顾及江西CORS网的GPS基线联合解算可靠性分析  

Reliability analysis on GPS baseline joint solution considering Jiangxi CORS network

作　　者：梅泽 孙喜文 赵旭坤 Mei Ze;Sun Xiwen;Zhao Xukun(School of Surveying and Testing, Shaanxi Railway Institute, Shaanxi Weinan, 714099, China;School of Urban Rail Engineering, Shaanxi Railway Institute, Shaanxi Weinan, 714099, China)

机构地区：[1]陕西铁路工程职业技术学院测绘与检测学院,陕西渭南714099 [2]陕西铁路工程职业技术学院城轨工程学院,陕西渭南714099

出　　处：《机械设计与制造工程》2021年第1期76-80,共5页Machine Design and Manufacturing Engineering

基　　金：陕西铁路工程职业技术学院自然科学基金资助项目(KY2019-64)。

摘　　要：选取江西连续运行参考站(CORS)网基准站为研究对象,采用双差数学模型联合国际地球力学服务组织全球连续运行跟踪站进行基线解算,结果表明:联合解算的站坐标精度较高,整周模糊度解算小于90%,满足高精度全球定位系统基线解算的要求;连续运行参考站网各台站的坐标中误差最大不超过3 mm,标准化均方根误差值小于0.3 mm;对比分析台站残差图时,应尽量选择采集观测时间较长的台站,对获取较高观测精度与解算精度有重要意义。The reference station of the Jiangxi CORS network is selected as the research object.The double-difference mathematical model is combined with the IGS global continuous operation tracking station to perform the baseline calculation.The results show that the coordinate accuracy of the joint solution is high,and the whole week ambiguity solution is less than 90%,which meets the requirements of high-precision GPS baseline calculation.The maximum error in the coordinates of each station in the CORS network is no more than 3 mm,and the NRMS value is less than 0.3 mm.When comparing and analyzing the residual maps of stations,the stations with longer collection and observation time should be selected as far as possible,which is of great significance to obtain higher observation accuracy and calculation accuracy.

关 键 词：连续运行参考站网 全球定位系统 双差模型 基线解算 可靠性分析 

分 类 号：P228.1[天文地球—大地测量学与测量工程]