基于快速拟合的高精度授时技术

本文针对采用晶振产生本地时钟的卫星导航接收机的高精度授时问题，特别是考虑在卫星失锁等不定位情况，提出了一种具备快速拟合的时间同步控制方法，提高了卫星导航接收机的授时精度和可用性。文中分析了影响卫星导航接收机授时精度的几个关键因素，给出了时间同步的软件设计算法实现，在某型卫星导航接收机上进行了测试验证。测试结果表明：本文设计的基于快速拟合的时间同步控制算法有效，提高了卫星导航接收机的授时精度和可用性。

High Precision Timing Technology Based on Fast Fitting

In the paper, aiming at the high precision timing of the satellite navigation receiver using crystal oscillator to produce local clock, especially considering the non-positioning situation such as the loss of satellite lock, a time-synchronization control method with fast fitting was proposed, which improved the timing accuracy and availability of the satellite navigation receiver. This paper analyzes several key factors that affect the timing accuracy of satellite navigation receiver, and verified on a satellite navigation receiver. The test results show that the time synchronization control algorithm designed in this paper is effective and improves the timing accuracy and availability of the satellite navigation receiver.