000196041 001__ 196041
000196041 003__ CZ-ZdVUG
000196041 005__ 20201203111144.0
000196041 041__ $$aeng
000196041 040__ $$aABC039$$bcze
000196041 1001_ $$aDouša, Jan
000196041 24510 $$aImproving GNSS Zenith Wet Delay Interpolation by Utilizing Tropospheric Gradients: Experiments with a Dense Station Network in Central Europe in the Warm Season
000196041 300__ $$a15 stran
000196041 5203_ $$aThe Benchmark data set collected within the European COST Action ES1206 has aimed to support the development and validation of advanced Global Navigation Satellite System (GNSS) tropospheric products, in particular high-resolution zenith delays and tropospheric gradients. In this work we utilize this unique data set to show that the interpolation of GNSS Zenith Wet Delays (ZWDs) can be improved by utilizing tropospheric gradients. To do this we first prove the concept with simulated observations, that is, zenith delays and tropospheric gradients derived from a Numerical Weather Model. We show how tropospheric gradients can be converted to ZWD gradients. Then the ZWD gradients together with the ZWDs at selected reference stations are used in an inverse distance weighting interpolation scheme to estimate the ZWD at some target station. For a station configuration with an average station distance of 50 km in Germany and a period of two months (May and June 2013), we find an improvement of 20% in interpolated ZWDs when tropospheric gradients are taken into account. Next, we replace the simulated by real observations, that is, zenith delays and tropospheric gradients from a Precise Point Positioning (PPP) solution provided with the G-Nut/Tefnut analysis software. Here we find an improvement of 10% in interpolated ZWDs when tropospheric gradients are taken into account.
000196041 655_4 $$ačlánek v odborném časopise
000196041 7001_ $$aVáclavovic, Pavel
000196041 7730_ $$92019$$dBasel:Molecular Diversity Preservation International,2019.$$g11. (6), 15 s.$$tRemote Sensing$$x2072-4292
000196041 8564_ $$uhttps://www.mdpi.com/2072-4292/11/6/674
000196041 85642 $$ahttps://www.rvvi.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F19%3AN0000057%21RIV20-MSM-00025615
000196041 910__ $$aABC039
000196041 980__ $$aclanky_vugtk
000196041 985__ $$adousa
000196041 985__ $$ariv
000196041 985__ $$autvar24
000196041 985__ $$avaclavovic