A two-channel radiometer based on the null measurement method

A two-channel microwave radiometer (with two receivers) for the decimeter wavelength range is described. The null measurement method is realized in this instrument through application of combined pulse (amplitude and pulse-width) modulation. The use of a special algorithm for forming signals control...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2009, Vol.52 (1), p.79-84
Main Authors: Filatov, A. V., Vinokurov, V. M., Misyunas, A. O.
Format: Article
Language:English
Subjects:
Electrical Engineering
Electronics and Radio Engineering
Measurement Science and Instrumentation
Physical Chemistry
Physics
Physics and Astronomy
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Description
Summary:A two-channel microwave radiometer (with two receivers) for the decimeter wavelength range is described. The null measurement method is realized in this instrument through application of combined pulse (amplitude and pulse-width) modulation. The use of a special algorithm for forming signals controlling the pulse-width modulation in each channel reduces the dynamic errors in tracking the changes in the antenna signal.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441209010126