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Measurement of the Field Pattern of a Radio Telescope using a Geostationary Satellite

Published online by Cambridge University Press:  25 April 2016

H. E. Green
H. E. Green*
Affiliation:
Department of Electrical Engineering RMC Duntroon (Uni. N.S.W.)
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Extract

The conventional method of measuring the radiation diagram of an antenna is to rotate it in the field produced by a fixed point source located in its Fraunhofer zone (Hollis et al. (1970)). With the very large antennas typically used in radio astronomy this presents difficulties. For example, to measure the 64 m telescope at ANRAO, Parkes at frequencies in the OH transition lines band (1.6-1.7 GHz), the source, to be located in the Fraunhofer zone, must be located at least 50 km away and then at a sufficiently high angle to allow measurements free from ground effects to be made. Clearly there are no terrestrial means to accomplish this.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 1 , 1980 , pp. 30 - 33
Copyright
Copyright © Astronomical Society of Australia 1980

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References

Baars, J. W. M., I.E.E.E. Trans., AP-21, 461 (1978).Google Scholar
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