Artificial Satellites, 2021 The precise point positioning (PPP) method has become more popular due to powerful online global navigation satellite system (GNSS) data processing services, such as the Canadian Spatial Reference System-PPP (CSRS-PPP).
Omer Faruk Atiz, I. Kalaycı
semanticscholar +2 more sources
GPS – Zenith Total Delay assimilation in different resolution simulations of a heavy precipitation event over southern France [PDF]
Advances in Science and Research, 2017 The aim of this study is to investigate the different pathways of the interaction between an improved atmospheric moisture distribution by Data Assimilation (DA) of Global Positioning System Zenith Total Delays (GPS-ZTD) on the simulation of a ...
A. Caldas-Álvarez, S. Khodayar, O. Bock
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Noise characteristics in Zenith Total Delay from homogeneously reprocessed GPS time series [PDF]
, 2016 . Zenith Total Delay (ZTD) time series, derived from the re-processing of Global Positioning System (GPS) data, provide valuable information for the evaluation of global atmospheric reanalysis products such as ERA-Interim.
A. Klos +5 more
semanticscholar +4 more sources
Regional zenith tropospheric delay prediction using DBO-optimized CNN-LSTM with multihead attention. [PDF]
Sci RepZenith Total Delay (ZTD) is integral to applications such as atmospheric water vapor inversion and precise positioning in the Global Navigation Satellite System (GNSS).
Yang R, Yang X, Xie S, Yu X.
europepmc +2 more sources
An Interferometric Synthetic Aperture Radar Tropospheric Delay Correction Method Based on a Global Navigation Satellite System and a Backpropagation Neural Network: More Suitable for Areas with Obvious Terrain Changes [PDF]
Sensors, 2023 Atmospheric delay correction remains a major challenge for interferometric synthetic aperture radar (InSAR) technology. In this paper, we first reviewed several commonly used methods for tropospheric delay correction in InSAR.
Liangcai Qiu +5 more
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Variability and accuracy of Zenith Total Delay over the East African tropical region
Advances in Space Research, 2019 The Global Navigation Satellite System (GNSS) can be used to derive accurately the Zenith Tropospheric Delay (ZTD) under all-weather conditions. The derived ZTDs play a vital role in climate studies, weather forecasting and are operationally assimilated ...
Richard Cliffe Ssenyunzi +6 more
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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 SciencesThe 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 +7 more
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Precipitable Water Vapour and Zenith Total Delay time series and models over Slovakia and vicinity
Contributions to Geophysics and Geodesy, 2010 More than 50 permanent GNSS (Global Navigation Satellite Systems) stations are processed continually within the Central European Permanent Network. Zenith Total Delay (ZTD), one of the processing outputs, reflects a delay of the GNSS signal caused by ...
Miroslava IGONDOVÁ, Dušan CIBULKA
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Assimilation of ground-based GNSS data using a local ensemble Kalman filter [PDF]
Scientific ReportsTropical cyclones become increasingly nonlinear and dynamically unstable in high-resolution models. The initial conditions are typically sub-optimal, leaving scope to improve the accuracy of forecasts with improved data assimilation.
Changliang Shao, Lars Nerger
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Assessing BeiDou-3 PPP-B2b with Signal-in-Space Ranging Error (SISRE) and Its Performances in Positioning and ZTD Estimation [PDF]
SensorsThe PPP-B2b service of BeiDou-3 enables real-time precise point positioning (RT-PPP) through correction information contained in B2b signals, circumventing the reliance on ground-based network infrastructures.
Guangxing Wang +6 more
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