无线电干扰一直是影响民航飞行安全的一个大问题。随着无线电通讯业务的迅速发展 ,各类干扰问题越来越严重。主要表现为通讯设备品种繁多 ,竞争激烈 ,难免混杂不合格产品 ,有的甚至还私设电台。另外 ,电磁环境中的各类干扰源也经常侵入到民航地空通讯系统中 ,造成通讯信号失真 Radio interference has always been a major issue affecting the safety of civil aviation flights. With the rapid development of radio communications, various types of interference have become more and more serious. Mainly for a wide range of communications equipment, highly competitive, inevitably miscellaneous unqualified products, and some even private radio. In addition, all kinds of interference sources in the electromagnetic environment often invade civil aviation ground-to-air communication system, resulting in communication signal distortion