Results 11 to 20 of about 653 (164)
THE EFFECT OF SEASONAL VARIATION ON GNSS ZENITH TROPOSPHERIC DELAY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesThe Global Navigation Satellite System (GNSS) signal experiences delays caused by the atmosphere, leading to the lengthening of the geometric path of the ray, commonly referred to as tropospheric delay. This delay is a significant source of error in GNSS
N. Tekin Ünlütürk, U. Doğan
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Estimating Zenith Tropospheric Delay Based on GPT2w Model [PDF]
IEEE Access, 2019 To precisely and conveniently estimate zenith tropospheric delay (ZTD), troposphere refractivity is deduced through global pressure and temperature 2w (GPT2w) model and surface meteorology devices, ZTD is estimated based on integration of refractivity in
Zan Liu, Xihong Chen, Qiang Liu
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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
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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
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A global empirical model for estimating zenith tropospheric delay [PDF]
Science China Earth Sciences, 2015 Tropospheric delay acts as a systematic error source in the Global Navigation Satellite Systems (GNSS) positioning. Empirical models UNB3, UNB3m, UNB4 and EGNOS have been developed for use in Satellite-Based Augmentation Systems (SBAS). Model performance, however, is limited due to the low spatial resolution of the look-up tables for meteorological ...
Yao Y, Zhang B, Xu C, He C, Yu C, Yan F
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Short-Term Forecast of Tropospheric Zenith Wet Delay Based on TimesNet. [PDF]
Sensors (Basel)The tropospheric zenith wet delay (ZWD) serves as a pivotal parameter for atmospheric water vapour inversion. By converting it into precipitable water vapour, high-temporal-resolution atmospheric humidity monitoring becomes feasible, providing crucial support for enhancing short-term rainfall forecast accuracy.
Zhao X +5 more
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Remote Sensing, 2021 In GNSS analysis, the tropospheric delay is parameterized by applying mapping functions (MFs), zenith delays, and tropospheric gradients. Thereby, the wet and hydrostatic MF are derived under the assumption of a spherically layered atmosphere.
Florian Zus +4 more
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The Influence of Zenith Tropospheric Delay on PPP-RTK [PDF]
Journal of Applied Engineering Sciences, 2016 Abstract The PPP technique is more and more used in different GPS precise application. The PPP precision is related to many factors and the most important are: the number of satellites, the ambiguity resolution, the ability to model the ionospheric and tropospheric delays, solid earth and ocean tides, relativistic effects and antenna ...
S. Nistor, A.S. Buda
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Estimation of GNSS tropospheric products and their meteorological exploitation in Slovakia
Contributions to Geophysics and Geodesy, 2020 This paper discusses the in near–real time processing of Global Navigation Satellite System observations at the Department of Theoretical Geodesy at the Slovak University of Technology in Bratislava.
Martin Imrišek +2 more
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Development and evaluation of the refined zenith tropospheric delay (ZTD) models [PDF]
Satellite Navigation, 2021 AbstractThe tropospheric delay is a significant error source in Global Navigation Satellite System (GNSS) positioning and navigation. It is usually projected into zenith direction by using a mapping function. It is particularly important to establish a model that can provide stable and accurate Zenith Tropospheric Delay (ZTD).
Fei Yang +4 more
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