基于靶场CORS的试验区北斗数据质量分析

BeiDou data quality analysis based on range CORS

自2011年国际GNSS服务(International GNSS Service,IGS)启动多GNSS实验项目(Multi-GNSS Experiment,MGEX)以来,多GNSS兼容和互操作成为研究热点,我国率先发起国际GNSS监测评估系统(International GNSS Monitoring and Assessment System,iGMAS)旨在对GNSS的运行状况和性能指标进行监测评估.鉴于此,本文从用户使用端出发,通过对连续运行参考站(continuously operating reference station,CORS)的数据完整率、周跳比、伪距多路径、载噪比(carrier to noise ratio,CNR)和伪距测量精度进行量化分析,探讨了基于靶场CORS系统进行试验区北斗数据质量监测与评估的方法,为高精度武器试验鉴定提供科学、可量化的卫星环境精度指标.

Since International Global Navigation Satellite System Service(IGS)started Multi-GNSS Experiment(MGEX)in 201l,multi-GNSS compatibility and interoperability have become a research hotspot.International GNSS Monitoring and Assessment System(iGMAS)were initiated for the first time in order to monitor and evaluate the running status and performance indicators of GNSS.In view of this,starting from the users,this paper makes quantitative analysis on the data integrity rate,cycle ratio,pseudorange multipath,carrier to noise ratio(CNR),pseudorange measurement accuracy of continuously operating reference station(CORS)data,and discusses the method of monitoring and evaluation of the BeiDou data quality in the range area based on the range CORS,so as to provide a scientific and quantifiable satellite environmental accuracy index for high-precision weapon test.