Very Long Baseline Connected Interferometry via the STM-16 ATM Network (IEICE/IEEE Joint Special Issue on Recent Progress in ATM Technologies)

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概要

• 論文の詳細を見る

• The Communications Research Laboratory (CRL), the National Astronomical Observatory (NAO), the Institute of Space and Astronoutical Science (ISAS), and the Telecommunication Netswork Laboratory Group of Nippon Telegraph and Telephone Corporation (NTT) have developed a very-long-baseline-connected-interferometry array, maximum baseline-length was 208 km, using a high-speed asynchronous transfer mode (ATM) network with an AALl that corresponds to the constant bit-rate protocol. The very long baseline interferometry (VLBI) observed data is transmitted through a 2.488-Gbps [STM-16 / OC-48] ATM network instead of being recorded on to magnetic tape. By combining antennas via a high-speed ATM network, a highly-sensitive virtual (radio) telescope system was realized. The system was composed of two real-time VLBI networks: the Key-Stone-Project (KSP) network of CRL (which is used for measuring crustal deformation in the Tokyo metropolitan area), and the OLIVE (optically linked VLBI experiment) network of NAO and ISAS which is used for astronomy (space-VLBI). These networks operated in cooperation with NTT. In order to realize a virtual telescope, the acquired VLBI data were corrected via the ATM networks and were synthesized using the VLBI technique. The cross-correlation processing and data observation were done simultaneously in this system and radio flares on the weak radio source (HR 1099) were detected.

• 社団法人電子情報通信学会の論文
• 2000-02-25

著者

• FUJISAWA Kenta

  Department of Physics, Faculty of Science, Yamaguchi University

• Shibata K

  National Astronomical Observatory

• SUGIYAMA Koichiro

  Graduate School of Science and Engineering, Yamaguchi University

• Hiroshi Takaba

  Faculty Of Engineering Gifu University

• Sorai Kazuo

  Division Of Physics Graduate School Of Science Hokkaido University

• Iguchi S

  National Astronomical Observatory

• Kaneko Akihiro

  Research Institute Of Brewing Resources Co. Ltd. :(present Address)wines & Spirits Technical Res

• UOSE Hisao

  NTT Advanced Technology Corporation

• Kondo Tetsuro

  National Inst. Information And Communications Technol. Ibaraki

• Kondo Tetsuro

  Space-time Standards Group National Institute Of Information And Communications Technology:ajou Univ

• TAKAHASHI Yoshitaka

  NTT Service Integration Laboratories

• Kawaguchi Noriyuki

  National Astronomical Observatory

• Nakajima Junichi

  Kashima Space Research Center Communications Research Laboratory

• Takahashi Y

  Waseda Univ. Tokyo Jpn

• Kaneko A

  National Cancer Center Tokyo Jpn

• Miyaji Takeshi

  Mizusawa Vlbi Observatory National Astronomical Observatory

• Nakajima J

  Research Center For Prediction Of Earthquakes And Volcanic Eruptions Graduate School Of Science Toho

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