线性调频脉冲信号的自适应压缩技术  

A Technique of Adaptive Compression for Pulse Signal with Linear Frequency Modulation

作　　者：孟建[1] 胡来招[1] 吴玮琦[1] 

机构地区：[1]电子对抗国防科技重点实验室,成都610036

出　　处：《系统工程与电子技术》2000年第8期41-43,共3页Systems Engineering and Electronics

摘　　要：提出了一种对电子战接收机获得的线性调频脉冲信号进行自适应压缩的技术。它首先通过自相关的方法确定含噪序列中是否含有信号 ,以及信号出现的时间位置 ;然后从这一时间位置处截取一段含噪的信号作为线性调频压缩的相关源 ,对信号进行匹配压缩。经仿真验证 ,该技术可以从被噪声湮没的数据中有效地提取出压缩后的脉冲信号 ,如果将其用于电子战侦察接收机 ,可以将线性调频脉冲信号的灵敏度提高近 7dB～ 10dB。In this paper, a method is proposed to adaptively compress pulse signal with linear frequency modulation received by electrical wave (EW) receiver. It regards a portion of signal contaminated by noise as correlative local oscillator and compresses the signal received by EW receiver. Its effectiveness in extracting pulse signal with linear frequency modulation from noise has been verified by a simulation example. For EW application, this technique will improve the sensitivity of receiver by 7dB～10dB.

关 键 词：线性调频 脉冲信号压缩 雷达信号 电子战 

分 类 号：TN974[电子电信—信号与信息处理] TN957.51[电子电信—信息与通信工程]