陆态网测站高精度解算分区方案

Partition scheme research on high accuracy solution of crustal movement observation network of China

中国大陆构造环境监测网络由260个连续全球定位系统观测站点和2 000个不定期全球定位系统观测站点构成,一般采用GAMIT或Bernese高精度数据处理软件进行处理。由于GAMIT及Bernese软件对测站数处理能力的限制,必须对陆态网连续运行基准站进行分区解算。针对这一问题,为研究不同分区方案对陆态网解算精度的影响,该文基于全国55个陆态网络连续运行基准站数据,采用整网解算方案以及间距分区法和区域子网划分法分别进行解算,并以整网解算结果作为标准值,对比两种分区方案与整网解算方案的基线长度差及坐标差。结果表明,间距分区方案解算精度比区域子网划分方案精度高,可实现对陆态网分区的高精度解算。最后利用间距分区法对全国240个陆态网络连续运行基准站进行分区解算,得到了较高精度的解算结果。

Crustal Movement Observation Network of China is composed of 260 continuous global positioning system （GPS） observation stations and 2 000 irregular GPS observation stations. The stations data are usually pro- cessed by the GAMIT or Bernese high precision software, however, due to the processing capacity constraint of the above two software, the stations should be divided into several regions to solve. In order to study the effect of different partition scheme on Crustal Movement Observation Network of China solution accuracy, the whole net- work solution scheme, space partition scheme and regional subnet partition scheme were utilized process all 55 sta- tions data. The result of the whole network solution scheme was served as a standard, this paper compared the difference in baseline and coordinate between the two partition scheme and the whole network solution scheme, and infered that the solution accuracy of the space partition scheme was higher than the regional subnet partition scheme. Finally, the space partition scheme was used to process the 240 stations of Crustal Movement Observation Network of China, and high accuracy partition solution was achieved.