Results 131 to 140 of about 2,072 (163)

Sensitivity Analysis of the Feed System for the TM VGOS Telescope

2020 12th International Conference on Communication Software and Networks (ICCSN), 2020
The demand for higher precision measurements in Very Long Baseline Interferometry (VLBI) continues to grow, which drives the technical development of next generation international VLBI stations called the VLBI Global Observing System (VGOS).
Zheng-Xiong Sun, Jin-Qing Wang, Guang-Li Wang   +2 more
exaly   +2 more sources

Optical Pointing Systems for the TM VGOS Telescope

2021 13th International Conference on Communication Software and Networks (ICCSN), 2021
We present here the systems aimed to measure and minimize the pointing errors for TM VGOS Telescope. The principle of pointing error correction of radio telescope is the same as that of optical telescope. By conducting pointing measurement test on target
Zheng-Xiong Sun, Gou Wei, Guang-Li Wang
semanticscholar   +2 more sources

Simulation experiments on high-precision VGOS time transfer for future geopotential difference determination

Advances in Space Research, 2021
Wen-Bin Shen
exaly   +2 more sources

Remote health monitoring system for the Chiang Mai 13-m VGOS radio telescope

Experimental Astronomy
Wei-Hua Shang-Guan, Rong-Bing Zhao, Jin-Qing Wang, Jin-Ling Li, Qing-Hui Liu, Shaogui Guo, Yong-Bin Jiang, Zhen Yan, Fanduo Basang, H. Dai, Yi-Xin Wang   +10 more
exaly   +2 more sources

VGO from shale oil. FCC processability and co-processing with conventional VGO

Fuel, 2022
Fil: Fals, Jayson.
García, Juan Rafael, Fals, Jayson, Dietta, Leandro Emanuel, Sedran, Ulises Anselmo   +3 more
openaire   +2 more sources

Performance of the VGOS Radio Telescope with As-built Feed and Geometry Using Electromagnetic Simulations

European Conference on Antennas and Propagation, 2023
This paper reports on electromagnetic simulations performed of the as-built VGOS (VLBI Global Observing System) 13.2-metre Radio Telescope at the Hartebeesthoek Radio Astronomy Observatory (HartRAO).
M. Venter, Ó. García-Pérez, F. Tercero-Martínez, J. López-Pérez, S. Malan, Philip Mey   +5 more
semanticscholar   +1 more source

Investigations of Thermal Deformation Based on the Monitoring System of Tianma 13.2 m VGOS Telescope

Research in Astronomy and Astrophysics, 2022
The thermal expansion of radio telescopes has been recognized as a significant systematic error in Very Long Baseline Interferometry (VLBI) data analysis.
Shi-Ze Song, Zhongkai Zhang, Guangli Wang, Yong Zheng   +3 more
semanticscholar   +1 more source

Deriving ionospheric TEC by VGOS data analysis during CONT17

, 2021
This article focuses on the new generation of Very Long Baseline Interferometry (VLBI), the VLBI Global Observing System (VGOS), and measurements carried out during CONT17 campaign.
S. Motlaghzadeh, M. Alizadeh, R. Cappallo, R. Heinkelmann, H. Schuh   +4 more
semanticscholar   +1 more source

Effect of Hydrotreating on Catalytic Cracking of a VGO

Energy & Fuels, 1996
The effect of hydrotreating of a vacuum gas oil (VGO) feed on the activity, product composition, and quality in a microactivity test (MAT) has been studied.
Ivar M. Dahl, Elisabeth Tangstad, Helle B. Mostad, Karin Andersen   +3 more
openaire   +1 more source

Mathematical Modeling of a VGO Hydrotreating Reactor

SPE Latin American and Caribbean Petroleum Engineering Conference, 2001
Abstract This paper presents a mathematical model developed for the operating simulation of a trickle-bed reactor. Furthermore, the model has been fixed to emulate the operation of the three reactors used at the gas oil hydrotreatment reactors available at Amuay refinery (PDVSA).
R. Lopez, C.G. Dassori
openaire   +1 more source