小时间带宽积线性调频信号的脉冲压缩研究  

A Study on the Behavior of Pulse Compression for Small Time-bandwidth Product LFM Signals

作　　者：夏德平[1] 张良[1] 孟祥东[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2014年第3期40-42,48,共4页Modern Radar

摘　　要：脉冲压缩技术已非常成熟,并广泛应用到雷达系统中,文中不作全面阐述,仅对小时宽带宽积线性调频信号的脉压旁瓣抑制性能进行研究。在综合考虑脉压旁瓣、信噪比损失、主瓣宽度以及多普勒敏感性等因素基础上,用遗传算法对脉压旁瓣抑制性能进行优化,实现超低脉压旁瓣和低信噪比损失。仿真与实验结果表明,优化后的脉压旁瓣具有超低旁瓣特性,完全满足信号处理的要求。Pulse compression technology is mature, and it is applied to radar system widely, but it isn＇t described in this paper gen- erally. The character of pulse compression sidelobe of small LFM is studied here. Based on sidelobe suppression,SNR loss,main- lode width and doppller sensibility etc, genetic algorithm is used to optimize the performance of sidelobe suppression. Finally reali- zing ultra low pulse compression sidelobe. The result of simulation and experiment results prove property of ultra low sidelobe, and satisfies the need of signal process completely.

关 键 词：时宽带宽积 遗传算法 脉冲压缩 旁瓣抑制 信噪比损失 

分 类 号：TN957.51[电子电信—信号与信息处理]