Real-time, very-long-baseline interferometry based on the use of a communications satellite

Details Real-time, very-long-baseline interferometry based on the use of a communications satellite Real-time, very-long-baseline interferometry based on the use of a communications satellite

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sci...198..289y&link_type=abstract

Science, vol. 198, Oct. 21, 1977, p. 289-291. Research supported by the National Research Council of Canada and NSF.

Astronomy and Astrophysics

Astronomy

7

Communications Technology Satellite, Interferometry, Radio Astronomy, Radio Interferometers, Bandwidth, Data Links, Data Processing, Delay Lines (Computer Storage), Magnetic Tapes, Real Time Operation

Scientific paper

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.

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