The Moon as Source for G/T Measurements
- 1 September 1974
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Aerospace and Electronic Systems
- Vol. AES-10 (5) , 718-727
- https://doi.org/10.1109/taes.1974.307869
Abstract
For large-aperture antennas, it is customary to utilize radio stars in order to determine the receiving gain to temperature ratio. In the case of small-aperture antennas, which not only have reduced gain but usually higher system noise temperature as well, the y factors obtained from the radio star measurements are so small that the measurement error is intolerable. The moon, on the other hand, provides a power flux density higher by at least one order of magnitude compared to the strongest radio star, and the resulting y factors are usable. G/T ratios determined from moon measurements agree well with expected values.Keywords
This publication has 3 references indexed in Scilit:
- Exploring the MoonPublished by Springer Nature ,1968
- The Spectra of the Strongest Non-Thermal Radio Sources in the Centimeter Wavelength Range.The Astrophysical Journal, 1965
- Noise Figure Measurements Using Celestial SourcesIRE Transactions on Space Electronics and Telemetry, 1961