卫星测控站频谱监测系统设计方案及实现

Design and Implement of a Spectrum Monitoring System  Used in Satellite TT&C Station[HS)]

摘要:

为解决卫星测控站人工监测下行中频信号效率低、无自动化的频谱处理等问题,设计并实现了一种基于开关矩阵和频谱仪的多路频谱监测系统;首先介绍了该系统的硬件组成,然后介绍了系统软件设计方案,针对系统功能,提出了若干个频谱监测相关的处理算法,包括基于SCPI的频谱实时监测、基于临界线的异常信号检测、基于频谱轨迹的频谱录像与回放以及一种快速的遥控命令捕获等算法,最后通过试验说明系统满足频谱监测的需求;实际应用结果表明,该系统运行稳定可靠,各算法是实用有效的。

Abstract:

In satellite TT&C station,manually monitoring spectrum of downlink IF signal is a low effective way and it has no automatically spectrum dealing way. To solve the problems,the paper designs and implements a multi-spectrums monitoring system based on a switch matrix and two spectrum analyzers. First,the paper introduces the hardware structure of the system. Then,the paper introduces the design framework of system software. Next,to implement the functions of the system,the paper designs some dealing algorithms about spectrum monitoring. The algorithms are monitoring spectrum in real time based on SCPI,detecting abnormal signal based on critical line,recording and replaying spectrum based on trace data,and a fast automatically capturing telecommand. At last,it is illustrated that the system satisfies the requirements of spectrum monitoring by experiments. According the actual application,the system can run stably and reliably,and the algorithms are practical and effective.