基于混沌理论的低截获波形设计  

Based on Chaos-Theory Anti-Interception Waveform Design

作　　者：张然 程珺炜 苏文宇 刘春玲[1] ZHANG Ran;CHENG Jun-wei;SU Wen-yu;LIU Chun-ling(College of Information Engineering of Dalian University,Dalian 116622,China)

机构地区：[1]大连大学信息工程学院

出　　处：《大连大学学报》2019年第6期1-7,共7页Journal of Dalian University

基　　金：装备发展部领域基金一般项目(61403110308);辽宁省博士启动基金项目(20170520371)

摘　　要：在现代战争中,飞行器之间通信的隐蔽性是飞行器完成打击、侦查等任务的关键因素,如何提高系统的抗截获性能成为军用通信系统设计的关键问题。针对上述问题,本文设计了一种基于混沌理论的低截获波形,并对其抗截获性能进行了分析。首先基于混沌序列扩频系统,分析了混沌序列初值和分支参数对系统性能的影响。然后将低截获相关理论应用于通信系统设计中,以此为基础选取了与混沌扩频相匹配、抗截获性能最佳的调制解调方式和信道编码方式。最后建立了抗截获通信系统仿真模型,分析了该系统的截获距离、品质因数和误码率,验证了设计的有效性,为低截获通信系统的设计提供了参考。In modern warfare,the concealment of communication between aircrafts is a key factor in the mission of the aircraft to complete the strike and investigation.How to improve the anti-interception performance has become a key issue in the design of military communications systems.In view of above problem,in this paper based on chaos theory a waveform design of anti-interception is proposed,and the anti-interception performance of system is analyzed.Firstly,the influence of initial values and branch parameters of chaotic sequence on system performance is analyzed.Then,the anti-interception correlation theory is applied to the design of communication system.In the basis of the theory,the modulation and demodulation method and channel coding method with the best anti-interception performance matched with chaotic spread spectrum are selected.Finally,the simulation model of anti-interception communication system is established,and the intercept distance,quality factor and bit error rate of the system are also analyzed.The validity of the design is verified,which provides a reference for designing the anti-interception communication system.

关 键 词：低截获 混沌扩频序列 调制解调 信道编码 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]