GNSS PRECIPITABLE WATER VAPOR

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Published: Dec 29, 2023
Keywords:
Precipitable water vapor GNSS ZTD ZHD ZWD

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Rungsan Bangkuan
Department of Enginering Education, School of Industrial Education and Technology, King Mongkut’s Institute of Technology Ladkrabang
Chollada Pansong
Department of Technical Education, Faculty of Technical Education, Rajamangala University of Technology Thanyaburi
Supawit Nambut
Management of Digital Innovation for Business School of Business Administration, Suvarnabhumi Institute of Technology

Abstract

This review article centers on tropospheric delays in Global Navigation Satellite System (GNSS) positioning and the methodology for estimating Zenith Total Delay (ZTD), which encompasses Zenith Hydrostatic Delay (ZHD) and Zenith Wet Delay (ZWD). The precise modeling and estimation of these delays are paramount for achieving high-precision GNSS positioning and valuable tools for tropospheric monitoring. The process of GNSS Precipitable Water Vapor (PWV) retrieval entails the calculation of ZWD by subtracting ZHD from ZTD. The Weighted Mean Temperature (Tm) stands out as a crucial parameter influencing the calculations of GNSS PWV, and the accuracy of GNSS PWV hinges on the precision of both Tm and ZHD.

Article Details

Issue
Vol. 5 No. 1 (2023): January-December 2023
Section
Review Articles
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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