气象2017，Vol.43Issue(12)：1547-1553,7.DOI:10.7519/j.issn.1000-0526.2017.12.010
概略坐标对GPS PWV解算的影响
The Effect of Approximate Coordinates on GPS PWV
摘要
Abstract
With the software of GAMIT 10.6 and the GPS observation data at Nanchang Station,a set of 13 tests about the influence of approximate coordinate on the solving of GPS PWV are carried out.The results show that when the distance between the approximate coordinate and actual coordinate is less than 60 m,the approximate coordinate has weak effect on GPS PWV.But when the distance exceeds 60 m,the variation of approximate coordinate significantly affects the solving of GPS PWV.The relative error of baseline and the standard deviation between GPS PWV and sounding PWV increase rapidly,while the days of successful solving GPS PWV decrease rapidly with the increasing of the distance (when the distance ≥120 m,the day is 0).Meanwhile,NRMS (normalized root mean square) and the correlation between GPS PWV and sounding PWV also has a significant decrease when the distance is more than 60 m.Additionally,the effects of variation of approximate coordinate on the relative error of baseline,NRMS,and the accuracy of GPS PWV only occur at local station.关键词
GPS PWV/概略坐标/基线相对误差/均方根残差(NRMS)Key words
GPS PWV/approximate coordinate/relative error of baseline/normalized root mean square (NRMS)分类
天文与地球科学引用本文复制引用
邹海波,易雪婷,单九生,喻迎春..概略坐标对GPS PWV解算的影响[J].气象,2017,43(12):1547-1553,7.基金项目
公益性行业(气象)科研专项(GYHY201506002),灾害天气国家重点实验室开发课题(2016LASW-N11)和江西省科技厅项目(20171BBG70004)共同资助 （气象）
