摘要
为进一步改善精密单点定位(PPP)探测大气可降水量(PWV)的性能,本文提出采用GPS/BDS/GLONASS/Galileo组合PPP进行PWV反演的方法,并利用国内3个MGEX(multi-GNSS experiment)观测站的实测数据,对GPS/BDS/GLONASS/Galileo组合PPP在大气水汽探测方面的性能进行了评估。试验结果表明:相较于GPS PPP、GPS/BDS组合PPP和GPS/GLONASS组合PPP,GPS/BDS/GLONASS/Galileo组合PPP估计天顶对流层延迟(ZTD)的初始化时间分别缩短了33%、26%、20%,且能获得更高精度的ZTD估值和PWV信息,在大气水汽探测方面的性能更优。
In order to further improve the performance of detecting precipitable water vapor(PWV)by using precise point positioning(PPP),this paper proposes a method of retrieval PWV by using GPS/BDS/GLONASS/Galileo combined PPP technology.Based on the measured data of three domestic multi-GNSS experimental project observation stations,the performance of GPS/BDS/GLONASS/Galileo combined PPP in atmospheric water vapor detection was evaluated.The experimental results show that:Compared with GPS PPP,GPS/BDS combination PPP and GPS/GLONASS combination PPP,GPS/BDS/GLONASS/Galileo combination PPP estimates the zenith tropospheric delay(ZTD)initialization time increased by 33%,26%,20%respectively,and it can obtain more accurate ZTD estimates and PWV information,and has better performance in atmospheric water vapor detection.
作者
李宏达
张显云
廖留峰
李婷
聂士海
LI Hongda;ZHANG Xianyun;LIAO Liufeng;LI Ting;NIE Shihai(College of Mining,Guizhou University,Guiyang 550025,China;Guizhou Ecological Meteorology and Remote Sensing Center,Guiyang 550002,China;Rizhao City Ruihang Geographic Information Engineering Co.,Ltd.,Rizhao 276000,China)
出处
《测绘通报》
CSCD
北大核心
2020年第6期63-66,98,共5页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41701464,41901225)
贵州省科学技术基础研究计划([2017]1026,[2017]1054,[2016]1028)
贵州省科技支撑计划([2017]2593)
贵州大学研究生重点课程建设(ZDKC[2015]029)。
