摘要
为了提高GNSS/MET水汽数据解算的精度,选取水汽含量丰沛且四季变化明显的两广地区为研究对象。通过对广东、广西两省四个地基GNSS水汽站点质量控制算法的研究分析,发现造成水汽解算误差的主要原因是观测数据的质量问题以及解算方法中参数、网型的选择等。根据解算误差来源的不同,采取相应措施改进解算方法,使得水汽结果更加精确。研究结果表明：质控后的水汽解算结果比质控前的一致性有所提高,随机误差得到了改善,精度从4~7mm提高至2mm左右。
In order to improve the accuracy of the GNSS/MET data solution,the Guangdong and Guangxi region are selected for the study because of the abundant water vapor content and the significantly changing seasons.By studying the methods of the quality control for GNSS/MET water vapor retrieval,it found that the main cause of water vapor solver error is the quality of observational data,solution method for parameters,network type selection and so on.According to different sources of error solving and take appropriate measures to improve the solver methods,the results will be more accurate.It shows that the consistency of the results increased after vapor solutions QC.Random error is reduced and the accuracy is improved from 4-7mm to about 2mm.
出处
《气象水文海洋仪器》
2015年第4期14-19,共6页
Meteorological,Hydrological and Marine Instruments
关键词
地基GNSS
质量控制
算法研究
两广地区
ground
GNSS
quality control
algorithm research
Guangdong and Guangxi region
