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A Calibrated GPT3 (CGPT3) Model for the Site-Specific Zenith Hydrostatic Delay Estimation in the Chinese Mainland and Its Surrounding Areas

Remote Sensing, 2022
The prior zenith hydrostatic delay (ZHD) is an essential parameter for the Global Navigation Satellite System (GNSS) and very long baseline interferometry (VLBI) high-precision data processing. Meanwhile, the precise ZHD facilitates the separation of the
Lilong Liu, Junyu Li, Liangke Huang
exaly   +4 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.
Moufeng Wan, Xiaoming Wang, Qimin He
exaly   +3 more sources

The New Improved ZHD and Weighted Mean Temperature Models Based on GNSS and Radiosonde Data Using GPT3 and Fourier Function

Atmosphere, 2022
Compared to the zenith hydrostatic delay (ZHD) obtained from the Saastamonien model based on in-situ measured meteorological (IMM) data and radiosonde-derived weighted mean temperature (Tm), the ZHD and Tm deviations of the GPT3 model have shown obvious ...
Qimin He
exaly   +4 more sources

Assessment of GNSS Zenith Tropospheric Delay Responses to Atmospheric Variables Derived From ERA5 Data Over Nigeria

Satellite Navigation, 2023
Tropospheric delay is a major error caused by atmospheric refraction in Global Navigation Satellite System (GNSS) positioning. The study evaluates the potential of the European Centre for Medium-range Weather Forecast (ECMWF) Reanalysis 5 (ERA5 ...
Ifechukwu Ugochukwu Nzelibe
exaly   +2 more sources

Implementation of Ready-Made Hydrostatic Delay Products for Timely GPS Precipitable Water Vapor Retrieval Over Complex Topography: A Case Study in the Tibetan Plateau

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
For the timely retrieval of global positioning system based precipitable water vapor (GPS-PWV) over complex topography when there is no in situ pressure-derived zenith hydrostatic delays (ZHDs), this article evaluates three types of ready-made ZHD ...
Yunbin Yuan, Dabin Ji, Hongxing Zhang
exaly   +3 more sources

An Analysis of Multisource Tropospheric Hydrostatic Delays and Their Implications for GPS/GLONASS PPP-Based Zenith Tropospheric Delay and Height Estimations

Journal of Geodesy, 2021
Yunbin Yuan, Hongxing Zhang
exaly  

A Global Grid Model for Calibration of Zenith Hydrostatic Delay

Advances in Space Research, 2021
Jiming Guo, Fei Yang, Xiaolin Meng
exaly  

The Influence of Different Modelling Factors on Global Temperature and Pressure Models and Their Performance in Different Zenith Hydrostatic Delay (ZHD) Models

Remote Sensing, 2020
Xiangdong An, Jiming Guo, Qiyi He
exaly  

Analysis of GNSS-Derived Tropospheric Zenith Non-Hydrostatic Delay Anomaly During Sandstorms in Northern China on 15th March 2021

Remote Sensing, 2022
Maosheng Zhou, Jinyun Guo
exaly  

Quantitative Assessment of Meteorological and Tropospheric Zenith Hydrostatic Delay Models

Advances in Space Research, 2016
Jiming Guo, Di Zhang, Junbo Shi
exaly