时钟频率系统常见故障及分析

Common breakdowns of time & frequency system

高精度、高稳定度的时间基准是极轨气象卫星接收系统业务运行的根本保证。XLi时钟频率系统将长期稳定度好的GPS与短期稳定度好的铷钟相结合,为接收系统在网设备提供精确的时间。因此确保其全天候的正常工作成为了关键。本文介绍了XLi时钟频率系统的工作原理,同时结合实际应用情况,对其常见故障现象进行了描述及原因分析,并给出了其排查方法,为设备的故障定位与检修提供了重要依据。

Time standard is of high accuracy and stability, which is the fundamental guarantee for the running of the polar orbiting meteorological satellite acquisition system. XLi time ＆ frequency system is the combination of long term stability GPS and short term stability Rb oscillator that can provide accurate time for the equipment in the network. It is important to ensure its operation in normal all day. Based on the practical application, this paper introduces the principle of XLi time ＆ frequency system and describes its common breakdowns. Then, troubleshooting methods are given out that provide an important basis for fault finding and maintenance.