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Journal Articles Experimental Astronomy Year : 2021

Measuring the impact of Indonesian antennas on global geodetic VLBI network

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Ibnu Nurul Huda
  • Function : Author
Taufiq Hidayat
  • Function : Author
Budi Dermawan
  • Function : Author
Niu Liu
  • Function : Author
Stéphane Leon
  • Function : Author
Kenta Fujisawa
  • Function : Author
Yoshinori Yonekura
  • Function : Author
Koichiro Sugiyama
  • Function : Author
Tomoya Hirota
  • Function : Author
Premana W. Premadi
  • Function : Author
Rene Breton
  • Function : Author
Young-Chol Minh
  • Function : Author
Phrudth Jaroenjittichai
  • Function : Author
Dudy Wijaya
  • Function : Author
Dhota Pradipta
  • Function : Author
Nabila S. E. Putri
  • Function : Author
Sahlan Ramadhan
  • Function : Author
Lucky Puspitarini
  • Function : Author
Hesti R. T. Wulandari
  • Function : Author
Mohammad Hafieduddin
  • Function : Author

Abstract

In the near future, two radio telescopes will be installed in the Indonesian region. These telescopes are proposed to be integrated into the existing Very Long Baseline Interferometry (VLBI) network both for astronomical and geodetical purposes. Here we simulate the impact of the inclusion of the future Indonesian antennas to the estimates of Earth Orientation Parameters and the station position. The simulation was performed in two types of VLBI sessions. First, we analyse the contribution of Indonesian antennas to the existing intensive session INT3 (IN320-314), which focuses on the estimation of dUT1. We found that the addition of Indonesian antennas has reduced the estimated dUT1 repeatability value by about 25%. Next, we simulate the 24-hour session by considering two existing network configurations, which are R4 (R4934) and AOV (AOV049). Overall we found that the addition of Indonesian antennas to each network configuration decreases the repeatability value of the Earth Orientation Parameter by about 20%. Meanwhile, the repeatability value of station position is reduced up to 12%. This reduction is already achieved even when we include only one Indonesian antenna.
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Dates and versions

insu-03713042 , version 1 (04-07-2022)

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Cite

Ibnu Nurul Huda, Taufiq Hidayat, Budi Dermawan, Sébastien Lambert, Niu Liu, et al.. Measuring the impact of Indonesian antennas on global geodetic VLBI network. Experimental Astronomy, 2021, 52, pp.141-155. ⟨10.1007/s10686-021-09773-1⟩. ⟨insu-03713042⟩
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