调频同步广播系统相干区信号分析

The Signal Analyzing in Interference Section of FM Synchronization Broadcast System

以两点主从发射设备的调频同步广播系统为例,分析了在相干区内信号叠加的特性,指出频率的锁定对调频同步广播系统的重要性,及相干区对主从发射信号的时延差引起的信道频率衰落现象。并讨论在相干区内的信号接收性能的测试及调试方法。

In this paper, the character of the interference section is analyzed basing on FM synchronization broadcast system of the main and subordinate two point transmit device. The frequency locking importance was pointed out,and the time difference of receive signal in interference section from the main and subordinate transmit device will arise the phenomenon of frequency declining. The test method and debug method of signal receiving in the interference section are discussed.