A gain-stabilizing detector for use in radio astronomy

Details A gain-stabilizing detector for use in radio astronomy A gain-stabilizing detector for use in radio astronomy

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975rsci...46..169y&link_type=abstract

Review of Scientific Instruments, vol. 46, Feb. 1975, p. 169-179.

Astronomy and Astrophysics

Astronomy

4

Automatic Gain Control, Data Reduction, Power Gain, Radio Astronomy, Radiometers, Signal Stabilization, Background Noise, Feedback Circuits, Frequency Response, Noise Reduction

Scientific paper

Excess noise in total-power radiometers, its origin, and its effect on continuum radio astronomy measurements during data reduction are discussed. The theory of a new type of noise-adding radiometer is presented, and the resulting practical application of the theory in the form of a gain-stabilizing detector is described. It is shown that the performance of this type of noise-adding radiometer can be optimized, quite simply, to yield an effective system temperature which is less than that of an ideal Dicke system.

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