Results 81 to 90 of about 1,305 (202)

The effect of UNBabc mapping function modification to GPS tropospheric delay [PDF]

, 2008
Tropospheric delay refers to the refraction of the Global Positioning System (GPS) signal as it passes through the neutral atmosphere from the satellite to the earth, which causes longer distance traveled by the signal.
Sakidin, Hamzah, Md Nooraini, Mohd Salmi, Matori, Abd. Nasir, Mohamed Shariff, Abdul Rashid, Ahamd, Asmala, Mohamed, Azhari, Abu Bakar, Mohd Rizam   +6 more
core   +1 more source

DESIGNATING THE ERROR OF VERTICAL COORDINATE OF AIRCRAFT POSITION IN THE GPS SYSTEM

Scientific Journal of Silesian University of Technology. Series Transport, 2020
This article presents the results of research concerning the determination of an error of the vertical position of an aircraft during a flight, taking into account, the flight altitude and the values of the ZTD tropospheric product.
Małgorzata KIRSCHENSTEIN, Kamil KRASUSKI, Artur GOŚ   +2 more
doaj   +1 more source

Mitigating Elevation-Dependent Errors in Tropospheric Delay Interpolation for InSAR Applications [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Interferometric Synthetic Aperture Radar (InSAR) is a powerful tool for detecting ground deformation with millimeter precision. However, atmospheric effects, particularly tropospheric delays, significantly degrade the accuracy of InSAR-derived ...
E. Nekouzade Chaharmahali, J. Asgari
doaj   +1 more source

The VMD-Informer-BiLSTM-EAA Hybrid Model for Predicting Zenith Tropospheric Delay

Remote Sensing
Zenith Tropospheric Delay (ZTD) is a significant source of atmospheric error in the Global Navigation Satellite System (GNSS). Developing a high-accuracy ZTD prediction model is essential for both GNSS positioning and GNSS meteorology.
Zhengdao Yuan, Xu Lin, Yashi Xu, Ruiting Dai, Cong Yang, Lunwei Zhao, Yakun Han   +6 more
doaj   +1 more source

Penentuan Zenith Tropospheric Delay Dan Precipitable Water Vapor Menggunakan Perangkat Lunak Gamit [PDF]

, 2015
The signals from each Global Positioning System (GPS) satellites that orbiting above the earth's surface will be received by a receiver through the layers of atmosphere.
Susilo, S. (Susilo), Gusfarienza, H. (Heri), Yuwono, B. D. (Bambang), Awaluddin, M. (Moehammad)   +3 more
core  

An improved global pressure and zenith wet delay model with optimized vertical correction considering the spatiotemporal variability in multiple height-scale factors [PDF]

Geoscientific Model Development
Atmospheric pressure and zenith wet delay (ZWD) are essential for global navigation satellite system (GNSS) tropospheric correction and precipitable water vapor (PWV) retrieval. As the development progresses of real-time GNSS kinematic technology, moving
C. Jiang, C. Jiang, C. Jiang, X. Gao, H. Zhu, S. Wang, S. Liu, S. Chen, G. Liu   +8 more
doaj   +1 more source

Different aspects of zenith tropospheric delay modelling in GNSS

, 2018
Tema magistrske naloge združuje področji geodezije in meteorologije, ki na različne načine omogočata določiti vpliv troposfere na opazovanja GNSS. Troposfera povzroči ukrivljanje signala in zato podaljšanje poti razširjanja signala glede na razširjanje ...
Kogelnik, Leon
core  

Improving the estimation of zenith dry tropospheric delays using regional surface meteorological data [PDF]

, 2013
Global Navigation Satellite Systems (GNSS) are emerging as possible tools for remote sensing high-resolution atmospheric water vapour that improves weather forecasting through numerical weather prediction models.
Luo, X., Heck, B., Awange, Joseph
core   +1 more source

Empirical model of correction for zenith tropospheric delay

Journal of Measurement Science and Instrumentation, 2014
The paper considers the possibility of correction of zenith tropospheric delays,and calculates it with the standard model,which takes into account the values of the refractive index of the troposphere at the time of measurement. Based on the experimental
V F Kravchenko, V I Lutsenko, I V Lutsenko, D O Popov, A G Laush, V N Gudkov   +5 more
doaj  

Analysis of the Accuracy of GMF, NMF, and VMF1 Mapping Functions with GPT 50 a Priori Zenith Constraint in Tropospheric Delay Modelling [PDF]

, 2015
This paper compares the accuracy of the different mapping. Global Mapping Function (GMF), Niell Mapping Function (NMF) and Updated Vienna Mapping Function (VMF1), the update of Vienna Mapping Function (VMF) are the mapping functions studied.When ...
Hunegnaw, Addisu, Makabayi, Brian
core