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Assessment of the PPP-AR Strategy for ZTD and IWV in Africa: A One-Year GNSS Study
AtmosphereWith the increasing demand for near real-time atmospheric water vapor monitoring, this study evaluates the performance of the open-source PRIDE PPP-AR software (version 3.0.5) for retrieving Zenith Total Delay (ZTD) and Integrated Water Vapor (IWV) over ...
Moustapha Gning Tine +4 more
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New ZTD estimation model for areas with large elevation differences by integrating the GFS with GNSS
Measurement science and technologyThe Global Forecast System (GFS) of the National Center for Environmental Prediction (NCEP) can produce an hourly forecast output for estimating zenith tropospheric delay (ZTD) at any altitude on grid points.
Liu Yang +3 more
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IEEE Transactions on Geoscience and Remote Sensing
Tropospheric delay is one of the major error sources for space geodetic techniques, such as the global navigation satellite systems (GNSSs). The accurate priori zenith tropospheric delay (ZTD) information is of crucial importance for the accuracy of ...
Jian Li +6 more
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Tropospheric delay is one of the major error sources for space geodetic techniques, such as the global navigation satellite systems (GNSSs). The accurate priori zenith tropospheric delay (ZTD) information is of crucial importance for the accuracy of ...
Jian Li +6 more
semanticscholar +1 more source
IEEE Geoscience and Remote Sensing Letters
Global navigation satellite system (GNSS) meteorology utilizes the zenith tropospheric delay (ZTD) experienced by signals traversing the troposphere, which reflects atmospheric conditions.
Pengzhi Wei +6 more
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Global navigation satellite system (GNSS) meteorology utilizes the zenith tropospheric delay (ZTD) experienced by signals traversing the troposphere, which reflects atmospheric conditions.
Pengzhi Wei +6 more
semanticscholar +1 more source
Shipborne ZTD Retrieval With a Low-Cost GNSS Receiver
IEEE Geoscience and Remote Sensing LettersTropospheric delay is an essential parameter in climate research and a crucial factor for enabling high-accuracy satellite geodesy. If shipborne Global Navigation Satellite System (GNSS) zenith total delay (ZTD) retrieval can be implemented, it will ...
Xiyuan Chen +6 more
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Prediction of ZTD Based on ANFIS Model
2015Since the tropospheric delay plays a crucial role in meteorological studies and weather forecasts as well as positioning accuracy, accurate prediction of its value is critical to helping monitoring the ZTD variation on a global basis. In the previous chapter, ZTD has been estimated with a fuzzy inference system that uses a back-propagation algorithm ...
Wayan Suparta, Kemal Maulana Alhasa
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Responses of GNSS ZTD Variations to ENSO Events and Prediction Model Based on FFT-LSTME
IEEE Transactions on Geoscience and Remote Sensing, 2023The El Niño-Southern Oscillation (ENSO) event often causes natural disasters in mainland China. Existing quantitative analysis of ENSO event’s effects on climate change in mainland China is insufficient. The monthly scale prediction effectiveness of ENSO
Teng Yu +6 more
semanticscholar +1 more source
Analysis of GNSS-ZTD retrieval using dual-frequency raw observations
MeasurementYongzhao Fan +5 more
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Vertical correction model of ZTD in China region based on polynomial residual compensation
Fourth International Conference on Geoscience and Remote Sensing MappingIn order to solve the problem that the existing zenith tropospheric delay (ZTD) models in China oftenuse the exponential function with low accuracy at low elevation for vertical correction and ignore the residuals of the fitting function, the ERA5 data ...
Zicheng Wang
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IEEE Transactions on Geoscience and Remote Sensing, 2023
The power-law relationship between precipitable water vapor (PWV)/convective available potential energy (CAPE) and extreme rainfall (ER) has been explored.
Yang Liu +5 more
semanticscholar +1 more source
The power-law relationship between precipitable water vapor (PWV)/convective available potential energy (CAPE) and extreme rainfall (ER) has been explored.
Yang Liu +5 more
semanticscholar +1 more source