Results 61 to 70 of about 1,293 (182)

Determination of Zenith Tropospheric Delay (ZTD) Using CORS GNSS Data, 2016 – 2020 In Lampung

Jurnal Inotera
GNSS satellites transmit signals in the form of electromagnetic waves to ground-based observation stations (receivers). As these signals pass through the atmosphere - particularly the troposphere - they undergo delays and bending due to differences in atmospheric properties.
null Een Lujainatul Isnaini, null Hafiz Mardian Abdussalam, null Redho Surya Perdana, null Akbar Wahyu Nugraha, null Aulia Try Atmojo   +4 more
openaire   +1 more source

VLBI-derived troposphere parameters during CONT08 [PDF]

, 2011
Time-series of zenith wet and total troposphere delays as well as north and east gradients are compared, and zenith total delays (ZTD) are combined on the level of parameter estimates.
Boehm, J., Bolotin, S., Engelhardt, G., Haas, Rüdiger, Heinkelmann, R., Lanotte, R., MacMillan, D. S., Negusini, M., Schuh, H., Skurikhina, E., Titov, O.   +10 more
core   +2 more sources

Correcting Non‐Tidal Atmospheric and Oceanic Loading Displacements at the Observation, Normal Equation, and Parameter Levels in GNSS Data Analysis

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract Non‐tidal loading (NTL) introduces surface deformation on the Earth and increases the variability in coordinates measured by space geodetic techniques. Correcting NTL displacements in Global Navigation Satellite Systems (GNSS) analysis has been discussed extensively, commonly at the parameter level.
Jungang Wang, Kyriakos Balidakis, Henryk Dobslaw, Benjamin Männel, Maorong Ge, Robert Heinkelmann, Harald Schuh   +6 more
wiley   +1 more source

Performance Evaluation of Blind Tropospheric Delay correction Models over Africa [PDF]

, 2015
Tropospheric delay is a major error source in positioning by Global Navigation Satellite Systems (GNSS). Many techniques are available for tropospheric delay mitigation consisting of surface meteorological  models and global empirical models.
Botai, Joel, Combrinck, Ludwig, Isioye, Olalekan Adekunle   +2 more
core   +2 more sources

Benefits of GNSS Local Observations Compared to Global Weather‐Based Models for InSAR Tropospheric Corrections Over Tropical Volcanoes: Case Studies of Piton De La Fournaise and Merapi

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract From repeat‐pass interferometry, tropospheric signals often prevent the detection of ground deformation signals. In recent years, tropospheric corrections derived from global weather‐based models have been implemented in several InSAR processing chains.
F. Albino, S. Gremion, V. Pinel, P. Bouygues, A. Peltier, F. Beauducel, J.‐L. Froger, Agus Budi Santoso   +7 more
wiley   +1 more source

A methodology to compute GPS slant total delays in a numerical weather model [PDF]

, 2012
A numerical algorithm based on Fermat's Principle was developed to simulate the propagation of Global Positioning System (GPS) radio signals in the refractivity field of a numerical weather model.
Bender, Michael, Deng, Zhiguo, Dick, Galina, Heise, Stefan, Shangguan, Ming, Wickert, Jens, Zus, Florian   +6 more
core   +1 more source

A Global Assessment of Diurnal Discontinuities in ERA5 Tropospheric Zenith Total Delays Using 10 Years of GNSS Data

Geophysical Research Letters, Volume 52, Issue 5, 16 March 2025.
Abstract The diurnal cycle of tropospheric Zenith Total Delays (ZTD) is critical for refining tropospheric models and understanding key geophysical and atmospheric processes. The fifth European Centre for Medium‐Range Weather Forecasts reanalysis ERA5, with its unique 1‐hr temporal resolution, provides valuable data for these purposes.
Peng Yuan, Geoffrey Blewitt, Corné Kreemer, Weiping Jiang, Tianjun Liu, Linyu He, Qiang Shan, Kyriakos Balidakis, Harald Schuh, Jens Wickert, Zhiguo Deng   +10 more
wiley   +1 more source

Comparative analysis of blind tropospheric correction models in Ghana

Journal of Geodetic Science, 2021
The impact of the earth’s atmospheric layers, particularly the troposphere on Global Navigation satellite system (GNSS) signals has become a major concern in GNSS accurate positioning, navigation, surveillance and timing applications.
Osah S., Acheampong A. A., Fosu C., Dadzie I.   +3 more
doaj   +1 more source

The STARTWAVE atmospheric water database [PDF]

, 2005
International audienceThe STARTWAVE (STudies in Atmospheric Radiative Transfer and Water Vapour Effects) project aims to investigate the role which water vapour plays in the climate system, and in particular its interaction with radiation.
B. Deuber, B. Deuber, C. Mätzler, D. G. Feist, J. Morland, L. Martin, L. Vuilleumier, N. Kämpfer, P. Jeannet, S. Nyeki, S. Nyeki   +10 more
core   +3 more sources

Effect of phase centre variation on tropospheric delay in PPP‐AR with low‐cost global navigation satellite systems receiver and antenna

IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2737-2748, December 2024.
When PCV corrections are not applied, it is clear that ambiguity resolution fails to improve the accuracy of ZWD estimates. The SEPMX5 receiver consistently outperforms the UBLX9F receiver in scenarios where PCV corrections are applied. Abstract As low‐cost global navigation satellite systems receiver and antenna become increasingly prevalent for water
Jizhong Wu, Xiaoying Wang, Hongyang Ma
wiley   +1 more source