Chirp雷达对高速运动目标有效相参积累的算法研究  

Effective coherent integration algorithm for high-speedmoving targets in Chirp radar

作　　者：朱永锋[1] 李为民[1] 陈远征[1] 付强[1] 

机构地区：[1]国防科技大学实验室,湖南长沙410073

出　　处：《系统工程与电子技术》2004年第10期1396-1399,1456,共5页Systems Engineering and Electronics

摘　　要：首先详细分析了包络走动对积累信噪比的影响因子,然后分别给出了最优相参积累和包络插值移位补偿相参积累两种积累途径,通过分析得出后者对包络走动补偿精度要求不敏感的结论,在低信噪比条件下能够实现较长时间有效相参积累。仿真结果显示,包络插值移位补偿相参积累法适合不同的应用需求,在-8dB和200个积累脉冲的条件下输出信噪比损失小于3dB。A detailed analysis is made on the factor by which envelope migration affects the coherent integration first, then two integration methods called the optimized coherent integration (OCI) and the coherent integration with interpolation and migration compensation (CIIMC) are proposed. Analysis indicates that CIIMC is insensitive to the compensation of the envelope migration and can achieve relatively long-time effective coherent integration when the input SNR is very low. Simulation results show that CIIMC can satisfy different applications; the output, SNR loss is less than 3 dB on condition of-8 dB input SNR and 200 integration pulses.r

关 键 词：雷达探测 相参积累 运动补偿 线性调频 

分 类 号：TN958[电子电信—信号与信息处理]