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PCM设备是民航空管甚高频信号实现远距离传输的主要设备,PCM设备在日常运行过程中,由于外部原因会发生一种E线长时间对地的现象,会严重影响空中机组和地面管制的话音通信质量。本文在单片机平台上使用C语言设计了两种不同思路的程序,对E线长时间对地现象进行识别和抑制。通过实验平台进行测试,此两种程序都能够实现快速识别的抑制E线长时间对地的现象。
PCM equipment is the main equipment for remote transmission of VHF signals of civil aviation ATC. During the daily operation of PCM equipment, a long time-to-ground phenomenon of E line will occur due to external reasons, which will seriously affect the aircrew and ground control Voice communication quality. In this paper, the SCM platform using C programming language designed two different ideas of the program, on the E line for a long time to identify and suppress the phenomenon. Through the experimental platform for testing, these two programs are able to quickly identify the E line to suppress the phenomenon of a long time to ground.