摘要
在分析GAMIT水汽解算方案特点的基础上,利用云南6站地基GPS水汽探测资料,进行了不同解算方案计算结果的分析,并与GPS探空资料的PWV值进行比较,结果显示:不同解算方案对云南地基GPS水汽反演结果有显著的影响;在进行本地化后,GAMIT软件包对云南GPS水汽反演的精度有显著提高;不同季节的云南地基GPS反演水汽值与高精度探空水汽值的数值和变化趋势极为一致,二者的均方根差小于2mm,说明该解算方案的地基GPS水汽反演结果可用.
Based on the analysis of the characteristics of atmospheric water vapor calculation scheme processed by GAMIT software, the results generated by two kinds of different calculation schemes are comparatively analyzed by using the ground-based GPS data of 6 meteorological stations in Yunnan province. The analysis and accuracy test are conducted by comparison with the radiosonde data. The results show that the two calculation schemes are quite dif- ferent in the retrieved water vapor results. The precision of GPS water vapor is obviously improved after adopting the local model. The water vapor values derived from GPS are roughly in agreement with the radiosonde observations with a mean-root-square error less than 2mm, and the changing trends of them are basically the same. The study re- vealed that the retrieved water vapor generated by the ground-based GPS calculation scheme in the local model can be used in research business.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2013年第2期106-112,共7页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
公益性行业(气象)科研专项(GY-HY201006054
GYHY201006009)
国家自然科学基金(41275095)
云南省省院省校科技合作计划(2006YX39)
