Rapid calculation of antenna noise temperature in offset Gregorian reflector systems

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dc.contributor.authorDe Villiers, Dirk I. L.en_ZA
dc.contributor.authorLehmensiek, Roberten_ZA
dc.date.accessioned2016-07-14T08:51:07Z
dc.date.available2016-07-14T08:51:07Z
dc.date.issued2015
dc.descriptionCITATION: De Villiers, D. I. L. & Lehmensiek, R. Rapid calculation of antenna noise temperature in offset Gregorian reflector systems. IEEE Transactions on Antennas and Propagation, 63(4):1564-1571, doi:10.1109/TAP.2015.2399933.
dc.descriptionThe original publication is available at http://ieeexplore.ieee.org
dc.description.abstractAntenna noise temperature calculations of reflector systems is often a slow process and makes direct optimization of the sensitivity of these systems a difficult and time consuming task. This paper presents an improvement to a recently proposed method to speed up these calculations by several orders of magnitude for large dish systems. The accuracy of the improved method is tested for several types of offset Gregorian systems, and errors are shown to be in the order of a few percent. Comparisons of several layers of simplification to a standard brightness temperature model are also presented to aid the designer in the choice of model complexity to use.en_ZA
dc.description.versionPost print
dc.format.extent8 pages
dc.identifier.citationDe Villiers, D. I. L. & Lehmensiek, R. Rapid calculation of antenna noise temperature in offset Gregorian reflector systems. IEEE Transactions on Antennas and Propagation, 63(4):1564-1571, doi:10.1109/TAP.2015.2399933
dc.identifier.issn0018-926X (online)
dc.identifier.urihttp://hdl.handle.net/10019.1/99185
dc.language.isoen_ZAen_ZA
dc.publisherInstitute of Electrical and Electronics Engineers
dc.rights.holderInstitute of Electrical and Electronics Engineers
dc.subjectNoise temperatureen_ZA
dc.subjectRadio astronomyen_ZA
dc.subjectReflector antennasen_ZA
dc.subjectAntenna feedsen_ZA
dc.titleRapid calculation of antenna noise temperature in offset Gregorian reflector systemsen_ZA
dc.typeArticleen_ZA
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