A method for the sensitivity improvement of radio astronomy receivers

Details A method for the sensitivity improvement of radio astronomy receivers A method for the sensitivity improvement of radio astronomy receivers

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ije....39..513g&link_type=abstract

International Journal of Electronics, vol. 39, Nov. 1975, p. 513-523.

Astronomy and Astrophysics

Astronomy

Radio Astronomy, Radiometers, Signal To Noise Ratios, Transmission Lines, Noise Temperature, Radio Receivers, Sensitometry, Signal Processing

Scientific paper

The signal-to-noise ratio of radio astronomy receivers can be optimized and the sensitivity improved by reshaping the waveform of the signal received from the antenna by processing it through a transmission line in which the velocity of propagation can be made to vary as the signal enters or leaves the line. Presented here is the complete analysis of the determination of the minimum detectable temperature in the case of a total power radiometer incorporated with time-varying transmission lines. A comparison of the two sensitivity figures of the total power radiometers with and without such transmission lines is also given.

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