标题：Applicability Analysis of Troposphere Mapping Functions in China
作者：Liu, Zong-qiang; Dang, Ya-min; Yang, Qiang; Wang, Hu
作者机构：[Liu, Zong-qiang] Shandong Univ Sci & Technol, Qingdao 266590, Shandong, Peoples R China.; [Liu, Zong-qiang; Dang, Ya-min; Yang, Qiang; Wang, Hu] Ch 更多
会议名称：8th China Satellite Navigation Conference (CSNC)
会议日期：MAY 23-25, 2017
来源：CHINA SATELLITE NAVIGATION CONFERENCE (CSNC) 2017 PROCEEDINGS, VOL III
关键词：Mapping functions; China; Applicability
摘要：The tropospheric mapping function has a direct influence on the tropospheric delay correction. This paper introduces three models: NMF, VMF1 and GMF. Based on the data of the CORS station located in China and some of the surrounding IGS station and combined with ground-based GPS meteorological technology, we can through GAMIT/GLOBK the wet and dry delay of troposphere, and the delay error is obtained. According to the data, the applicability of the three mapping functions in China is analyzed. Results showed that: When the baseline is calculated in China, it is shown that the three mapping functions have higher accuracy in the horizontal direction, and the accuracy is relatively poor in the vertical direction. With the increase of the cutoff angle, the errors of the three mapping functions in N, E and U are gradually increased, and the cutoff angle of 10 degrees is recommended. The model of GMF and NMF showed a certain latitude correlation and VMF1 showed a strong randomness. The accuracy of NMF is obviously lower than GMF and VMF1, and the mean delay deviation of the VMF1 is less than GMF. The model of VMF1 is recommended in China and GMF is used as a backup function.