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Proceedings Paper

Experiment of real-time space VLBI by VSOP
Author(s): Hideyuki Kobayashi; Noriyuki Kawaguchi; Kenta Fujisawa; Satoru Iguchi; Hisao Uose; Sotetsu Iwamura; Takashi Hoshino; Y. Murata; Hisashi Hirabayashi
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Paper Abstract

We have carried out the experiment of real-time space VLBI by using a high-speed ATM network. A space VLBI program is carried out with the HALCA satellite, which has an 8-m diameter radio telescope. Downlink data is transmitted to Usuda station, which is a Japanese data link station. And Usuda 64-m telescope is used as a ground radio telescope. They were used for this experiment. It is the first experiment that an optical fiber network was applied for a real-time space VLBI. The ATM optical-fiber network has 2.4 Gbps transmission capability. For the real-time space VLBI experiment, 128 Mbps data are transmitted. The VLBI correlator at NAOJ is used, which is usually used for the tape based ground and space VLBI observations. And we have succeeded to detect fringes using this network with a satellite downlink station and a ground radio telescope by test data, which are play-backed with recorded tapes. Unfortunately we have not tested actual observations because of a serious trouble of the satellite.

Paper Details

Date Published: 3 July 2000
PDF: 4 pages
Proc. SPIE 4015, Radio Telescopes, (3 July 2000); doi: 10.1117/12.390447
Show Author Affiliations
Hideyuki Kobayashi, National Astronomical Observatory (Japan)
Noriyuki Kawaguchi, National Astronomical Observatory (Japan)
Kenta Fujisawa, National Astronomical Observatory (Japan)
Satoru Iguchi, Univ. of Electro-Communications (Japan)
Hisao Uose, NTT Information Sharing Platform Labs. (Japan)
Sotetsu Iwamura, NTT Information Sharing Platform Labs. (Japan)
Takashi Hoshino, NTT Advanced Technology Corp. (Japan)
Y. Murata, Institute of Space and Astronomical Science (Japan)
Hisashi Hirabayashi, Institute of Space and Astronomical Science (Japan)

Published in SPIE Proceedings Vol. 4015:
Radio Telescopes
Harvey R. Butcher, Editor(s)

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