Abstract
TM65m radio telescope Ku and Ka-band antenna pointing, subreflector model, efficiency, sensitivity, and system noise temperature performance are reported in this paper. The key indicators of radio astronomy receiving system are introduced firstly. Secondly the band measurement essential points are discussed these are point and sub-reflector model construction and atmosphere influence. The antenna efficiency, sensitivity and system noise temperature of the two bands are described finally. The measurement results show that in the Ku and Ka-band, in the middle of the elevation, Ku-band efficiency can be controlled to 60%, Ka-band can be controlled to 38%. And in the higher and lower elevations, there is a significant decline in the efficiency since the main surface deformation.
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