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A Microwave Radiometer with Postdetection Pulse-Width Modulation

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Abstract

A microwave radiometer with additional pulse-width modulation of the reference signal is described. The pulse-width modulation is performed in the low-frequency unit using resistive attenuators with different division factors of the reference signal. The radiometer implements a modification of the null measurement method when the automatic control is attained by varying duration of a pulsed signal. Changing the radiometer low-frequency circuit to the null-balance mode allows us to use high-frequency units of any chopper radiometer with symmetric modulation.

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REFERENCES

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Authors and Affiliations

  1. Chita Engineering Geocryology Laboratory, Mel'nikov Permafrost Institute, Siberian Division, Russian Academy of Sciences, a/ya 539, Chita-10, 672010, Russia

    A. V. Filatov

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  1. A. V. Filatov
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Filatov, A.V. A Microwave Radiometer with Postdetection Pulse-Width Modulation. Instruments and Experimental Techniques 45, 71–77 (2002). https://doi.org/10.1023/A:1014508511509

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  • DOI: https://doi.org/10.1023/A:1014508511509

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