Results 91 to 100 of about 1,086,410 (154)

Multi-GNSS-Weighted Interpolated Tropospheric Delay to Improve Long-Baseline RTK Positioning. [PDF]

Sensors (Basel), 2022
Mirmohammadian F, Asgari J, Verhagen S, Amiri-Simkooei A.   +3 more
europepmc   +1 more source

Spatial interpolation of regional PM_2.5 concentrations in China during COVID-19 incorporating multivariate data. [PDF]

Atmos Pollut Res, 2023
Wei P, Xie S, Huang L, Liu L, Cui L, Tang Y, Zhang Y, Meng C, Zhang L.   +8 more
europepmc   +1 more source

GPS zenith delay sensitivity evaluated from high-resolution numerical weather prediction simulations of the 8–9 September 2002 flash flood over southeastern France

, 2006
International audienceEstimations of zenith total delays (ZTD) were obtained during postprocessing of a high-resolution (2.4 km) nonhydrostatic atmospheric model (Méso-NH).
Caumont, Olivier, Walpersdorf, Andrea, Champollion, Cedric, Ducrocq, Véronique, Brenot, Hugues   +4 more
core   +1 more source

A Self-Supervised Uncertainty-Hybrid Machine Learning Approach for Modeling Tropospheric Zenith Wet Delay

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Zenith wet delay (ZWD) is one of the major sources of errors in the Global Navigation Satellite System (GNSS) positioning. Existing machine learning (ML) based ZWD models have limitations in their generalization capabilities and in modeling the high ...
Mohamed H. Sharouda, Weixing Zhang, Zhixiang Mo, Mohamed M. Elisy, Hongxing Sun, Mohamed Hosny, Yidong Lou   +6 more
doaj   +1 more source

Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans

, 2016
Water vapour (WV) plays a fundamental role in several weather processes that deeply influence human activities. Satellite based radiometers, Ground based Global Navigation Satellite Systems (GNSS) and Numerical Weather Models (NWM) permit to obtain ...
Calori, A., COLOSIMO, GABRIELE, Mackern, M. V., CRESPI, Mattia Giovanni   +3 more
core   +1 more source

The Implementation of Precise Point Positioning (PPP): A Comprehensive Review. [PDF]

Sensors (Basel), 2023
Elsheikh M, Iqbal U, Noureldin A, Korenberg M.   +3 more
europepmc   +1 more source

Investigating Effects of Usage of Zenith Tropospheric Wet Delay Models on Positioning Accuracy

, 2017
Global Navigation Satellite System (GNSS) is actively being used for various purposes such asengineering studies, deformation measurements, meteorological predictions, navigation. The methodwould be used depends on work to be applied.
Soycan, Metin, Gürtürk, Mert, Erdem, Çağan   +2 more
core  

Ingestion of GNSS-Derived ZTD and PWV for Spatial Interpolation of PM_2.5 Concentration in Central and Southern China. [PDF]

Int J Environ Res Public Health, 2021
Wei P, Xie S, Huang L, Liu L.
europepmc   +1 more source

Spectral analysis of GNSS zenith wet delay and microwave radiometer precipitable water during FESSTVaL Lindenberg 2021: a multi-scale observational test of horizontal heterogeneity sensitivity

. Every Global Navigation Satellite System (GNSS) station estimates a zenith wet delay (ZWD), a direct measure of the water vapour integrated above it.
Nishant Pawar, Xavier Calbet, Zhiguo Deng, Gaël Kermarrec   +3 more
core   +1 more source

Ionospheric and Neutrosphere Impacts on Multi-GNSS Kinematic PPP During Geomagnetic Storms: A Global Study. [PDF]

Sensors (Basel)
Zaupa JPV, De Souza FTL, Ferreira LG, Yamashiro HY, Gouveia TAF, Alves DBM, Monico JFG, Pereira VAS, Setti PT.   +8 more
europepmc   +1 more source