宽带雷达STRETCH处理系统失真补偿新方法  

A New Compensation Method of System Distortion in Wideband Radar STRETCH Processing

作　　者：林钱强[1] 张月[1] 陈曾平[1] 

机构地区：[1]国防科学技术大学ATR重点实验室,长沙410073

出　　处：《电子与信息学报》2013年第6期1477-1483,共7页Journal of Electronics & Information Technology

摘　　要：为了解决STRETCH处理的系统失真补偿复杂困难的问题,该文详细分析了STRETCH处理的系统失真以及导致失真移变的机理,提出了一种先去除回波失真移变特性,再进行失真补偿的算法,并给出该算法的实现步骤。实测数据验证结果表明,该算法能对STRETCH处理的系统失真进行有效的补偿,使脉冲压缩旁瓣抑制达到45 dB以上,且运算量小,实现简单。For the compensation of the system distortion in the wideband radar working with STRETCH processing, a new distortion compensation method based Oll time-variant property removal is proposed. The STRETCH processing distortion and its time-variant mechanism is expounded in detail, and a time-variant property removal algorithm is obtained. Joint time-variant property removal and distortion compensation method is established finally. The concrete implementation steps of this compensation method are also presented. Experimental results based on the real data, which prove the effectiveness and efficiency of the presented strategy, demonstrate that the proposed compensation method can compress echo pulse with low computation complexity, simple implementation and sidelobe suppression above 45 dB.

关 键 词：宽带雷达 线性调频 STRETCH处理 系统失真 失真补偿 

分 类 号：TN957[电子电信—信号与信息处理]