实值混沌直接序列扩频通信系统及其性能分析  

Real Chaotic Direct Sequence Spread Spectrum Communication System and its Performance Analysis

作　　者：王永川[1] 闫云斌[1] 于一丁[1] WANG Yongchuan YAN Yunbin YU Yiding(Unmanned Aerial Vehicle Engineering Department, Ordnance Engineering College, Shiiiazhuang 050003, Chin)

机构地区：[1]军械工程学院无人机工程系,河北石家庄050003

出　　处：《军械工程学院学报》2017年第2期56-61,共6页Journal of Ordnance Engineering College

基　　金：军队科研计划项目

摘　　要：混沌序列以其天然的不可预测性、非周期特性以及良好的自相关互相关特性,在扩频通信系统中得到了广泛应用.研究了非量化实值混沌直接序列扩频通信系统,从误码率、抗干扰、抗截获、安全性等4个方面对系统性能进行了分析,结果表明,混沌直接序列扩频系统在保持传统的直接序列扩频系统良好的误码率和抗干扰性能的基础上,具有更好的抗截获和安全保密性能.Chaotic sequence is not predicable and non-periodic, and it has good auto-correlation and cross-correlation characteristic. Chaotic sequence is widely applied in spread spectrum communication systems. In the paper, real chaotic direct sequence spread spectrum communication system is studied, and its performance including bit-error-ratio, anti-jamming performance, low probability of interception and security is analysised. The results compared with direct sequence spread spectrum systems show that chaotic direct sequence spread spectrum system has lower probability of interception and higher security. Moreover, chaotic direct sequence spread spectrum system can achieve similar bit-error-ratio and anti-jamming performance compared with direct sequence spread spectrum system.

关 键 词：混沌序列 直接序列扩频 抗干扰 低截获 安全性 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]