Tomographie troposphérique par réseau GNSS dense sur le site du Mans : mise en œuvre et premières analyses

Résumé fourni par la source

Analysis of the water vapor in the atmosphere has long been hampered by lack of suitable measurement tools to meet the high spatial and temporal variability of the water vapor. In their research to improve the accuracy of GNSS for positioning applications, researchers have created this tool. Indeed, for several decades, with increased precision thanks to the integration of atmospheric delays in the calculation chains, GNSS systems have become essential tools in sciences like physics of the atmosphere or meteorology. The subject of this thesis is based on a meteorological application of GNSS systems, ie tropospheric tomography which is to return the 3D field of water vapor in the troposphere. The proposed study aims to demonstrate the concepts of tropospheric tomography with a dense GNSS network over the area of the urban community of Le Mans. This work is also intended to streamline the methods of implementation for the installation of the GNSS network to the use of existing software calculations. The experiment of a complete calculation process allowed to provide a critical contribution to current methods and tools and to consider improvements.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.