多信号体制脉冲压缩系统研究  

A Multiple Signal Pulse Compression System

作　　者：杨斌[1] 陈辅新[1] 向敬成[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《系统工程与电子技术》1999年第9期26-29,共4页Systems Engineering and Electronics

摘　　要：从增强雷达抗干扰反截获能力、抗反辐射导弹（ Ａ Ｒ Ｍ ）攻击及提高目标检测能力出发，成功研制出了多波形脉冲压缩系统。该系统采用数字波形产生和数字脉压技术，使多种不同形式和不同长度的信号可在同一系统上产生并完成脉冲压缩处理，为现代雷达设计和既有雷达的技术改造提供了一种有效的途径。系统设计码元宽度０２μｓ，码长于１２８ 内可变。据多种雷达工作的实际需要，我们分别设计了压缩比为４５、６０、７５、９５ 的线性与非线性调频信号及几种多相码信号。系统测试结果表明，对时带积大于６０ 的不同形式波形压缩输出主副比在ｆｄ ＝ ０ 时均超过３０ｄ Ｂ，是较小时带积低采样率处理的先进水平。In this paper,we describe a multiple signal pulse compression system,which can enhance the radars abilities to counteract ECM,intercept and attack of ARM,and to detect targets.The system employs digital methodology to generate signal waveforms and to complete pulse compressions,which makes compatible processing of various signals possible.It is showed to be an effective approach to design a modern radar or to reform the old radars.In system design the subpulse width is 0\^2μs and code length is variable under 128.In order to meet the requirement of various radars,we have designed several groups of signals,which include LFM,NLFM and polyphase codes, and have different compression ratios such as 45,60,75,95.System test results show that when signal band width and time width product(TB) are big enough,for example,greater than 60,then RMS of the compression output can reach 30dB while the Doppler frequency f\-d =0,which is advanced level under low sampling rate and small TB.

关 键 词：脉冲压缩 线性调频 非线性调频 信号处理 雷达 

分 类 号：TN957.51[电子电信—信号与信息处理]