Results 41 to 50 of about 223,361 (218)

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, L. Li, S. Wu, S. Wu, K. Zhang, K. Zhang, K. Zhang, X. Wang, W. Li, W. Li, Z. Shen, Z. Shen, D. Zhu, D. Zhu, Q. He, Q. He, M. Wan, M. Wan   +17 more
doaj   +1 more source

Kinematic Zenith Tropospheric Delay Estimation with GNSS PPP in Mountainous Areas

Sensors, 2021
The use of global navigation satellite systems (GNSS) precise point positioning (PPP) to estimate zenith tropospheric delay (ZTD) profiles in kinematic vehicular mode in mountainous areas is investigated.
Paul Gratton, Simon Banville, Gérard Lachapelle, Kyle O’Keefe   +3 more
doaj   +1 more source

Impact of GNSS zenith total delay assimilation on the numerical weather model tropospheric delay parameters

, 2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Zus, Florian, Dogan, Ali Hasan, Thundathil, Rohith, Dick, Galina, Wickert, Jens   +4 more
openaire   +3 more sources

GNSS-based zenith total delays observed during the MOSAiC Campaign 2019-2020

, 2021
During the transpolar drifting campaign MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) of RV Polarstern (AWI, 2017), GNSS was used among other techniques to monitor variations in atmospheric water vapor. This dataset comprises the estimated antenna position for each hour, the derived zenith total delays including their ...
Männel, B., Zus, F.
openaire   +3 more sources

Precipitable Water Vapour Estimation from GNSS Observations: Methodology and Evaluation during a High-Precipitation Month in Santa Maria (RS) [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Precipitable Water Vapour (PWV) represents the total amount of water vapour contained in a vertical column of the atmosphere that is available for precipitation.
A. M. Albuquerque, T. A. F. Gouveia, D. B. M. Alves   +2 more
doaj   +1 more source

Regional Tropospheric Correction Model from GNSS–Saastamoinen–GPT2w Data for Zhejiang Province

Atmosphere, 2023
Tropospheric delay models based on GNSS observations are essential for studying tropospheric changes. However, the uneven distribution of GNSS stations reduces the accuracy of GNSS tropospheric delay models in remote areas.
Chaoqian Xu, Yiqun Zhu, Xingyu Xu, Jian Kong, Yibin Yao, Junbo Shi, Xiulong Li   +6 more
doaj   +1 more source

Estimation of Precipitable Water Vapor Using the GPS [PDF]

Journal of Astronomy and Space Sciences, 1999
The radio waves transmitted from GPS satellites is delayed by the troposphere as they propagate to Earth-based GPS receivers. The troposphere delay is usually divided into two parts, the dry delay due to the atmospheric gases and the wet delay due to the
Yong-Jin Moon, Kyu-Hong Choi, Pil-Ho Park   +2 more
doaj  

Least-Squares Spectral and Coherency Analysis of the Zenith Total Delay Time Series at SuomiNet Station SA56 (UNB2)

International Association of Geodesy Symposia, 2020
Zenith Total Delay (ZTD) from ground-based Global Navigational Satellite Systems (GNSS) observations plays an important role in meteorology. It contains information about the troposphere due to the interactions that GNSS signals have with the atmosphere ...
A. O. Mayaki, Marcelo C. Santos, T. Nikolaidou   +2 more
semanticscholar   +1 more source

A Combined IR-GPS Satellite Analysis for Potential Applications in Detecting and Predicting Lightning Activity

Remote Sensing, 2020
Continuous estimates of the vertical integrated precipitable water vapor content from the tropospheric delay of the signal received by the antennas of the global positioning system (GPS) are used in this paper, in conjunction with the measurements of the
Leo Pio D’Adderio, Luigi Pazienza, Alessandra Mascitelli, Alessandra Tiberia, Stefano Dietrich   +4 more
doaj   +1 more source

GPS tomography: validation of reconstructed 3-D humidity fields with radiosonde profiles [PDF]

Annales Geophysicae, 2013
Water vapor plays an important role in meteorological applications; GeoForschungsZentrum (GFZ) therefore developed a tomographic system to derive 3-D distributions of the tropospheric water vapor above Germany using GPS data from about 300 ground ...
M. Shangguan, M. Bender, M. Ramatschi, G. Dick, J. Wickert, A. Raabe, R. Galas   +6 more
doaj   +1 more source