Results 21 to 30 of about 421 (151)
Frontiers in Earth Science, 2020 We studied disastrous heavy rainfall episodes in 2017–2019 summer in SW Japan, especially in the Kyushu region using tropospheric delay data from the Japanese dense global navigation satellite system (GNSS) network GEONET (GNSS Earth Observation Network).
Syachrul Arief +2 more
doaj +1 more source
Applied Geomatics, 2022 Global Navigation Satellite System (GNSS) has revolutionized activities involving geodetic positioning. To achieve a desired accuracy, it is essential to model the atmosphere in an appropriate way. With respect to the neutral atmosphere, the signal sent by the satellite suffers a delay when crossing this layer during its travel to the receiver on the ...
Thainara Munhoz Alexandre de Lima +4 more
openaire +2 more sources
Short-Term PM2.5 Concentration Prediction by Combining GNSS and Meteorological Factors
IEEE Access, 2020 With the development of industrialization, fine particulate matter (PM2.5) severely chills the health of people. Studies have shown that the variation of PM2.5 concentration is related to the Global Navigation Satellite System (GNSS) tropospheric delay ...
Hongfeng Wen, Yamin Dang, Liwei Li
doaj +1 more source
Remote Sensing, 2021 Accurate tropospheric delay (TD) and weighted mean temperature (Tm) are important for Global Navigation Satellite System (GNSS) positioning and GNSS meteorology.
Liying Cao +6 more
doaj +1 more source
Applying the Water Vapor Radiometer to Verify the Precipitable Water Vapor Measured by GPS
Terrestrial, Atmospheric and Oceanic Sciences, 2014 Taiwan is located at the land-sea interface in a subtropical region. Because the climate is warm and moist year round, there is a large and highly variable amount of water vapor in the atmosphere.
Ta-Kang Yeh +4 more
doaj +1 more source
Using GNSS Observations for Tropospheric Delay Prediction Using Artificial Intelligence [PDF]
Port Said Engineering Research Journal, 2023 GNSS technology holds significant importance across wide applications, ranging from mapping, surveying, and precise timekeeping to ship navigation. Its operational principle hinges on the accurate measurement of signal travel time, which is crucial for ...
Ahmed Sedeek
doaj +1 more source
Remote Sensing, 2022 GNSS meteorology is today one of the most growing technologies to monitor severe weather events. In this paper, we present the usage of 160 GPS reference stations over the period of 14 days to monitor and track Hurricane Harvey, which struck Texas in ...
Victoria Graffigna +3 more
doaj +1 more source
THUNDERSTORM WEATHER ANALYSIS BASED ON XGBOOST ALGORITHM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Using the GPS data service platform of China seismological bureau to get the ZTD separated ZWD data pair and the content in the air, and by detecting the O3 value in the air is an effective method to analyze and study the thunderstorm weather.This paper ...
L. L. Liu, H. C. Liu, C. F. Zhu
doaj +1 more source
REAL-TIME TROPOSPHERIC PRODUCT ESTABLISHMENT AND ACCURACY ASSESSMENT IN CHINA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 Tropospheric delay has always been an important issue in Global Navigation Satellite System (GNSS) processing. Empirical tropospheric delay models are difficult to simulate complex and volatile atmospheric environments, resulting in poor accuracy of the ...
M. Chen +9 more
doaj +1 more source
Remote Sensing, 2022 The Wanshan calibration site (WSCS) is the first in-situ field for calibration and validation (Cal/Val) of HY-2 satellite series in China. It was built in December, 2018 and began business operation in 2020.
Wanlin Zhai +9 more
doaj +1 more source