1988 Fiscal Year Final Research Report Summary
| Project/Area Number |
62300005
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
広領域
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| Research Institution | National Astronomical Observatory of Japan (1988)
The University of Tokyo (1987) |
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Principal Investigator |
MORIMOTO Masaki Nobeyama Radio Obsevatory, National Astronomical Observatory, 野辺山宇宙電波観測所, 教授 (80012805)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIMURA Toshimitsu The Institute of Space and Astronautical Science, 衛生応用工学研究系, 教授 (30150048)
TABARA Hiroto Faculty of Education, Utsunomiya University, 教育学部, 教授 (50012878)
CHIKADA Yoshihiro Nobeyama Radio Obsevatory, National Astronomical Observatory, 野辺山宇宙電波観測所, 助教授 (30126122)
INOUE Makoto Division of Radio Astronomy, National Astronomical Observatory, 電波天文学研究系, 助教授 (10151622)
HIRABAYASHI Hisashi The Institute of Space and Astronautical Science, 衛生応用工学研究系, 助教授 (90012880)
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| Project Period (FY) |
1987 – 1988
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| Keywords | スペースVLBI |
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| Research Abstract |
Space VIBI is shown feasible with the exisiting technology and its extension.
1) Satellite specifications A satellite with a deployable parabolic antenna of 10m diameter, observing frequency of 1.6,5,and 22GHz and data downlink bandwidth of 64MHz, is designed. Satellite weight of 760kg is necessary. With an antenna of 5m diameter, satellite can be launched with a smaller rocket. Technology verification experiment is still possible, but scientific output will be reduced seriously.
2) Orbit Apogee height of 20000km and perigee height of 1000km or mere willgive the best results. launch sequence has been also studied fully.
3) Ground based observations At least 4 tracking stations and 5-10 suitably distributed radio telescopes are necessary on the ground. International cooperation is essential for this part. A large correlator and image processing computer with suitable software are shown necessary and design outline is obtained.
Due to the study, actual design and production work for the space VIBI can be started.
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