Results 11 to 20 of about 122 (119)
Deep Neural Networks for Refining Vertical Modeling of Global Tropospheric Delay
Geophysical Research LettersKinematic airborne platforms are becoming increasingly vital for Earth observation. They highlight the critical need for accurate tropospheric delay corrections across varying altitudes, especially as most existing models are limited to Earth's surface ...
Peng Yuan +9 more
doaj +2 more sources
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 +2 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
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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
Tropospheric delay performance for GNSS integrated water vapor estimation by using GPT2w model, ECMWF's IFS operational model and in situ meteorological data [PDF]
Advances in Geosciences, 2018 Tropospheric delay comprises one of the most important error sources in satellite navigation and is caused when radio signals broadcasted by GPS satellites propagate into the atmosphere.
C. Oikonomou +10 more
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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 ...
Hongxing Zhang +4 more
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Troposphere Sensing Using Grazing‐Angle GNSS‐R Measurement From LEO Satellites
Geophysical Research Letters, Volume 50, Issue 24, 28 December 2023., 2023 Abstract This paper studies a new concept of using global navigation satellite system (GNSS) signals coherently reflected over relatively smooth ocean and ice surfaces from very low elevation angles (below ∼8°) and received by low Earth orbit (LEO) satellites to retrieve the tropospheric information.
Yang Wang
wiley +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
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PWV Retrieval Performance Evaluation for the Fresh BDS‐3 With Multisource Data
Earth and Space Science, Volume 10, Issue 10, October 2023., 2023 Abstract The entire global operation of the newly launched BDS global navigation satellite system (BDS‐3) was completed in July 2020. After that, a series of performance tests were conducted, such as positioning, navigation, and signal experiments. However, the precipitable water vapor (PWV) retrieval performance evaluation of BDS‐3 has not yet been ...
Nan Jiang +6 more
wiley +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
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