High-speed Network Environment for Japanese e-VLBI group
Abstract
Japanese e-VLBI team has been conducting realtime VLBI experiments using very-high-speed network since 1995. For the first phase of the experiments started as KSP and OLIVE (applications for geodesy and radio astronomy respectively) used dedicated networks comprised of Asynchronous Transfer Mode (ATM) technologies at the speed of 256Mbps per data stream (total of 1Gbps for KSP observations). In 1998, KSP and OLIVE were united as one e-VLBI group (GALAXY) interconnecting major radio telescopes around Kanto and Nagano area. Since then every effort has been made to connect more radio telescopes located both in Japan and abroad with higher transmission rates. This paper discusses the communications technologies suitable for e-VLBI and describes the current status of high-speed network environment for GALAXY group. We also mention the new possibility for global e-VLBI by collaborating with other research networks, and the problems need to be solved when a number of networks are used for this very demanding application.
- Publication:
-
Proceedings of the 4th eVLBI workshop
- Pub Date:
- 2005
- Bibcode:
- 2005evlb.confE...3U