Background variations in millimeter wave telescopes due to the radome structure

Details Background variations in millimeter wave telescopes due to the radome structure Background variations in millimeter wave telescopes due to the radome structure

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980stin...8218489t&link_type=abstract

Presented at URSI Symp. on Millimeter Wave Technol., Grenoble, France, 1980

Astronomy and Astrophysics

Astronomy

Background Noise, Millimeter Waves, Radio Telescopes, Radomes, Atmospherics, Flux Density, Horn Antennas, Radio Sources (Astronomy), Sensitivity

Scientific paper

The difference between measured and theoretical standard deviations of atmospheric fluctuations in radome covered telescopes used in dual beam radio source flux measurements is discussed. The main reason for this increased deviation is shown to be background noise from the telescope surroundings, which is reflected from the radome frame. A so-called synchronous tracking method is introduced for eliminating the effect of the background. A higher tapering of the feed horn is possible, but lowers the total efficiency of the telescope.

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