Results 21 to 30 of about 1,084 (164)

Development of a ZTD Vertical Profile Model Considering the Spatiotemporal Variation of Height Scale Factor with Different Reanalysis Products in China

Atmosphere, 2022
Tropospheric delay is one of the key factors that may affect high-precision satellite navigation and positioning and water vapor retrieval performance.
Xin Wang, Ge Zhu, Liangke Huang, Haoyu Wang, Yunzhen Yang, Junyu Li, Ling Huang, Lv Zhou, Lilong Liu   +8 more
doaj   +1 more source

Preliminary signs of the initiation of deep convection by GNSS [PDF]

, 2013
This study reports on the exploitation of GNSS (Global Navigation Satellite System) and a new potential application for weather forecasts and nowcasting.
Brenot, H, Clerbaux, N, De Meutter, Pieter, Deckmyn, A, Delcloo, A, Delobbe, L, Frappez, L, Neméghaire, J, Van Roozendael, M   +8 more
core   +3 more sources

Monitoring Zenithal Total Delays over the three different climatic zones from IGS GPS final products: A comparison between the use of the VMF1 and GMF mapping functions

Geodesy and Geodynamics, 2019
The International GNSS Service (IGS) final products (ephemeris and clocks-correction) have made the GNSS an indispensable low-cost tool for scientific research, for example sub-daily atmospheric water vapor monitoring.
Benachour Labib, Jianguo Yan, Jean-Pierre Barriot, Fangzhao Zhang, Peng Feng   +4 more
doaj   +1 more source

Tropospheric Second-Order Horizontal Gradient Modeling for GNSS PPP

Remote Sensing, 2022
The asymmetric delay has a considerable impact on Global Navigation Satellite Systems (GNSS) Positioning, Navigation and Timing (PNT) applications. In GNSS analyses, the impacts of the asymmetric delay are commonly compensated by using the classical ...
Yaozong Zhou, Yidong Lou, Weixing Zhang, Peida Wu, Jingna Bai, Zhenyi Zhang   +5 more
doaj   +1 more source

Retrieving Precipitable Water Vapor From Shipborne Multi‐GNSS Observations [PDF]

, 2019
©2019. American Geophysical UnionPrecipitable water vapor (PWV) is an important parameter for climate research and a crucial factor to achieve high accuracy in satellite geodesy and satellite altimetry. Currently Global Navigation Satellite System (GNSS)
Ge, Maorong, Gerland, Sebastian, Ramatschi, Markus, Schuh, Harald, Semmling, Maximilian, Wang, Jungang, Wickert, Jens, Wu, Zhilu, Zus, Florian   +8 more
core   +1 more source

On the Definition of the Strategy to Obtain Absolute InSAR Zenith Total Delay Maps for Meteorological Applications

Frontiers in Earth Science, 2020
Atmospheric Phase Screens (APSs) derived from Interferometric Synthetic Aperture Radar (InSAR) observations contain the difference between the tropospheric water-vapor-induced delay of two acquisition epochs, i.e., the slave and the master (or reference)
Agostino N. Meroni, Agostino N. Meroni, Marco Montrasio, Giovanna Venuti, Stefano Barindelli, Alessandra Mascitelli, Marco Manzoni, Andrea V. Monti-Guarnieri, Andrea Gatti, Martina Lagasio, Antonio Parodi, Eugenio Realini, Giulio Tagliaferro   +12 more
doaj   +1 more source

Tropospheric Delay Parameter Estimation Strategy in BDS Precise Point Positioning

Remote Sensing, 2023
Tropospheric delay (TD) parameter estimation is a critical issue underlying high-precision data processing for global navigation satellite systems (GNSSs).
Zhimin Liu, Yan Xu, Xing Su, Cuilin Kuang, Bin Wang, Guangxing Wang, Hongyang Ma   +6 more
doaj   +1 more source

A GPS network for tropospheric tomography in the framework of the Mediterranean hydrometeorological observatory Cévennes-Vivarais (south-eastern France) [PDF]

, 2014
International audienceThe Mediterranean hydrometeorological observatory Cévennes-Vivarais (OHM-CV) coordinates hydrometeorological observations (radars, rain gauges, water level stations) on a regional scale in southeastern France.
Brenot, Hugues, Champollion, Cedric, Collard, Philippe, Doerflinger, Erik, Ducrocq, Véronique, Giroux, Pierre, Masson, Frédéric, Reverdy, Mathieu, van Baelen, Joël, Walpersdorf, Andrea   +9 more
core   +4 more sources

Machine learning-based modelling of zenith wet delay using terrestrial meteorological data in the Brazilian territory [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The Zenith Total Delay (ZTD) is one of the primary error sources derived from the neutral atmosphere associated with the GNSS (Global Navigation Satellite Systems) technique.
A. M. Albuquerque, R. S. Nespolo, A. M. G. Tommaselli, R. P. Martins-Neto, N. N. Imai, D. B. M. Alves, T. A. F. Gouveia, G. O. Jerez   +7 more
doaj   +1 more source

GPS tomography: validation of reconstructed 3-D humidity fields with radiosonde profiles [PDF]

Annales Geophysicae, 2013
Water vapor plays an important role in meteorological applications; GeoForschungsZentrum (GFZ) therefore developed a tomographic system to derive 3-D distributions of the tropospheric water vapor above Germany using GPS data from about 300 ground ...
M. Shangguan, M. Bender, M. Ramatschi, G. Dick, J. Wickert, A. Raabe, R. Galas   +6 more
doaj   +1 more source