基于北斗卫星的双基地雷达时间和频率同步方法

A Method of Time and Frequency Synchronization Based on Beidou Satellite for Bistatic Radar

时间和频率同步是双基地雷达的关键技术之一,文中介绍了一种基于北斗卫星的时间和频率同步方案,即接收北斗卫星转发的标准时间和频率信号,采用同步系统功能模块实现两基地的时间和频率同步,该方案克服了传统同步装置需要较长时间来校正频率误差的缺陷,提高了两基地的时间和频率同步精度,同时也提高了测距精度。

Time and frequency synchronization is a key technology of the bistatic radar. In this paper a method based on Beidou satellite is introduced, that is realized by receiving standard time and frequency signal transmitted from beidou satellite and adopting synchronization system＇s function module, so it overcomes the fault that tradition synchronization devices need more time to revise frequency＇s error and greatly enhances synchronization accuracy of time and frequency in bistatic radar, at the same time the accuracy of range＇s measurement is improved.