Analysis of systematic biases in tropospheric hydrostatic delay models and construction of a correction model [PDF]
Geoscientific Model Development, 2023 In the field of space geodetic techniques, such as global navigation satellite systems (GNSSs), tropospheric zenith hydrostatic delay (ZHD) is chosen as the a priori value of tropospheric total delay.
H. Fan +5 more
doaj +1 more source
GNSS Precipitable Water Vapor Retrieval With the Aid of NWM Data for China
Earth and Space Science, 2021 Global Navigation Satellite System (GNSS) has become a powerful tool for sensing precipitable water vapor (PWV), which is important in investigating long‐term climate or nowcasting.
Liangke Huang +7 more
doaj +1 more source
Zenith total delay study of a mesoscale convective system : GPS observations and fine-scale modelling [PDF]
, 2002 Zenith Total Delay (ZTD) observations and model calculations are used to analyze a mesoscale convective system which yielded a large amount of precipitation over a short period of time in the north-western Mediterranean. ZTD observations are derived from
Cucurull, I. +2 more
core +1 more source
An enhanced integrated water vapour dataset from more than 10 000 global ground-based GPS stations in 2020 [PDF]
Earth System Science Data, 2023 We developed a high-quality global integrated water vapour (IWV) dataset from 12 552 ground-based global positioning system (GPS) stations in 2020. It consists of 5 min GPS IWV estimates with a total number of 1 093 591 492 data points.
P. Yuan +10 more
doaj +1 more source
A new vertical reduction model for enhancing the interpolation accuracy of VMF1/VMF3 tropospheric delay products [PDF]
Geoscientific Model DevelopmentGrid-wise Vienna Mapping Functions 1 (VMF1) and Vienna Mapping Functions 3 (VMF3) tropospheric products are widely used to interpolate the a priori zenith hydrostatic delay (ZHD) and zenith wet delay (ZWD) over GNSS (Global Navigation Satellite Systems ...
P. Sun +8 more
doaj +1 more source
Development of a New Tabular Zenith Tropospheric Delay Model for Real-Time GNSS Applications
IEEE Access, 2021 The tropospheric delay is a major error source for Global Navigation Satellite System (GNSS) positioning and navigation, and usually can be corrected by using an empirical model.
Jian Mao, Junyang Han, Tiejun Cui
doaj +1 more source
HGPT2: An ERA5-Based Global Model to Estimate Relative Humidity
Remote Sensing, 2021 The neutral atmospheric delay is one of the major error sources in Space Geodesy techniques such as Global Navigation Satellite Systems (GNSS), and its modeling for high accuracy applications can be challenging.
Pedro Mateus +2 more
doaj +1 more source
Earth and Space Science, 2021 In precipitable water vapor (PWV) retrievals from Global Navigation Satellite System (GNSS) data, the two essential parameters, namely, surface pressure (Ps) and weighted mean temperature (Tm), are often not available due to the lack of collocated ...
Biyan Chen +4 more
doaj +1 more source
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 SciencesPrecipitable 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 +2 more
doaj +1 more source
, 2019 Surface temperature and pressure are indispensable variables in Global Navigation Satellite System (GNSS) meteorology. The lack of meteorological observations located at or near the GNSS sites is a big challenge for the calculation of accurate zenith ...
Junbo Shi +6 more
core +1 more source