Experimental study demonstrates 3D temperature distribution mapping using correlation and noncorrelation acoustic sensor arrays, indicating rapid ten-second thermal profile reconstruction.
The correlation and noncorrelation methods for the reception of thermal acoustic radiation are tested experimentally. For the correlation reception, a formula is obtained for calculating the temperature distribution of an object from the measured crosscorrelation pressure functions of thermal acoustic radiation. Noncorrelation measurements with the use of two mutually perpendicular planar arrays, each consisting of seven sensors, have made it possible to determine the parameters of the 3D temperature distribution. The measurement duration is 10 s.
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Аносов et al. (2010) studied this question.
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