e-VLBI
Announcement
5th International e-VLBI Workshop, this international meeting at MIT Haystack Observatory will explore the current state of high-speed astronomy data transmission, concentrating on e-VLBI, but recognizing the synergy with other geodesy/astronomy applications requiring real-time or near-real-time high-speed data transmissions.
Very Long Baseline Interfermometry ("VLBI") is a radio-astonomy technique that uses an array of up to approximately 20 highly coordinated radio telescopes, scattered accross the globe, to create the equivalent of a single large coherent antenna.
electronic-VLBI or ("e-VLBI") is concerned with the technique of transmitting the data directly from the telescope to a correlator, via high-speed networks, either in real-time or near real time rates.
Advantages of e-VLBI:
- Higher potential data rates for greater sensitivity with the same antennas
- Faster turnaround of results for use in scientific investigation
- Elimination of large and expensive media pool, that is currently being used.
e-VLBI News and Past Events
NyAlesund to Haystack e-VLBI Project
 |
The first successful transfer from NyAlesund to Haystack using e-VLBI was completed on June 14 for session R1228. The shared end-to-end link which is composed of both a microwave and fiber connection, crosses 5 domains, and has a self restricted upper bound on the transfer limit of 100Mbps.
This project, which began September 2005, is a culmination of work from people at The Norweigan Mapping Authority, Uninett, NASA, and the folks at MIT Haystack Observatory. The project is directed towards establishing a direct high-speed data link from the NMA Geodetic Observatory (Figure 1) in Ny-Ålesund Svalbard, to the MIT Haystack Observatory in Westford Massachusetts. The e-VLBI evaluation is scheduled to run through August 31, 2006, and contains data sets ranging from 700 giga bytes up to 4.5 terra bytes of data to be transferred per session.
SuperComputing 2005 - Seattle
Come join us for an e-VLBI demonstration at SC05, November 12th thru 18th. We will be co-located in the Internet2 booth. The demonstration will exhibit dynamic provisioning and e-VLBI.
The e-VLBI demo will feature the Antennas from Massachussetts, Maryland, England, The Netherlands, Sweden and Japan, transmitting live data to the correlator in Westford, Massacheussetts in real-time at rates of 512 Mbps. The data will be correlated and transmitted to the conference floor for the results.
The major achivement of this demonstration will be the implementation and use of VSI-E specification between Kashima and Westford and using both UDP and TCP as transport mechanisms based on network restraints.
This demonstration would not be able to be accomplished without the dedicated help of the following participating organizations: MIT Haystack Observatory, NSF, NASA, the Dragon Project, Internet 2, MCNS, JIVE, NICT, Kashima, Astron, SUNet, Nordinet, UKLight, and the ESLEA Project.
781.981.5400 
