Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...198..370n&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 198, no. 1-2, June 1988, p. 370-374.
Astronomy and Astrophysics
Astrophysics
2
Image Correlators, Image Processing, Radio Interferometers, Real Time Operation, Solar Radio Emission, Spectroheliographs, Analog To Digital Converters, Brightness Temperature, Digital Integrators, Microwave Imagery, Radio Telescopes
Scientific paper
A description is given of a new back-end processor for the λ 8-cm radioheliograph at Toyokawa. By the introduction of this system, the λ 8-cm radioheliograph is changed from the swept-lobe type to the multi-correlator type. Two-dimensional and one-dimensional solar radio images are displayed on a graphic terminal in real time at the rate of 10 s/image. On the other hand, correlation data, that is spatial frequency components of these images, are stored on a data storage sytem at the rate of 0.1 s/image for off-line analysis. Comparing the images obtained by using the new back-end and the original swept-lobe typ back-end, it is confirmed that in two-dimensional observations the improvement greater than 1000 times in the time resolution is achieved without sacrificing the sensitivity.
Enome Shinzo
Kobayashi Sachio
Nishio Masanori
Shibasaki Kazuo
Tsukiji Y.
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