战场QPSK通信系统干扰注入仿真研究

无线射频干扰注入可对无线通信网络系统进行干扰,甚至实现非授权接入实施网电攻击。若捕获敌方的通信协议,掌握其采用的通信模式,如何进行干扰甚至将虚假的信息注入无线网络,是实施网电攻击的技术难点。针对指挥通信系统中的无线开放环节,基于软件无线电技术,分析了战场通信目标信号系统的技术指标,对编码方式、信号带宽、载波频率、调制方式和调制滚降系数等主要参数进行分析,在MATLAB/Simulink环境下建立QPSK数字频带传输系统和射频干扰注入系统模型,并且对关键节点进行仿真。仿真结果表明,在不同干扰方式下,通信系统会受到较明显的干扰,或者解调出与注入一致的干扰信息,达到了验证设计的目的。

Simulation Research on Jamming Injection of QPSK Communication System in Battlefield

Wireless RF jamming injection is used to jam wireless communication network system.It can implement cyber attack,even by unauthorized access.If the enemy's communication protocol was captured and the communication mode was mastered,the technical difficulties of achieving cyber attack is how to jam and inject the inaccurate information into the wireless network.According to the weak link of open wireless on Command Communication System,a wireless RF jamming injection basic model framework is constructed based on Software Defined Radio (SDR) technologies.The main parameters of encoded mode,signal bandwidth,carrier frequency,modulation type and rolloff-factor are analyzed.The QPSK digital frequency band transmission system and RF jamming injection system are constructed in MATLAB/Simulink environment,and the critical nodes are simulated.Simulation results show that the system will be jammed obviously and the demodulated information is consistent with injected information in different jamming ways.The purpose of the design is verified.