高精度卫星定位中ITRF框架的可用性

高淑照; 黄丁发

doi:10.3969/j.issn.0258-2724.2011.02.011

高精度卫星定位中ITRF框架的可用性

doi: 10.3969/j.issn.0258-2724.2011.02.011

基金项目:

中央高校基本科研业务费专项资金资助项目(SWJTU11BR015)

详细信息

作者简介:
高淑照(1976-),男,讲师,博士研究生,研究方向为卫星定位技术与方法、精密工程测量与变形观测,电话:13183899220, E-mail:szgao@home.swjtu.edu.cn

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出版历程
- 刊出日期: 2011-04-25

Availability of ITRF Frames in High Precision Satellite Positioning

摘要

摘要: 针对国际全球导航卫星服务组织(IGS)跟踪站坐标和速率的多源选择问题,收集了4个国际组织提供的中国境内4个IGS跟踪站的坐标和速率,将其转换到相同的参考框架和归算历元下进行对比分析.结果表明, 在ITRF2005框架下,不同国际组织提供的站点坐标和速率具有良好的一致性;而在ITRF2000框架下,不同国际组织提供的部分站点坐标和速率存在显著差异.因此,为减小这种差异对高精度卫星定位结果的影响,平差计算前应对比不同国际组织提供的坐标和速率,并用最新数据.
- 国际地球参考框架 /
- 国际全球导航卫星服务组织 /
- 约束点
Abstract: For the multi-source selection of coordinates and velocities of IGS (International Global Navigation Satellite System Service) tracking stations, the coordinates and velocities of 4 IGS tracking stations in China were collected from 4 international organizations, and they were converted to the same reference frame and specified epoch to compare them. The comparison results show that the coordinates and velocities from the different international organizations are consistent well in the ITRF (international terrestrial reference frame) 2005, but the coordinates and velocities of a few IGS tracking stations are discrepant in the ITRF2000. Therefore, in order to reduce the impact of the difference on high precision satellite positioning, coordinates and velocities from different international organizations should be compared before adjustment calculation, and the latest data should be adopted.
- international terrestrial reference frame /
- International Global Navigation Satellite System Service /
- constrained point