基于时变白化滤波器的DSSS系统干扰盲检测

doi:10.12305/j.issn.1001-506X.2021.07.30

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (7): 1981-1988.doi: 10.12305/j.issn.1001-506X.2021.07.30

基于时变白化滤波器的DSSS系统干扰盲检测

陈晓威^1,^2,*, 杨文革¹

1. 航天工程大学电子与光学工程系, 北京 101416
2. 航天工程大学研究生院, 北京 101416

收稿日期:2020-08-07 出版日期:2021-06-30 发布日期:2021-07-08
通讯作者: 陈晓威
作者简介:陈晓威(1990—), 男, 博士研究生, 主要研究方向为通信抗干扰、信号检测|杨文革(1966—), 男, 教授, 博士, 主要研究方向为信号处理

Blind jamming detection based on time variant whitener for DSSS systems

Xiaowei CHEN^1,^2,*, Wenge YANG¹

1. Department of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, China
2. Graduate School, Space Engineering University, Beijing 101416, China

Received:2020-08-07 Online:2021-06-30 Published:2021-07-08
Contact: Xiaowei CHEN

摘要/Abstract

摘要：

将循环维纳滤波应用于直接序列扩频(direct sequence spread spectrum, DSSS)系统的干扰检测, 并提出了一种干扰盲检测器, 称之为时变白化滤波检测器。由于DSSS信号和干扰信号具有不同的循环平稳特征, 因此可以调整时变白化滤波检测器的滤波器系数, 使干扰检测器的输出只包含背景噪声和干扰信号, 从而实现干扰盲检测。仿真结果表明, 采用本文提出的循环平稳干扰检测器的DSSS接收系统能够在较大的干信比范围内检测干扰信号的存在, 并且在性能上优于时不变白化滤波检测器。

关键词: 循环平稳信号, 直接序列扩频通信, 频域频移滤波器, 干扰检测

Abstract:

This paper applies cyclic wiener filter to jamming detection for direct sequence spread spectrum (DSSS) systems and proposes a blind jamming detector, named time variant whitener based detector. Due to the distinct cyclostationarity features of the DSSS signal and jamming signal, the filtering coefficients of time varying whitener (TVW) detector can be adjusted to make the output of the detector contain jamming signal and background noise, so as to realize blind jamming detecting. The simulation results show that the DSSS receiving structures using the proposed cyclostationary-based jamming detection can decide the presence of jamming signal at a wide range of jamming-to-signal ratio, and outperforms the time invariant whitener-based detector.

Key words: cyclostationary signal, direct sequence spread spectrum (DSSS) communication, frequency domain frequency shift filter, jamming detection

中图分类号:

TN975

陈晓威, 杨文革. 基于时变白化滤波器的DSSS系统干扰盲检测[J]. 系统工程与电子技术, 2021, 43(7): 1981-1988.

Xiaowei CHEN, Wenge YANG. Blind jamming detection based on time variant whitener for DSSS systems[J]. Systems Engineering and Electronics, 2021, 43(7): 1981-1988.

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基于时变白化滤波器的DSSS系统干扰盲检测

Blind jamming detection based on time variant whitener for DSSS systems

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