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.
作者
张然
程珺炜
苏文宇
刘春玲
ZHANG Ran;CHENG Jun-wei;SU Wen-yu;LIU Chun-ling(College of Information Engineering of Dalian University,Dalian 116622,China)
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)
关键词
低截获
混沌扩频序列
调制解调
信道编码
anti-interception
chaotic spread spectrum sequence
modulation and demodulation
channel coding
