A two-step estimation method of troposphere delay with consideration of mapping function errors

被引：0
|
作者：
Fan H. [1 ,2 ]
Sun Z. [2 ,3 ]
Zhang L. [2 ,3 ]
Liu X. [2 ,3 ]
机构：
[1] School of Geospace Information, Information Engineering University, Zhengzhou
[2] Institute of Surveying and Mapping, Xi'an
[3] State Key Laboratory of Geo-Information Engineering, Xi'an
来源：
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2019年 / 48卷 / 03期
基金：
中国国家自然科学基金;
关键词：
European Centre for Medium-Range Weather Forecasts; Mapping function errors; Parameter weighted adjustment; Troposphere delay; Very long baseline interferometry;
D O I：
10.11947/j.AGCS.2019.20180306
中图分类号：
学科分类号：
摘要：
Mapping function errors are usually not taken into consideration, when space geodetic data observed by VLBI, GNSS and some other techniques are utilized to estimate troposphere delay, which could, however, probably bring non-ignorable errors to solutions. After analyzing the variation of mapping function errors with elevation angles based on several-year meteorological data, this paper constructed a model of this error and then proposed a two-step estimation method of troposphere delay with consideration of mapping function errors. The experimental results indicate that the method puted forward by this paper could reduce the slant path delay residuals efficiently and improve the estimation accuracy of wet tropospheric delay to some extent. © 2019, Surveying and Mapping Press. All right reserved.
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收藏
页码：286 / 294
页数：8
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