GPT/GMF和GPT2w/VMF1对流层模型在我国境内的适用性分析  

Applicability analysis of GPT/GMF and GPT2w/VMF1 tropospheric models in China

作　　者：张元源 李林阳[2,3] 汪菲菲 HANG Yuanyuan;LI Linyang;WANG Feifei(Unit 31009,Beijing 100089,China;Information Engineering University,Zhengzhou 450001,China;State Key Laboratory of Geodesy and Earth's Dynamics,Wuhan 43000,China;Unit 31002,Beijing 100089,China)

机构地区：[1]31009部队,北京100089 [2]信息工程大学,河南郑州450001 [3]大地测量与地球动力学国家重点实验室,湖北武汉430000 [4]31002部队,北京100089

出　　处：《测绘科学与工程》2020年第1期72-78,共7页Geomatics Science and Engineering

基　　金：大地测量与地球动力学国家重点实验室基金资助项目(SKLGED2020-3-3-E)。

摘　　要：采用陆态网的观测数据,开展非差无电离层组合PPP实验,分析了GPT/GMF和GPT2w/VMF1对流层模型在我国境内的适用性。结果表明,在陆态网基准站坐标的水平分量上,二者的吻合性较好;但在高程分量上,二者的差异性较大,大约有33%的站坐标高程分量的差异超过10mm,这些基准站集中分布在海拔较高的青藏高原地区。采用非差模式解算我国西部海拔较高地区的GNSS测站观测数据时,建议选择最新、精度最高且完全公开的GPT2w/VMF1模型。The applicability of GPT/GMF and GPT2w/VMF1 tropospheric models in China is analyzed based on the observation data from the Crustal Movement Observation Network of China(CMONOC)and the undifferenced ionosphere-free precise point positioning(PPP)experiment.The result shows that those two models are consistent with each other in the horizontal component of CMONOC reference station coordinate,but there is a great difference in the vertical component.The statistical result shows that approximately 33%of the reference stations have a difference of more than 10 mm in the vertical component,and most of these reference stations are located in the Qinghai-Tibet Plateau area with high station heights.Therefore,when using the undifferenced method to calculate GNSS observations from the high altitude areas of western China,it is recommended to select the latest,most accurate and fully disclosed GPT2w/VMF1 model.

关 键 词：全球卫星导航系统 对流层模型 GPT/GMF GPT2w/VMF1 映射函数 

分 类 号：P228[天文地球—大地测量学与测量工程]