摘要
为了评估北斗三号全球卫星导航系统(BDS-3)在广州应用于气象的可行性,利用广州市连续运行卫星定位综合服务系统(GZCORS)14个测站2023年6月1—15日的BDS3的观测数据进行大气可降水量(PWV)反演研究:给出地基GNSS反演PWV原理;然后构建区域大气加权平均温度。实验结果表明:BDS-3解算的天顶对流层延迟(ZTD)时间序列变化趋势与全球定位系统(GPS)解算的ZTD基本趋于一致,BDS3-ZTD与GPS-ZTD的相关系数均大于0.97;BDS3-PWV、GPS-PWV与基于欧洲中期天气预报中心第五代大气再分析数据集(ERA5)计算的PWV间相关系数均大于0.87,BDS3-PWV可以很好地反映大气水汽变化情况;以ERA5-PWV为参考值,14个GZCORS站点BDS3-PWV的均方根误差(RMS)平均值为2.98 mm,偏差(Bias)最大值为1.71 mm,最小值为−2.34 mm;GZCORS的BDS-3反演的PWV可以用于气象研究。
In order to evaluate the feasibility of BeiDou-3 global navigation satellite system(BDS-3)for meteorological application in Guangzhou,the paper studied the precipitable water vapor(PWV)inversion by using BDS-3 observations of 14 stations of Guang Zhou continuously operating reference system(GZCORS)from June 1 to 15,2023:the PWV principle of ground-based global navigation satellite system(GNSS)inversion was given.then the regional atmospheric weighted average temperature was constructed.Experimental results showed that the change trend of the zenith tropospheric delay(ZTD)time series of BDS-3 solution would be basically consistent with that of global positioning system(GPS)solution,and the correlation coefficients between BDS3-ZTD and GPS-ZTD would be both greater than 0.97;moreover,the correlation coefficient between BDS3-PWV,GPS-PWV and PWV calculated based on European Centre for Medium-range Weather Forecasts reanalysis v5(ERA5)would be greater than 0.87,and BDS3-PWV could well reflect the change of atmospheric water vapor;furthermore,using ERA5-PWV as the reference value,the mean root mean square(RMS)of BDS3-PWV for 14 GZCORS sites would be 2.98 mm,the maximum Bias 1.71 mm,and the minimum−2.34 mm;in general,the PWV of the BDS-3 inversion of GZCORS could be used for meteorological research.
作者
邹玉学
朱腊腊
詹金瑞
乔德山
阮水聪
ZOU Yuxue;ZHU Lala;ZHAN Jinrui;QIAO Deshan;RUAN Shuicong(Guangzhou Urban Planning&Design Survey Research Institute Co.,Ltd.,Guangzhou 510060/Collaborative Innovation Center for Natural Resources Planning and Marine Technology of Guangzhou/Guangdong Enterprise Key Laboratory for Urban Sensing,Monitoring and Early Warning,Guangzhou 510060,China)
出处
《导航定位学报》
CSCD
北大核心
2024年第6期145-152,共8页
Journal of Navigation and Positioning
基金
广东省城市感知与监测预警企业重点实验室基金项目(2020B121202019)
广州市城市规划勘测设计研究院有限公司科技基金项目(RDI2220201048)。
