Results 191 to 200 of about 3,196 (215)

Estimation of tropospheric time delay for Indian LAAS

2013 International Conference on Emerging Trends in VLSI, Embedded System, Nano Electronics and Telecommunication System (ICEVENT), 2013
In LAAS with airport pseudolites (APLs), error introduced in the signals due to tropospheric time delay proves to be the largest in pseudolite error budget. In this paper, tropospheric delay (TD) is estimated using Hopfield model and RTCA model for a typical LAAS scenario. Hopfield model is used to estimate delay in GPS signal and RTCA model is used to
Q. Sultana, A. D. Sarma, M. Q. Javeed
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Analysis of Regional Distribution and Change of Tropospheric Delay

Applied Mechanics and Materials, 2014
In this article, data of stations distributed over China was used to calculate tropospheric delay. The result was compared with the tropospheric zenith delay calculated from model. The rules and Characteristic of tropospheric delay over China was analyzed from the aspect of altitude, climate, and change.
Hai Shen Wang, Chuang Shi, Yun Chang Cao
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Estimation of Tropospheric Delay Models Compliance

2008
Tropospheric delay can be a significant source of error for satellite-based positioning systems, if it is not properly estimated. Two basic types of delay prediction models exist. The first use surface meteorological parameters to estimate the magnitude of the tropospheric delay, and the other global models use average and seasonal variation data.
Kos, Tomislav, Markežić, Ivan
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An improved fitting model of the regional tropospheric delay

2012 5th International Congress on Image and Signal Processing, 2012
Tropospheric delay errors, as the main error source of the continuous operating reference station system(short for CORS), must be corrected in high-precision positioning. In this article, several high precision fitting models are introduced, and their accuracy in different conditions is compared and analyzed.
Xianjian Lu, Hongbo Yan, Chao Ren
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Fast tropospheric delay predictions for antenna height diversity

IEEE Transactions on Communications, 1997
Terrestrial microwave links sometimes suffer from signal fading which may be relieved with antenna diversity or frequency diversity. Vertical spacing of the antennas has been known empirically to offer performance gains for many links. A fast new method for tropospheric delay predictions is discussed. It uses Mathematica for critical functional fits to
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Assessment of BeiDou’s Tropospheric Model (IGGtrop) for tropospheric delay correction in northern hemisphere

Journal of Applied Geodesy, 2019
Abstract Satellite navigation systems face different types of errors that affect the positioning accuracy. The tropospheric delay considers one of the major sources of error for the transmitted signal that could face a tropospheric delay of over 2 m at zenith and 20 m at lower satellite elevation angles. A positioning error of 10 m could
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Prediction of troposphere wet delay

Journal of Applied Geodesy, 2011
Ahmed El-Mowafy, Johnny Lo
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Tropospheric Delay from VLBI and GNSS Measurements

Astronomy Letters, 2018
Using an updated version of the QUASAR software package developed at the Institute of Applied Astronomy of the Russian Academy of Sciences, we have processed the VLBI observations within the international CONT14 program (May 6–20, 2014), in which a global network of 17 stations was involved (a total of ~250 000 observations).
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Corrections to “Robust Modeling of GNSS Tropospheric Delay Dynamics”

IEEE Transactions on Aerospace and Electronic Systems, 2022
Elisa Gallon, Mathieu Joerger, Boris Pervan   +2 more
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Modeling Research on Tropospheric Delay Mapping Function

2023 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC), 2023
Ruoyu Li, Leke Lin, Xiangming Chen, Qiang Zhang   +3 more
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