联合IGS站进行区域GPS大地网数据处理的两种方法讨论  

Discussion on Different Methods for Processing Regional GPS Geodetic Network by Connecting IGS Tracing Stations

作　　者：王晓明[1] 成英燕[1] 蒋志浩[2,3] 刘立[4] 

机构地区：[1]中国测绘科学研究院,北京市莲花池西路28号100830 [2]武汉大学测绘学院,武汉市珞喻路129号430079 [3]国家基础地理信息中心,北京市紫竹院百胜村1号100044 [4]浙江省第一测绘院,杭州市教工路135号310012

出　　处：《武汉大学学报（信息科学版）》2013年第4期416-420,共5页Geomatics and Information Science of Wuhan University

基　　金：国家863计划资助项目(2013AA122501);国家测绘地理信息局地心坐标系维护与推广应用项目(A1201)

摘　　要：应用国际IGS测站和中国地壳观测网络中的GPS站点,分别采用选取全球范围的部分稳定ITRF点为框架站点和选择周边的稳定ITRF点为框架站点两种方法进行区域数据处理。两种方法所得的坐标结果之间存在着系统性偏差,偏差的大小与特性在平面和高程方向上具有不同的表现形式,且该特性与站点的时空分布具有一定的相关性。对以上现象进行归纳分析,给出了关于区域框架建立的建议。The original data of the GPS stations in the Crustal Movement Observation Net- work of China was processed. We adopted two different data processing methods differ in choosing reference coordinators to process the data. Part of ITRF stations which are superior in stability were selected in the first method and the ITRF stations in the neighborhood were selected in the second. Comparison of the result through processing the data relatively, sys- tematic deviations have been found between the two results. The reulsts show that the mag- nitude and characteristics of the systematic deviations act differently in different directions, and the functional mechanism is relative to the spatial and temporal distribution of the sites. Through analysis on the phenomena and findings refered, some relative conclusions are de- rived and the advices on establishment of regional coordinate system are also given.

关 键 词：ITRF 局部参考框架 系统偏差 板块运动 公共误差 

分 类 号：P228.1[天文地球—大地测量学与测量工程] P228.42[天文地球—测绘科学与技术]