测绘通报 ›› 2019, Vol. 0 ›› Issue (5): 35-38,47.doi: 10.13474/j.cnki.11-2246.2019.0145

• 学术研究 • 上一篇    下一篇

利用BDS数据反演大气可降水量及其精度分析

高志钰1,2, 李建章1,2, 刘彦军1,2, 刘江涛1,2, 张健珲1,2   

  1. 1. 兰州交通大学测绘与地理信息学院, 甘肃 兰州 730070;
    2. 甘肃省地理国情监测工程实验室, 甘肃 兰州 730070
  • 收稿日期:2018-07-30 修回日期:2018-11-12 出版日期:2019-05-25 发布日期:2019-06-04
  • 通讯作者: 李建章。E-mail:lijianzhang1975@163.com E-mail:lijianzhang1975@163.com
  • 作者简介:高志钰(1994-),男,硕士生,主要研究方向为高精度GNSS数据处理及应用。E-mail:1714453532@qq.com
  • 基金资助:

    国家自然科学基金(41661091);兰州交通大学优秀平台支持项目(201806)

Research on the accuracy of atmospheric precipitable water vapor with BDS

GAO Zhiyu1,2, LI Jianzhang1,2, LIU Yanjun1,2, LIU Jiangtao1,2, ZHANG Jianhui1,2   

  1. 1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China
  • Received:2018-07-30 Revised:2018-11-12 Online:2019-05-25 Published:2019-06-04

摘要:

随着GAMIT软件版本的不断更新,对BDS数据基线解算已成为可能。本文提出了一种基于GAMIT软件的BDS大气可降水量反演方法,并对利用探空数据计算得到的大气可降水量与GPS数据反演结果进行精度验证。结果表明,通过BDS反演得到的大气可降水量与探空数据计算结果之间的平均相对误差、均方根误差均小于2 mm,相关系数大于0.98;与GPS反演结果之间的平均相对误差、均方根误差均小于3 mm,相关系数大于0.96。BDS反演结果精度较高,基本能够满足气象需要。

关键词: GNSS气象学, GPS, BDS, 大气可降水量, 精度分析

Abstract:

With the continuous update of the GAMIT software version, the processing of BDS data baseline settlement has become possible. In this paper, an inversion method of BDS atmospheric precipitable water vapor based on GAMIT software is proposed, and atmospheric precipitable water vapor calculated by using sounding data and based on the GPS is used to verify the accuracy. The experimental results show that the average relative error and root mean square error between atmospheric precipitable water vapor based on the BDS and calculated by using sounding data are less than 2 mm, and the correlation coefficient is greater than 0.98; the average relative error and root mean square error between atmospheric precipitable water vapor based on the BDS and based on the GPS are less than 3 mm, and the correlation coefficient is greater than 0.96. The BDS inversion results are highly accurate and basically meet the meteorological needs.

Key words: GNSS meteorology, GPS, BDS, atmospheric precipitable water vapor, accuracy analysis

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