Comparative analysis of real-time precise point positioning zenith total delay estimates [PDF]
GPS Solutions, 2014 The continuous evolution of global navigation satellite systems (GNSS) meteorology has led to an increased use of associated observations for operational modern low-latency numerical weather prediction (NWP) models, which assimilate GNSS-derived zenith total delay (ZTD) estimates. The development of NWP models with faster assimilation cycles, e.g., 1-h
AHMED, Furqan +5 more
openaire +5 more sources
A new zenith hydrostatic delay model for real-time retrievals of GNSS-PWV [PDF]
Atmospheric Measurement Techniques, 2021 The quality of the zenith hydrostatic delay (ZHD) could significantly affect the accuracy of the zenith wet delay (ZWD) of the Global Navigation Satellite System (GNSS) signal, and from the ZWD precipitable water vapor (PWV) can be obtained.
L. Li +17 more
doaj +2 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 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
doaj +2 more sources
Impact of the variational assimilation of ground-based GNSS zenith total delay into AROME-Morocco model [PDF]
Tellus: Series A, Dynamic Meteorology and Oceanography, 2020 The impact of assimilating zenith total delay (ZTD) observations from the Moroccan ground-based Global Navigation Satellite System (GNSS) network into the high-resolution operational model AROME-Morocco (2.5 km) is assessed over one month.
Fatima Zahra Hdidou +5 more
doaj +2 more sources
Artificial Satellites, 2021 Abstract 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, Ibrahim Kalayci
openaire +2 more sources
Deep Learning Approaches for Zenith Total Delay Estimation
Zenith Total Delay (ZTD) is a crucial parameter for understanding the effects of atmospheric conditions on satellite signals, constituting a fundamental aspect of precision positioning and atmospheric modeling applications. Traditional methods for ZTD estimation, including GNSS observations, numerical weather prediction models, and interpolation ...
Nihal Tekin Ünlütürk, Mehmet Bak
openaire +3 more sources
An Evaluation of the Accuracy of Real-Time Zenith Total Delay Estimates [PDF]
, 2013 The continuous evolution of Global Navigation Satellite Systems (GNSS) meteorology has lead to an increased use of associated observations for operational meteorology worldwide. In order to enhance short-term weather forecasts meteorological institutions use modern low-latency Numerical Weather Prediction (NWP) models which assimilate GNSS-derived ...
AHMED, Furqan +3 more
openaire +2 more sources
Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations [PDF]
, 2023 Edited by Aleksandra Nina, Snežana Dragović, and Dejan ...
Vasilić, Violeta +3 more
openaire +2 more sources
On the Properties of Zenith Total Delay Time Series from Reprocessed GPS Solutions [PDF]
, 2016 R-AGR-0376 - IRP15 - SGSL (20150501-20170430) - TEFERLE Felix ...
Klos, Anna +5 more
openaire +2 more sources
Measurement report: Can zenith wet delay from GNSS “see” atmospheric turbulence? Insights from case studies across diverse climate zones [PDF]
Atmospheric Chemistry and PhysicsGlobal navigation satellite system (GNSS) microwave signals are nearly unaffected by clouds but are delayed as they travel the troposphere. The hydrostatic delay accounts for approximately 90 % of the total delay and can be modelled well as a function of
G. Kermarrec +3 more
doaj +3 more sources