AAS 203rd Meeting, January 2004
Session 40 Observations and Instrumentation: Non-Optical
Poster, Tuesday, January 6, 2004, 9:20am-6:30pm, Grand Hall

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[40.10] From Wagons to Race Cars, At Least Now We Have A Chassis

A.L. Morrow (University of Arizona)

For the past 30 years Very-Long-Baseline Interferometry (VLBI) has provided astronomers with the most accurate measurements to date of both distant radio sources as well as the tectonic plates. The resolutions attainable through VLBI are orders of magnitude better than other instruments. In order to transmit radio signals collected at different sites to a correlator for processing the VLBI data was stored on magnetic tapes, and then the magnetic tapes were shipped through the mail to the central processing site. This was not only arduous and inefficient, it was also costly. Now this means of shipment can be replaced by global high speed networks. This means of transmission is called e-VLBI. New protocols must be developed so e-VLBI can become a proficient high bandwidth background user. The protocol agreed upon uses a Real-time Transport Protocol (RTP) framework to preserve timing information and synchronization. The RTP is then transported using the Internet User Datagram Protocol (UDP) with RTP Control Protocol (RTCP) monitoring the networks performance. When this protocol is fully functional astronomers will be able to observe all over the world and receive results in real time.

If you would like more information about this abstract, please follow the link to http://web.haystack.mit.edu/vlbi/vlbi.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: morrow@physics.arizona.edu

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.