Realtime VLBI System Using Public ATM Network

• HAMA Shin'ichi

  Communications Research Laboratory, MPT

• KIUCHI Hitoshi

  Communications Research Laboratory, MPT

• IMAE Michito

  Communications Research Laboratory, MPT

• TAKAHASHI Yukio

  Communications Research Laboratory, MPT

• UOSE Hisao

  Nippon Telegraph and Telephone Co.

• KANEKO Akihiro

  Communications Research Laboratory, MPT

• NATORI Kazuhiko

  Elecs Industry Co.

抄録

VLBI is an important application of ATM technology bacause it can transmit huge amounts of data. A single VLBI experiment typically generates data (which must be recorded and transported until they are cross-correlated) of terabit order at each separated observing site. Conventional VLBI not only requires manpower but also limits the maximum observation data rate. Therefore, a realtime VLBI using a private ATM network was developed recently, but it could not be utilized for regular VLBI experiment. Since utilization of public ATM is most realistic solution for realtime VLBI between ordinary observing sites, we have developed an interface equipment that connects VLBI observation and processing equipment to a public ATM network and demonstrated a successful experiment. This equipment supports VLBI's standard bit rates as 128 Mbps and 256 Mbps, though data rate for user's payload in 155.52 Mbps (STM-1 / OC-3) ATM network is actually only 119.5Mbps. It can easily step to higher networks as 622 Mbps.

収録刊行物

• IEICE transactions on communications

  IEICE transactions on communications 83 (2), 246-252, 2000-02-25

  一般社団法人電子情報通信学会

キーワード

• VLBI
• ATM
• CBR
• satellite link

詳細情報

• CRID: 1571980077394238592
• NII論文ID: 110003218621
• NII書誌ID: AA10826261
• ISSN: 09168516
• 本文言語コード: en
• データソース種別:
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