低信噪比FPPS的弱信号提取与特征识别

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (2): 310-314.

低信噪比FPPS的弱信号提取与特征识别

柴娟芳, 司锡才, 李利, 张雯雯

哈尔滨工程大学信息与通信工程学院, 黑龙江, 哈尔滨, 150001

收稿日期:2007-10-12 修回日期:2008-05-07 出版日期:2009-02-20 发布日期:2010-01-03
作者简介:柴娟芳(1984- ),女,博士研究生.主要研究方向为宽频带系统的信号检测,处理与识别.E-mail:chaijuanfang2006@163.com

Weak signal extraction and feature recognition to polynomial phase signal in low SAR

CHAI Juan-fang, SI Xi-cai, LI Li, ZHANG Wen-wen

Coll. of Information and Communication Engineering, Harbin Engineering Univ., Harbin 150001, China

Received:2007-10-12 Revised:2008-05-07 Online:2009-02-20 Published:2010-01-03

摘要/Abstract

摘要： 针对目前电子战中脉压雷达信号淹没在强背景噪声中难以检测提取的现象,在信号相位匹配原理基础上,提出一种改进的弱信号提取模型—单元阵分段信号匹配法来实现对弱信号的提取;在此基础上结合多项式相位信号特点,提出一种改进的特征识别模型——剔除野点的多级中心差分法来实现对脉压雷达信号的特征识别.通过仿真实验表明,该提取识别模型对强白噪声环境下脉压雷达信号的提取与特征识别具有很好的效果.它不需要预先进行训练,并且计算简单易于实现,具有广泛的工程应用前景.

Abstract: Subsection signals phase matching from single antenna,an improved weak signal extraction model has proposed based on the signal phase matching principle in electronic worfare envhronment in this paper,which aimed at that it's extremely difficult to detect and extract the pulse compression radar signal in low SNR at present.Then multilevel central difference scheme eliminating errors,an improved features recognition model has proposed to recognize pulse compression radar signals,combined with the features of polynomial phase signal.The simulation experiment results showed that this extraction and feature recognition model can extract and recognize the pulse compression radar signals effectively in low SNR.This new model does not need training simples and is easy to carry out,so it has broad engineering application prospects.

中图分类号:

TN957.57

柴娟芳, 司锡才, 李利, 张雯雯. 低信噪比FPPS的弱信号提取与特征识别[J]. Journal of Systems Engineering and Electronics, 2009, 31(2): 310-314.

CHAI Juan-fang, SI Xi-cai, LI Li, ZHANG Wen-wen. Weak signal extraction and feature recognition to polynomial phase signal in low SAR[J]. Journal of Systems Engineering and Electronics, 2009, 31(2): 310-314.