Results 91 to 100 of about 1,227 (193)
Remote SensingImproving the accuracy of zenith tropospheric delay (ZTD) models is an important task. However, the existing ZTD models still have limitations, such as a lack of appropriate vertical adjustment function and being unsuitable for China, which has a complex
Jihong Zhang +6 more
doaj +1 more source
Earth and Space Science, Volume 12, Issue 9, September 2025.Abstract The Global Navigation Satellite System (GNSS) real‐time Precise Point Positioning (PPP) technology offers a highly efficient approach for atmospheric Precipitable Water Vapor (PWV) monitoring and extreme weather warning. However, its retrieval accuracy is limited by the performance of orbit and clock products, as well as the coupling effects ...
Wenliang Gao +4 more
wiley +1 more source
Journal of Geospatial Information Science and Engineering, 2020 The tropospheric delay is an essential source of error for positioning using the Global Navigation Satellite System (GNSS). Scientific applications of GNSS positioning such as the study of earth crust deformation and earthquake prediction require high ...
Syachrul Arief, Andrea Gatti
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Experiments with assimilation of ZTD GPS data
, 2004 Ponencia presentada en: HIRLAM All-Staff Meeting 2004 celebrado en Madrid, del 1 al 3 de marzo de 2004, en el Instituto Nacional de ...
Sánchez Arriola, Jana +2 more
openaire +1 more source
AtmosphereTo accurately estimate Zenith Tropospheric Delay (ZTD) for high-precision positioning of the Global Navigation Satellite System (GNSS), this study proposes a modeling method of ZTD based on the UNB3m model and Kriging spatial interpolation, in which the ...
Huineng Yan +5 more
doaj +1 more source
Atmospheric water vapor maps generations from stochastic interpolation of GNSS Zenith Tropospheric Delays [PDF]
, 2023 LAUREA MAGISTRALEIl monitoraggio degli eventi meteorologici nella moderna meteorologia richiede l'uso di tecniche avanzate, con I sistemi globali di navigazione satellitare (GNSS) che stanno emergendo come una soluzione importante.
ABDELGAFAR, OMAR SAYED MOSTAFA
core
DESIGNATING THE ERROR OF VERTICAL COORDINATE OF AIRCRAFT POSITION IN THE GPS SYSTEM
Scientific Journal of Silesian University of Technology. Series Transport, 2020 This article presents the results of research concerning the determination of an error of the vertical position of an aircraft during a flight, taking into account, the flight altitude and the values of the ZTD tropospheric product.
Małgorzata KIRSCHENSTEIN +2 more
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A New PatchTST-ZTD Forecasting Model Based on Different Global Climates and Its Performance in PPP
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingAccurate modeling of zenith tropospheric delay (ZTD) is crucial for real-time high-precision positioning in global navigation satellite systems (GNSS). Deep learning methods are capable of effectively capturing the complex temporal patterns of ZTD time ...
Zhiping Chen +9 more
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Atmospheric water vapor from GNSS and InSAR. GNSS ZTD validation and InSAR APS calibration procedures and preliminary results [PDF]
, 2018 LAUREA MAGISTRALEI sistemi globali di navigazione satellitare (GNSS), che includono il sistema di posizionamento globale GPS, anche se sviluppati principalmente per il posizionamento, sono ora ampiamente utilizzati per scopi civili, tra cui ...
BONFIGLIO, ALICE
core
Assessment of the PPP-AR Strategy for ZTD and IWV in Africa: A One-Year GNSS Study [PDF]
International audienceWith the increasing demand for near real-time atmospheric water vapor monitoring, this study evaluates the performance of the open-source PRIDE PPP-AR software (version 3.0.5) for retrieving Zenith Total Delay (ZTD) and Integrated ...
Ndiaye, Mapathé +9 more
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