干扰环境下卫星授时同步策略研究

Research on Satellite Timing Synchronization Strategy in Jamming Circumstance

卫星授时方式具有成本低、精度高、覆盖范围广等优点,目前得到了广泛应用,但其易受干扰、破坏。本文研究了卫星授时的原理以及目前存在的主要干扰手段,提出了将卫星授时手段与网络授时手段相结合,利用网络授时抗干扰性强的特点,确保应用系统时间在干扰情况下的低精度同步,同时在卫星授时可用的情况下提高系统时间同步精度,并就用户端同步策略实现方式进行了初步探讨。

Satellite timing method has the advantages of low cost, high precision, wide coverage, etc. It has been widely used, but it is susceptible to interference and destruction. The paper analyzed the principle of satellite timing and the main interference means. It proposed the combination of satellite timing and network timing. Taking advantage of the anti-interference characteristics of network timing, the application system time is in the interference of low precision synchronization. Meantime improve the synchronization accuracy of system time when the satellite timing is available. And a brief discussion on the implementation of synchronization strategy on client side is made here.