基于包络插值移位补偿的高速运动目标的积累检测算法研究  

Detection Algorithm Research of High Velocity Moving Target Based on the Envelope Interpolation

作　　者：陈远征[1] 朱永锋[1] 赵宏钟[1] 付强[1] 

机构地区：[1]国防科技大学ATR实验室,湖南长沙410073

出　　处：《信号处理》2004年第4期387-390,共4页Journal of Signal Processing

摘　　要：本文针对Chirp雷达在低信噪比下对高速运动目标的有效积累检测问题,首先分析Chirp雷达运动目标的回波特性,指出包络走动是影响高速运动目标积累性能的主要因素,然后提出“基于包络插值补偿的相参积累”检测算法来解决这一问题。Monte Carlo仿真实验表明,在信噪比-8dB的条件下,采用该算法,对高速运动目标的检测性能可以达到在虚警概率为10-6时截获概率大于95%,证明了本算法的有效性。In this paper, the problem of the efficient coherent integrative detection of high velocity target with low SNR is investigated. Firstly, the characteristic of Chirp radar's return is analyzed. And then it is pointed out that the main factor that influences the performance of the coherent integration is the envelope's migration between range cells. Finally, a new detection algorithm, which is based on envelope interpolation, replacement and compensation, is proposed to resolve this problem. Monte Carlo test shows that, on the condition of -8dB SNR, using this algorithm, the high velocity moving targets can be detected, with the false alarming probability under 10-6 and the detection probability above 95%.

关 键 词：Chirp雷达 信号处理 信号检测 运动目标 积累检测算法 包络插值补偿 

分 类 号：TN957.51[电子电信—信号与信息处理]