摘要
某卫星导航系统进行系统级电磁兼容试验时,出现部分导航卫星的信号丢失,无法正确导航定位的现象。经比对分析和测试验证,故障定位为卫星导航系统的三模式接收天线没有滤波设计,致使接收链路混入干扰信号,卫星导航系统失灵。
In the system level electromagnetic compatibility test of a satellite navigation system, some navigation satellite signals are lost and the navigation and positioning can not be correct. Through comparison analysis and test verification, it is proved that the three-mode receiving antenna of the satellite navigation system has no filtering design and this leads to the interference signal mixed with the receiving link and the failure of the satellite navigation system.
