Results 21 to 30 of about 1,305 (167)
Impact analysis of processing strategies for long-term GPS zenith tropospheric delay (ZTD)
Atmospheric Measurement Techniques, 2023 Abstract. 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 applied strategy and observation environmental changes where a selection of proper processing ...
Jingna Bai +6 more
openaire +3 more sources
Inter-technique validation of tropospheric slant total delays [PDF]
, 2017 An extensive validation of line-of-sight tropospheric slant total delays (STD) from Global Navigation Satellite Systems (GNSS), ray tracing in numerical weather prediction model (NWM) fields and microwave water vapour radiometer (WVR) is presented.
Brenot, Hugues +10 more
core +9 more sources
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
RESEARCH ON ZENITH TROPOSPHERIC DELAY MODELING OF REGIONAL CORS NETWORK [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 By calculating the zenith troposphere information from 11 reference stations of the CORS network in Guilin City, Guangxi Province in 2018 by GAMIT10.6 as the reference values, analyzing the relationship between the zenith troposphere and the elevation ...
Y. F. Yang +4 more
doaj +1 more source
Remote Sensing, 2021 Tropospheric delay is a major error source in the Global Navigation Satellite System (GNSS), and the weighted mean temperature (Tm) is a key parameter in precipitable water vapor (PWV) retrieval. Although reanalysis products like the National Centers for
Lijie Guo +8 more
doaj +1 more source
Remote Sensing, 2022 Accurate estimation of tropospheric delay is significant for global navigation satellite system’s (GNSS) high-precision navigation and positioning. However, due to the random and contingent changes in weather conditions and water vapor factors, the ...
Guolin Liu +6 more
doaj +1 more source
Tropospheric delay efficiency from CSRS-PPP online service for meteorologists in Iran [PDF]
Numerical Methods in Civil Engineering, 2021 Earth’s tropospheric delay is a valuable parameter in meteorological and climatic applications and studies such as short-term weather forecasting, monitoring of severe weather conditions, and long-term climate change.
A. Sam Khaniani, S. Farzaneh
doaj +1 more source
An improved global zenith tropospheric delay model GZTD2 considering diurnal variations [PDF]
Nonlinear Processes in Geophysics, 2016 The zenith tropospheric delay (ZTD) is an important atmospheric parameter in the wide application of global navigation satellite systems (GNSS) technology in geoscience.
Y. Yao, Y. Hu, C. Yu, B. Zhang, J. Guo
doaj +1 more source
Empirical model for mean temperature for Indian zone and estimation of precipitable water vapor from ground based GPS measurements [PDF]
, 2007 Estimation of precipitable water (PW) in the atmosphere from ground-based Global Positioning System (GPS) essentially involves modeling the zenith hydrostatic delay (ZHD) in terms of surface Pressure (<I>P<sub>s</sub></I>) and ...
B. V. Thampi +3 more
core +9 more sources
Remote Sensing, 2021 The tropospheric delay is one of the main error sources that degrades the accuracy of Global Navigation Satellite Systems (GNSS) Single Point Positioning (SPP).
Ling Yang +3 more
doaj +1 more source