陈发德,刘立龙,黄良珂,黎峻宇,秦旭元

• 1:广西矿冶与环境科学实验中心
• 2:桂林理工大学测绘地理信息学院
• 3:广西空间信息与测绘重点实验室

摘要(Abstract)：

针对广西地区探空站稀少,难以获得精确的T_m问题,GGOS atmosphere提供了利用ECMWF的相关资料计算而得到的时间分辨率为6h(UTC 00:00:00,06:00:00,12:00:00,18:00:00)、空间分辨率为2.5°×2°的全球T_m格网数据可以在没有气象数据的情况下获得较高时空分辨率的T_m,该文利用GGOS atmosphere T_m格网数据对广西地区4个探空站插值T_m,并用无线电探空数据计算的T_m检验其精度;对误差进行分析后,选取最优小波基与尺度对其残差去噪,利用去噪后得到的曲线建立T_m的改正模型。实验结果表明,插值T_m经基于小波去噪的模型改正后,其RMSE为1.29K;Bevis模型的RMSE为10.71K;GPT2_1W模型的RMSE为3.56K;改正模型精度优于传统模型,可以达到地基GPS反演GNSS-PWV的精度要求。

关键词(KeyWords)： 加权平均温度;小波去噪;插值;精度;GNSS-PWV

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41541032);; 广西空间信息与测绘重点实验室资助课题项目(14-045-24-03,14-045-24-10);; 广西自然科学基金项目(2015GXNSFAA139230);; 研究生教育创新计划项目(YCSZ2015163)

作者(Author): 陈发德,刘立龙,黄良珂,黎峻宇,秦旭元

DOI: 10.16251/j.cnki.1009-2307.2018.04.004

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