Results 11 to 20 of about 3,196 (215)

Tropospheric Delay Model Based on VMF and ERA5 Reanalysis Data

Applied Sciences, 2023
The global tropospheric zenith delay grid products of VMF1 and VMF3 (Vienna mapping functions) with different resolutions are used to calculate the tropospheric zenith delay of eight IGS (International GNSS Service) stations in China, and the accuracy of
Mengtao Zhang, Mengli Wang, Hang Guo, Junjun Hu, Jian Xiong   +4 more
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Improving the Vertical Modeling of Tropospheric Delay

Geophysical Research Letters, 2022
AbstractAccurate tropospheric delays from Numerical Weather Models (NWM) are an important input to space geodetic techniques, especially for precise real‐time Global Navigation Satellite Systems, which are indispensable to earthquake and tsunami early warning systems as well as weather forecasting.
Wang, Jungang, Balidakis, Kyriakos, Zus, Florian, Chang, Xiao, Ge, Maorong, Heinkelmann, Robert, Schuh, Harald, Wang, Jungang; 1 Department of Geodesy GeoForschungsZentrum (GFZ) Potsdam Germany, Balidakis, Kyriakos; 1 Department of Geodesy GeoForschungsZentrum (GFZ) Potsdam Germany, Zus, Florian; 1 Department of Geodesy GeoForschungsZentrum (GFZ) Potsdam Germany, Ge, Maorong; 1 Department of Geodesy GeoForschungsZentrum (GFZ) Potsdam Germany, Heinkelmann, Robert; 1 Department of Geodesy GeoForschungsZentrum (GFZ) Potsdam Germany, Schuh, Harald; 1 Department of Geodesy GeoForschungsZentrum (GFZ) Potsdam Germany   +12 more
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Analysis on the performances of the GNSS tropospheric delay correction models [PDF]

E3S Web of Conferences, 2022
Tropospheric delay is one of the important factors affecting GNSS positioning accuracy, and there are different ways to deal with the multiple measurement situations.
Liu Jiaxi, Chang Zhanqiang, Zheng Haoxin
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THE EFFECT OF SEASONAL VARIATION ON GNSS ZENITH TROPOSPHERIC DELAY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The 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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Empirical modeling of tropospheric delays with uncertainty [PDF]

Geoscientific Model Development
Accurate modeling of tropospheric delay is important for high-precision data analysis of space geodetic techniques, such as the Global Navigation Satellite System (GNSS).
J. Wang, J. Wang, J. Wang, J. Chen, J. Chen, J. Chen, Y. Zhang   +6 more
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Kriging Interpolation in Modelling Tropospheric Wet Delay [PDF]

Atmosphere, 2020
This contribution implements the Kriging interpolation in predicting the tropospheric wet delays using global navigation satellite system networks. The predicted tropospheric delays can be used in strengthening the precise point positioning models and numerical weather prediction models.
Hongyang Ma, Qile Zhao, Sandra Verhagen, Dimitrios Psychas, Han Dun   +4 more
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Modified Interpolation Method of Multi-Reference Station Tropospheric Delay Considering the Influence of Height Difference

Remote Sensing, 2021
In network real-time kinematic (NRTK) positioning, atmospheric delay information is critical for generating virtual observations at a virtual reference station (VRS).
Yakun Pu, Min Song, Yunbin Yuan
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Accuracy improvement of tropospheric delay correction models in space geodetic data. Case study: Egypt

Geodesy and Cartography, 2014
The tropospheric delay still remains a limiting factor to the accuracy of space based positioning techniques. The estimation of station positioning, especially height component, which is particularly important for more applications is susceptible to ...
Sobhy Abdel Monem Younes, Hafez Abbas Afify   +1 more
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A zenith tropospheric delay correction model based on the regional CORS network

Geodesy and Geodynamics, 2012
Tropospheric delay is a primary error source in earth observations and a variety of radio navigation technologies. In this paper, the relationship between zenith tropospheric delays and the elevation and longitude of stations is analyzed using the zenith
Huang Liangke, Liu Lilong, Yao Chaolong
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PERFORMANCE OF NUMERICAL WEATHER PRODUCTS FOR INSAR TROPOSPHERIC CORRECTION: A CASE STUDY OF A TROPICAL REGION [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Tropospheric delay variability remains a significant source of error in the InSAR-derived measurements. Numerical weather models have been proposed as an alternative technique to mitigate tropospheric delays in InSAR and have become a standard procedure ...
P. Kirui, P. Kirui, B. Riedel, M. Gerke
doaj   +1 more source