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2000国家GPS大地控制网的数据处理和精度评估
引用本文:王敏,张祖胜,许明元,周伟,李鹏,尤晓青.2000国家GPS大地控制网的数据处理和精度评估[J].地球物理学报,2005,48(4):817-823.
作者姓名:王敏  张祖胜  许明元  周伟  李鹏  尤晓青
作者单位:中国地震局地震预测研究所,北京,100036;中国地震局第一监测中心,天津,300180
基金项目:科技部基础研究重大项目前期研究专项(2001CCB01100),“2000国家GPS大地控制网”项目.
摘    要:2000国家GPS大地控制网集合了各类GPS网近10年的观测数据, 提供GPS点在全球参考框架下20000历元的绝对位置.文中简要介绍GPS数据处理的方法,给出数据处理的精度统计;以部分点的实测速度为基础,建立中国大陆地壳运动速度场;基于GPS测量的动态系统状态,选择序贯卡尔曼滤波的广义测量平差方法,对GPS点做顾及地壳运动的整网平差,并给出整网平差结果的精度统计和外部检核.一系列的手段和措施保证了平差结果的合理性和可靠性.

关 键 词:GPS大地控制网  数据处理  地壳运动速度场  整网平差
文章编号:0001-5733(2005)04-0817-07
收稿时间:2004-07-29
修稿时间:2005-03-23

Data processing and accuracy analysis of national 2000' GPS geodetic control network
WANG Min,ZHANG Zu-Sheng,XU Ming-Yuan,ZHOU Wei,LI Peng,YOU Xiao-qing.Data processing and accuracy analysis of national 2000' GPS geodetic control network[J].Chinese Journal of Geophysics,2005,48(4):817-823.
Authors:WANG Min  ZHANG Zu-Sheng  XU Ming-Yuan  ZHOU Wei  LI Peng  YOU Xiao-qing
Institution:1.Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China 2 First Crust Monitoring and Application Center, China Earthquake Administration, Tianjin 300180, China
Abstract:The original data from a number of GPS campaigns carried out in the last 10 years are aggregated to construct the National 2000' GPS Geodetic Control Network and the positions of 2482 GPS sites at 20000 epoch with respect to International Terrestrial Reference Frame are obtained. In the paper, we introduce the method for processing GPS data, deriving site velocities from GPS data,establishing the crustal motion velocity field of the Chinese continent, and carrying out the network integrated adjustment employing a Kalman filter. The accuracy analysis of GPS daily solutions and final coordinate solutions are presented. A series of technical steps ensure the rationality and reliability of the adjustment result.
Keywords:GPS geodetic control network  Data processing  Crustal motion velocity field  Network integrated adjustment
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