一、引言目前绝大多数机场都存在航管楼至飞行区、雷达站之间通信电缆的干扰,以及传输质量差的问题,特别是飞行区内导航设备监控信号和气象数据被严重干扰,以及VHF信号在传输过程中被干扰情况也时有发生。1999年,浦东国际机场一期正式投入使用,也逐渐暴露出通信电缆被严重干扰 I. INTRODUCTION At present, the vast majority of airports have problems with the communication cable between the air traffic control tower and the flight zone and between radar stations, and the problems of poor transmission quality. In particular, the monitoring signals and meteorological data of navigation equipment in the flight area are seriously disturbed. VHF signal interference in the transmission process has also occurred from time to time. In 1999, Pudong International Airport, a formally put into use, but also gradually exposed the communication cable was severely disrupted