Determination of humidity of the troposphere by GNSS signals

M. G. Dembelov; Yu. B. Bashkuev; A. V. Loukhnev; O. F. Loukhneva; V. A. Sankov

doi:10.1117/12.2288151

30 November 2017 Determination of humidity of the troposphere by GNSS signals

M. G. Dembelov, Yu. B. Bashkuev, A. V. Loukhnev, O. F. Loukhneva, V. A. Sankov

Proceedings Volume 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 104666N (2017) https://doi.org/10.1117/12.2288151
Event: XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2017, Irkutsk, Russian Federation

Abstract

The lower neutral part of the atmosphere (troposphere) where the GNSS signals are refracted is one of the reasons for the errors in the accuracy of GPS positioning. The total zenith tropospheric delay (ZTD) is the difference between the assumed straight line along which the GPS signal propagates at the speed of light in a vacuum and the actual path from source to receiver. Atmospheric water vapor affects the speed of propagation of GPS signals, and it is characterized by rapid variability as well as a significant mutual influence on the variability of other meteorological parameters. The possibility of determining the content of water vapor in a conventional vertical column to the level of the upper part of the troposphere using the GPS measurement method, as well as using meteorological data is considered. The results of processing primary GPS data give continuous atmospheric data in the form of a total zenith tropospheric delay (ZTD). Data on the “wet” component of the total zenith tropospheric delay (ZWD) can be converted with very high reliability into the integrated water vapor (IWV) data above the observation point.

Citation Download Citation

M. G. Dembelov, Yu. B. Bashkuev, A. V. Loukhnev, O. F. Loukhneva, and V. A. Sankov "Determination of humidity of the troposphere by GNSS signals", Proc. SPIE 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 104666N (30 November 2017); https://doi.org/10.1117/12.2288151

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