Absolute flux density calibrations: Receiver saturation effects

Details Absolute flux density calibrations: Receiver saturation effects Absolute flux density calibrations: Receiver saturation effects

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978dsn..nasa..123f&link_type=abstract

In its The Deep Space Network p 123-129 (SEE N78-32137 23-12)

Astronomy and Astrophysics

Astronomy

Calibrating, Flux Density, Radio Sources (Astronomy), Radiometers, Saturation, Antenna Radiation Patterns, Error Analysis, Models, Radio Receivers

Scientific paper

The effect of receiver saturation was examined for a total power radiometer which uses an ambient load for calibration. Extension to other calibration schemes is indicated. The analysis shows that a monotonic receiver saturation characteristic could cause either positive or negative measurement errors, with polarity depending upon operating conditions. A realistic model of the receiver was made by using a linear-cubic voltage transfer characteristic. The evaluation of measurement error for this model provided a means for correcting radio source measurements.

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