Real-Time, Very-Long-Baseline Interferometry Based on the Use of a Communications Satellite
- 21 October 1977
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 198 (4314) , 289-291
- https://doi.org/10.1126/science.198.4314.289
Abstract
The Hermes satellite, a joint Canadian-American program, has been used to provide a communication channel between radio telescopes in West Virginia and Ontario, for very-long-baseline interferometry (VLBI). This system makes possible instantaneous correlation of the data as well as a sensitivity substantially better than that of earlier VLBI systems, by virtue of a broader observational bandwidth. With the use of a geostationary communications satellite it is possible to eliminate the tape recorders and the most troublesome part of the postobservational data processing. A further possibility is the development of a phase-coherent interferometer.Keywords
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