Results 231 to 240 of about 2,145,064 (260)

A global zenith tropospheric delay model with ERA5 and GNSS-based ZTD difference correction

GPS Solutions, 2023
Hao Li, G. Zhu, Qi Kang, Liangke Huang, Hu Wang   +4 more
semanticscholar   +1 more source

TropNet: a deep spatiotemporal neural network for tropospheric delay modeling and forecasting

Journal of Geodesy, 2023
Cuixian Lu, Yuxin Zheng, Zhilu Wu, Yushan Zhang, Qiuyi Wang, Zhuo Wang, Yuxuan Liu, Yaxin Zhong   +7 more
semanticscholar   +1 more source

Assessment of BeiDou’s Tropospheric Model (IGGtrop) for tropospheric delay correction in northern hemisphere

Journal of Applied Geodesy, 2019
Abstract Satellite navigation systems face different types of errors that affect the positioning accuracy. The tropospheric delay considers one of the major sources of error for the transmitted signal that could face a tropospheric delay of over 2 m at zenith and 20 m at lower satellite elevation angles. A positioning error of 10 m could
openaire   +1 more source

A refined zenith tropospheric delay model for Mainland China based on the global pressure and temperature 3 (GPT3) model and random forest

GPS Solutions, 2023
Junyu Li, Qinglan Zhang, Lilong Liu, Yibin Yao, Liangke Huang, Fade Chen, Lv Zhou, Bao Zhang   +7 more
semanticscholar   +1 more source

Real-time tropospheric delay map retrieval using sparse GNSS stations

GPS Solutions, 2023
Zheng Du, Qingzhi Zhao, Yibin Yao, Hang Zhu   +3 more
semanticscholar   +1 more source

Modeling tropospheric delays for space geodetic techniques

2017
Elektromagnetische Wellen werden auf ihrem Signalweg durch die neutrale Atmosph re oder Troposph re verz gert und gekr mmt. Da es keine M glichkeit gibt, diese troposph rische Laufzeitverz gerung mit ausreichender Genauigkeit direkt zu messen, muss sie stattdessen mittels Daten aus anderen Quellen modelliert werden.
openaire   +1 more source

Real-time GNSS tropospheric delay estimation with a novel global random walk processing noise model (GRM)

Journal of Geodesy, 2023
Zhilu Wu, Cuixian Lu, Yuxuan Tan, Yuxin Zheng, Yang Liu, Yanxiong Liu, Ke Jin   +6 more
semanticscholar   +1 more source

Prediction of troposphere wet delay

Journal of Applied Geodesy, 2011
Ahmed El-Mowafy, Johnny Lo
openaire   +1 more source

An improved global grid model for calibrating zenith tropospheric delay for GNSS applications

GPS Solutions, 2022
Liangke Huang, G. Zhu, H. Peng, Lilong Liu, Chao Ren, Weiping Jiang   +5 more
semanticscholar   +1 more source

Tropospheric slant delays interpolating multiple mapping functions

Representing the tropospheric slant delays in geodesy can get complicated due to the inhomogeneity and fast variations of the weather. Mapping functions are the most common used tool for this task, but due to the lack of information when calculating the parameters of the mapping functions, relevant errors could appear.
Angel Navarro Trastoy, Ghodsiyeh Motlagh Zadeh, Maksym Vasiuta, Patrick Dumitraschkewitz, Torsten Mayer-Gürr, Heikki Jarvinen   +5 more
openaire   +1 more source