Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-05T16:10:25.200Z Has data issue: false hasContentIssue false

Standard Gain Horns for Solar Calibration

Published online by Cambridge University Press:  25 April 2016

R. Wielebinski*
Affiliation:
School of Electrical Engineering, University of Sydney

Extract

The accuracy of the absolute value of solar flux depends on the temperature calibration techniques and the knowledge of the gain of the aerial used for the measurements. Recent advances in low-noise receivers, microwave components, and amplifier stability have reduced considerably the errors due to temperature calibration techniques. At present the knowledge of the gain of the aerial used for calibrations (usually a pyramidal horn) presents the largest source of doubt of an absolute calibration. Investigations of this problem suggest that a ‘standard gain horn’ should be employed at all observatories in absolute solar calibrations.

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Tanaka, H., and Kakinuma, T., Proceedings XVth General Assembly URSI, 1314 (1966).Google Scholar
2 Krüger, A., Proceedings XVth Generai Assembly URSI, 1325 (1966).Google Scholar
3 Landecker, T. L., Inf. Bull. Solar Radio Obs., in press.Google Scholar
4 Yates, K. W., and Wielebinski, R., Aust. J. Phys., 19, 389 (1966).Google Scholar
5 Schelkunoff, S. A., ‘Electromagnetic Waves’, pp. 360365, Van Nostrand, New York, 1943.Google Scholar
6 Jull, E. V., and Deloli, E. P., Trans. IEEE, AP-12, 439 (1964).Google Scholar
7 Chu, T. S., and Semplak, R. A., Bell Sys. Tech. Journal, 44, 527 (1965).Google Scholar
8 Price, R. M., Ph.D. thesis, Australian National University, Canberra, 1965.Google Scholar
9 Russo, P. M., Rudduck, R. C., and Peters, L. Jr., Trans. IEEE, AP-13, 219 (1965).Google Scholar
10 Yu, J. S., Rudduck, R. C., and Peters, L. Jr., Tram. IEEE, AP-14, 138 (1966).Google Scholar