基于Simulink超短波电台的故障仿真研究

摘要

本文以某型航空超短波电台通信距离近故障为切入点,依据电台工作的直扩模式通信机理,采用Simulink搭建了直扩通信系统的仿真模型,并设置了接近电台工作参数的仿真条件.研究了在脉冲调制干扰情况下对电台接收机灵敏度指标的直接影响和对通信距离间接影响的程度,通过仿真运算和结果分析,可复现电台的故障产生过程,为查找故障部位分析原因并进行科学处理提供了依据.%This paper takes the short distance fault of an airborne UHF radio as the breakthrough point, and the simulation models of the UHF radio communication system in DSSS mode and pulse interference are built. And the simulation condition is set according to the working parameter of the UHF radio. The direct influence on the UHF radio receiver sensitivity and the indirect influence on the communication distance of the pulse interference are studied. In simulation, the failure process in the UHF radio was recurred, and the simulation provides a basis for trouble shooting and the removal of fault after result analysis.