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Impact analysis of processing strategies for long-term GPS zenith tropospheric delay (ZTD)
Atmospheric Measurement Techniques, 2023. Homogenized atmospheric water vapour data are an important prerequisite for climate analysis. Compared with other techniques, GPS has an inherent homogeneity advantage, but it still requires reprocessing and homogenization to eliminate impacts of ...
Jingna Bai +6 more
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Investigation of shipborne GNSS ZTD retrieval processing parameters by simulation
2022<div> <p><span>The aim of this work is to study the impact of the processing parameterization on the estimation of the zenith total delay (ZTD) from a shipborne GNSS antenna measurement.</span></p> <p><span>For this purpose, we used a simplified ...
Aurélie Panetier +2 more
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A direct conversion model from ZTD to PWV based on the random forest
Measurement science and technologyPrecipitable water vapor (PWV) is crucial for weather forecasting and climate change research. However, accurate PWV estimation is challenging, especially in the absence of measured meteorological data.
Chunhua Jiang +6 more
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Large-Scale ENVISAT ASAR Persistent Scatterer Interferometry Using GNSS ZTD Products
2022<p>Interferometric Synthetic Aperture Radar (InSAR) provides essential information dealing with different natural hazards caused by hydrogeological processes turned into subsidence (Lu et al., 2010). Among all geodetic techniques for monitoring land surface deformation, InSAR has demonstrated the most precise observations in both high ...
Atefe Choopani +2 more
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Remote Sensing
Utilizing real-time precise point positioning (PPP) technology is an effective approach for obtaining high-precision zenith tropospheric delay (ZTD). Without relying on the terrestrial internet, Galileo high accuracy service (HAS) can provide precise ...
Xin Chen +4 more
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Utilizing real-time precise point positioning (PPP) technology is an effective approach for obtaining high-precision zenith tropospheric delay (ZTD). Without relying on the terrestrial internet, Galileo high accuracy service (HAS) can provide precise ...
Xin Chen +4 more
semanticscholar +1 more source
International Journal of Remote Sensing
Correcting the signal delay caused by electromagnetic waves passing through the atmosphere is crucial in InSAR. Atmospheric delays are significant enough to obscure the true deformation signal, making it difficult for InSAR to detect deformation signals ...
Jierui Lu +9 more
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Correcting the signal delay caused by electromagnetic waves passing through the atmosphere is crucial in InSAR. Atmospheric delays are significant enough to obscure the true deformation signal, making it difficult for InSAR to detect deformation signals ...
Jierui Lu +9 more
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Ground-GNSS ZTD trends for climate models
GNSS Zenith Total Delay (ZTD) estimates are quantities of great interest by climate modellers since atmospheric water vapour is the major greenhouse gas. Therefore, the importance of its accurate, long-term monitoring and evaluation of trends and variability, potentially serving as independent benchmarks to climatological models, both on longer trends ...Marcelo C. Santos +17 more
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Reducing ZHD–ZWD mutual absorption errors for blind ZTD model users
Acta Geodaetica et Geophysica, 2020In precise point positioning (PPP), the zenith hydrostatic delay (ZHD) is traditionally treated as a priori value from the ZHD model but the zenith wet delay (ZWD) is treated as an unknown parameter to estimated. For some near real-time PPP tasks, priori ZHD from the blind ZHD models are often used because external meteorological measurement or ...
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Consistency and Homogeneity of ZTD Estimates from IGS Repro3
In 2019-2020, the International GNSS Service (IGS) coordinated its third reanalysis of the complete history of GNSS data collected by the IGS global network since 1994. Ten analysis centers (ACs) participated in this so-called “Repro3” effort, using the latest models and methodologies. Several of them provided, among other products,Hugo Breton +2 more
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Investigating the Role Of ZTD and Cloud Top Properties for Rainfall Detection
2024 IEEE India Geoscience and Remote Sensing Symposium (InGARSS)Global Navigation Satellite System (GNSS) measurements can provide Zenith Tropospheric Delay (ZTD) values with high temporal resolution and precision, making them valuable for studying meteorological phenomena, especially precipitation events.
Abhishek Kumar Yadav +4 more
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