000193739 001__ 193739
000193739 003__ CZ-ZdVUG
000193739 005__ 20190618110711.0
000193739 041__ $$aeng
000193739 040__ $$aABC039$$bcze
000193739 1001_ $$aDouša, Jan
000193739 24510 $$aA two-stage tropospheric correction model combining data from GNSS and numerical weather model
000193739 300__ $$a13 stran
000193739 5203_ $$aWe have developed a new concept for providing tropospheric augmentation corrections. The two-stage correction model combines data from a Numerical Weather Model (NWM) and precise ZTDs estimated from Global Navigation Satellite System (GNSS) permanent stations in regional networks. The first-stage correction is generated using the background NWM forecast only. The second-stage correction results from an optimal combination of the background model data and GNSS (near) real-time tropospheric products. The optimum correction is achieved when using NWM for the hydrostatic delay modeling and for vertical scaling, while GNSS products are used for correcting the non-hydrostatic delay. The method is assessed in several variants including study of the combination of NWM and GNSS data, spatial densification of the original NWM grid, and GNSS ZTD densification using tropospheric linear horizontal gradients. The first-stage correction can be characterized by overall accuracy of about 10 mm for ZTD (1-sigma). The second-stage correction supported with GNSS tropospheric products improved the first-stage correction by a factor of 2–4 in terms of the ZTD accuracy and by a factor of 2.5 in terms of its spatio-temporal stability.
000193739 655_4 $$ačlánky v odborných časopisech
000193739 7001_ $$aEliaš, Michal
000193739 7001_ $$aVáclavovic, Pavel
000193739 7001_ $$aEben, Kryštof
000193739 7001_ $$aKrč, Pavel
000193739 7730_ $$92018$$dSpolková republika Německo,2018.$$g22. (3), 13s.$$tGPS Solutions$$x1080-5370
000193739 85642 $$ahttps://www.rvvi.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F18%3AN0000061%21RIV19-MSM-00025615
000193739 85642 $$uhttps://link-springer-com.ezproxy.techlib.cz/article/10.1007/s10291-018-0742-x
000193739 910__ $$aABC039$$bsig
000193739 980__ $$aclanky_vugtk
000193739 985__ $$adousa
000193739 985__ $$ariv
000193739 985__ $$autvar24
000193739 985__ $$aelias
000193739 985__ $$avaclavovic