区域精密对流层延迟建模

基金项目: 国家自然科学基金资助项目(40704002)；湖南省科技重大专项基金资助项目(2008FJ1006)；中南大学前沿研究计划资助项目(2009QZZD002)

详细信息

Modeling Regional Precise Tropospheric Delay

¹ Department of Surveying Engineering & Geo-Informatics,Central South University,932 South Lushan Road,Changsha 410083,China;² Key Lab.of Precise Engineering Surveying & Deformation Disaster Monitoring of Hunan Province,932 South Lushan Road,Changsha 410083,China

Funds: 国家自然科学基金资助项目(40704002)；湖南省科技重大专项基金资助项目(2008FJ1006)；中南大学前沿研究计划资助项目(2009QZZD002)

摘要: 在详细分析高差以及对流层延迟水平变化对GPS测量精度影响的基础上,通过Bernese软件估算香港连续参考站网基站数年的天顶对流层延迟,建立了符合香港地区的只需时间与位置输入参数的精密对流层延迟改正模型。经检验,新模型的对流层改正精度与输入标准气象的Saastamoinen模型相比提高了约2～3倍,对高差较大的对流层延迟改正效果更加显著。
- 对流层延迟 /
- 区域对流层模型 /
- GPS测量精度
Abstract: In this paper,the effects of height difference and the horizontal change of troposphere on the accuracy of GPS surveying is discussed at first.And then GPS observation data collected in several years from Hong Kong Continuously Reference Station Network is used to model the precise tropospheric delay.This model is based on estimated zenith tropospheric delay of all the stations using the Bernese GPS software.The input parameters of the model are day of year and location of the station.The testing results show that the tropspheric delay error can be reduce about 2 to 3 times compared to Saastamoinen model with standard meteorological parameters,and the effect is more remarkable when the height difference of two stations is large.
- tropospheric delay /
- regional tropospheric model /
- GPS measurement accuracy