coherent integration in azimuth dimensional Theoretical analysis and simulation results confirm the validity of the algorithm.

关 键 词：KEYSTONE变换 距离走动校正 多普勒波束锐化(DBS) 

分 类 号：TN95[电子电信—信号与信息处理]