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A New Unconstrained Approach to GNSS Atmospheric Water Vapor Tomography
Geophysical Research Letters
A new atmospheric tomographic model totally based on Global Navigation Satellite System (GNSS) observations is proposed and tested against field observations. The method does not require a first guess, does not contain specific constraints on the variability of water vapor density inside the tomographic domain, and is able to produce reasonable results at 6 km horizontal and 500 m vertical resolutions, from short (30 min) GNSS data samples. The inversion method uses the Moore-Penrosedoi:10.1029/2021gl094852 fatcat:rjw22j5mgrfjpjxngz6pntch4e