老挝北斗CORS系统建设与应用  

Construction and application of Laos BeiDou CORS system

作　　者：杨忠祥[1] 刘鸿飞 乔忠诚 周定杰 安剑英[1] YANG Zhongxiang;LIU Hongfei;QIAO Zhongcheng;ZHOU Dingjie;AN Jianying(Yunnan College of Tourism Vocation,Kunming Yunnan 650221,China;Yunnan Institute of Surveying and Mapping Engineering,Kunming Yunnan 650033,China)

机构地区：[1]云南旅游职业学院,云南昆明650221 [2]云南省测绘工程院,云南昆明650033

出　　处：《北京测绘》2022年第10期1439-1442,共4页Beijing Surveying and Mapping

基　　金：云南省教育厅科学研究基金(2022J1505)。

摘　　要：为了保障湄公河地理空间框架的一致性,本文以老挝国家为例,阐述了首个北斗卫星定位系统(LAOCORS)系统建设工作。为获取连续运行参考站(CORS)精确位置信息,使用已建成9个老挝基准站,采用GAMIT10.7对国际GNSS服务组织(IGS)站、国内CORS联测数据进行解算,并对有、无北斗信号条件下对CORS站定位精度影响进行测试分析。结果表明,老挝CORS参考站水平方向和垂直方向平均值中误差达到厘米级定位精度,相对精度已达到10^(-8)量级;其内、外符合精度分布均匀,三星(BDS、GPS、GLONASS)组合精度和效率明显高于双星(GPS、GLONASS),测量初始化时间以及稳定性、可靠性方面有明显提高。In order to ensure the consistency of the geospatial framework of the Mekong River,in this paper the construction of the first BeiDou satellite positioning system in Laos was described as an example.In order to obtain the precise location information of continuously operating reference stations(CORS)stations,nine established reference stations in Laos were used to calculate the joint measurement data of international GNSS service(IGS)and Domestic CORS using GAMIT10.7,and the influence on the positioning accuracy of CORS stations were tested and analyzed with and without Beidou signals.The test results showed that the average error accuracy in horizontal and vertical directions of Laos CORS reference station was better than 1 cm,and the relative accuracy was 10^(-8) magnitude.The internal and external coincidence accuracy of Laos CORS system was evenly distributed.The combination accuracy and efficiency of Samsung(BDS,GPS,GLONASS)were significantly higher than that of binary(GPS,GLONASS),and the measurement initialization time,stability and reliability were significantly improved.

关 键 词：北斗CORS系统 坐标联测 基线解算 精度分析 应用测试 

分 类 号：P228.4[天文地球—大地测量学与测量工程]