卫星导航接收机时延测定技术研究

Research on Time Delay Measurement Technology for Satellite Navigation Receivers

利用卫星导航接收机进行高精度授时同步是一种简单有效的授时同步手段。导航接收系统时延的精确测量是进行高精度授时的前提,其输出秒脉冲信号的时延更是影响远距离授时、时间同步的关键。围绕卫星导航接收系统时延的测定,通过分析卫星导航接收机的时延构成及特点,建立了卫星导航接收机的时延构成模型,制定了便于操作的卫星导航接收机时延测定的方法,搭建了一套完整的卫星导航接收机时延测定系统,并对系统进行了标定和实验验证。

The use of satellite navigation receivers for high-precision time synchronization is a simple and effective timing synchronization means. The accurate time delay measurement of navigation receiver is the precondition of high precision timing,and the delay of output second pulse signal is the key to the long-distance timing synchronization. Based on the determination of the delay of the satellite navigation receiving system,by analyzing the delayed composition and characteristics of the satellite navigation receiver,the delay composition model of the satellite navigation receiver is established,the method of delay determination of the satellite navigation receiver is developed,and a complete delay determination system of the satellite navigation receiver is set up. The calibration and experimental verification of the system are also carried out.