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Characteristics of thermal acoustic radiation as a source of acoustic signals

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Abstract

A linear dependence of the output voltage of an acoustic thermometer on the temperature difference between the source and the piezoelectric transducer is demonstrated experimentally. The constant component of the output voltage is determined by the noise temperature of the receiving device. The main feature of the thermal acoustic radiation as a source of acoustic signals is that the signal is represented not by the total thermal radiation of the object, which is proportional to the absolute temperature of the latter, but by the part of this radiation that is proportional to the temperature difference between the object and the transducer.

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Authors and Affiliations

  1. ELDIS Research Center, Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Starosadskii per. 8, Moscow, 101000, Russia

    A. A. Anosov & V. I. Pasechnik

  2. Sechenov Medical Academy, Moscow

    A. A. Anosov

Authors
  1. A. A. Anosov
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  2. V. I. Pasechnik
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Translated from Akusticheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 48, No. 1, 2002, pp. 16–21.

Original Russian Text Copyright © 2002 by Anosov, Pasechnik.

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Anosov, A.A., Pasechnik, V.I. Characteristics of thermal acoustic radiation as a source of acoustic signals. Acoust. Phys. 48, 12–17 (2002). https://doi.org/10.1134/1.1435383

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  • DOI: https://doi.org/10.1134/1.1435383

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