摘要
以某机场民航通信频率受到干扰为案列,阐述了广播电视发射机互调信号产生的原因,分析了航空机载导航系统工作原理,提出了广播电视互调信号干扰的解决方案,对保障民航通信安全、合理规划广播电视发射频率,具有借鉴意义。
Taking civil aviation communication frequency interference at a certain airport as a case, reasons of broadcasting and television transmitter intermodulation signals are expounded, and also working principles of the airborne navigation system are analyzed. Meanwhile, solntions are given tor radio and television intermodulation interference. It is helpful to ensure security of civil aviation communication and plan broadcasting and television transmission frequency reasonably.
出处
《广播与电视技术》
2015年第10期102-104,共3页
Radio & TV Broadcast Engineering
关键词
二阶互调
图像载频
导航
场强
本机振荡器
Second-order inter-modulation, Carrier frequency, navigation, Field-intensity, Local oscillator