Results 11 to 20 of about 5,886 (223)
A New Global ZTD Forecast Model Based on Improved LSTM Neural Network
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingZenith tropospheric delay (ZTD), consisting of zenith hydrostatic delay (ZHD) and zenith wet delay (ZWD), is a significant contributor to errors in precise positioning using the global navigation satellite system (GNSS) precise point positioning (PPP ...
Lin He +7 more
doaj +2 more sources
A Refined Spatiotemporal ZTD Model of the Chinese Region Based on ERA and GNSS Data
Remote SensingEmpirical tropospheric models can improve the performance of GNSS precise point positioning (PPP) by providing a priori zenith tropospheric delay (ZTD) information.
Yongzhao Fan +3 more
doaj +2 more sources
Fusion-Based Regional ZTD Modeling Using ERA5 and GNSS via Residual Correction Kriging
Remote SensingZenith Tropospheric Delay (ZTD) and its associated atmospheric water vapor information constitute essential environmental variables for Earth observation (EO)-based atmospheric monitoring and environmental variable retrieval.
Yang Cai +6 more
doaj +2 more sources
Assessing BeiDou-3 PPP-B2b with Signal-in-Space Ranging Error (SISRE) and Its Performances in Positioning and ZTD Estimation. [PDF]
Sensors (Basel)The 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.
Wang G +6 more
europepmc +2 more sources
Geosystems and Geoenvironment, 2023 Recent studies on the application of Zenith Tropospheric Delay (ZTD) in meteorology and geodesy have shown improved accuracy with the use of locally estimated ZTD compared to Global ZTD.
Ifechukwu Ugochukwu Nzelibe +1 more
doaj +1 more source
Advanced Temperature Design for Dynamic Performance Enhancement of PEMFCs Under High Current Density (HCD). [PDF]
Adv Sci (Weinh)This study presents an innovative temperature difference (TD) design with an in‐plane gradient to optimize cooling channels in proton exchange membrane fuel cells (PEMFCs) under high current density (HCD) loading. The positive temperature difference (PTD) design improves dynamic response by enhancing hydration upstream and mitigating flooding ...
Cai F, Cai S, Tu Z, Chan SH.
europepmc +2 more sources
A Novel Method for Monitoring Tropical Cyclones’ Movement Using GNSS Zenith Tropospheric Delay
Remote Sensing, 2023 Precipitable water vapor (PWV) is an important meteorological factor for predicting extreme weather events such as tropical cyclones, which can be obtained from zenith tropospheric delay (ZTD) by using a conversion.
Dajun Lian +8 more
doaj +1 more source
Quality control of SIRGAS ZTD products
Journal of Geodetic Science, 2022 AbstractThe SIRGAS-CON network currently has more than 450 continuous GNSS stations, and it is used for geodetic purposes. In atmospheric studies, it is used for ionospheric monitoring and for the estimation of zenith tropospheric delays (ZTDs). From the Neutral Atmosphere Analysis Center of SIRGAS, Centro de Ingeniería Mendoza Argentina, the final ...
María Virginia Mackern +3 more
openaire +3 more sources
Geoid, 2021 Global Navigation Satellite System (GNSS) semakin dikembangkan sebagai sistem penginderaan jauh atmosfer, salah satunya melalui perhitungan Zenith Tropospheric Delay (ZTD).
Norma Aji Cemara Mannani +1 more
doaj +1 more source
GNSS meteorology and tropospheric parameteres investigation [PDF]
Geodetski Glasnik, 2015 Troposphere plays crucial role for geodetic comunity, which can primarly be seen in its influence on GNSS observations. At the same time, troposhpere is the place where almost all hidrometeorological phenomena that effect our everyday life occure ...
Alma Tabaković +2 more
doaj +1 more source