【作者】 吴显兵； 冯来平； 任红飞；

【Author】 Wu Xianbing~(1,2),Feng Laiping~1,Ren hongfei~1 (1 Xi’an Research Institute of Surveying and Mapping Xi’an 710054 2 Chang’an University Xi’an 710054)

【机构】 西安测绘研究所； 长安大学；

【摘要】 为了解决卫星导航系统各类地面站的坐标修正问题,必需精确给出各个地面站受地壳板块运动引起的位置变化速度。本文采用中国地壳运动观测网GPS观测数据计算的实测速度场,利用滑动欧拉矢量建模法建立了局部板块运动模型,并对其精度进行了分析,结果表明在东西方向的精度为2.092 mm/a,在南北方向的精度为2.072mm/a,在点位分布较少的地区和我国边界地区,其精度并没有明显地降低,可用于我国卫星导航系统各类地面站的坐标修正。更多还原

【Abstract】 In order to solve various types of amendment problems of ground stations’coordinates in satellite navigation system,it is necessary to accurately give the rate of change of the position for each ground station caused by the plate movement.In this paper,We adopted the measured velocity fields which computed by GPS observation data of China Crustal Movement Observation Network,and established local plate motion model using sliding Euler vector modeling,its precision analysis results show that the east-west direction has the accuracy of 2.092 mm/a.the north-south direction has the accuracy of 2.072mm/a,in sparsely distributing areas and border of China,its accuracy is not significantly reduced,So it can be used to amend the coordinares of various types of ground stations in China’S satellite navigation system.更多还原