区域导航系统站间时间同步野值剔除方法研究  

Research on Eliminating Outlier in Regional Navigation Time Synchronization

作　　者：黄颖涛 HUANG Yingtao

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《现代导航》2021年第2期94-97,共4页Modern Navigation

摘　　要：在区域导航系统基准站站间的时间同步中,因动态、干扰和测量信息不能及时共享等因素影响使测量数据突跳带来的时差野值问题,导致时间同步精度下降,严重影响导航系统的时间同步性能。本文基于双向时间比对同步技术,给出区域导航站间时间同步算法,并提出一种站间时间同步野值剔除方法和滤波方法,解决由不定因素带来的时差测量野值问题,提升系统站间时间同步性能。通过在区域导航系统设备中的实施和外场试验,验证了该方法的可行性。In the time synchronization of regional navigation systems,the outlier of the time difference caused by the measurement data jump due to the influence of dynamic,interference and measurement information that cannot be shared in time will decrease the accuracy of time synchronization and seriously affect the performance of time synchronization of regional navigation systems.In the paper,a time synchronization contention method between regional navigation stations is presented based on the bidirectional time comparison synchronization technique,and a time synchronization outlaw elimination method and filtering method between stations are proposed to solve the problem of time difference measurement value caused by uncertain factors and improve the performance of time synchronization between stations.The feasibility of the method is verified by the implementation of the method in the regional navigation system and the field test.

关 键 词：区域导航 时间同步 时差值 野值剔除 

分 类 号：TN967.1[电子电信—信号与信息处理]