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[Study on the Estimation Algorithm of the Temperature Based on Mid-Wave Infrared Remote Sensing].

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    Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
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    This study introduces a new infrared remote sensing method for accurate, touch-free temperature measurement of objects. The technique uses spectral features to estimate temperature, offering a simpler and more effective alternative to existing systems.

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    Area of Science:

    • Physics
    • Optical Engineering
    • Remote Sensing

    Background:

    • Objects above absolute zero emit infrared radiation according to Planck's law, reflecting their temperature.
    • Mid-wave infrared remote sensing offers fast, high-resolution, touch-free temperature measurement for various objects.

    Purpose of the Study:

    • To develop a novel optical system for infrared (IR) image-spectrum integration remote sensing.
    • To establish a simple and effective method for estimating object temperatures using spectral features.

    Main Methods:

    • Acquired infrared emission spectra from metals at different temperatures using a new IR image-spectrum integration system.
    • Extracted four key spectral features: center of gravity position, peak position, and two wavelength values (λ1, λ2).
    • Developed a multiple linear regression model to correlate spectral features with temperature.

    Main Results:

    • The method successfully distinguished between hot objects with significant temperature differences.
    • Achieved an absolute error of less than 30 ℃ within the experimental temperature range.
    • Demonstrated 98% accuracy for measurements with less than 20 ℃ error, surpassing conventional systems.

    Conclusions:

    • The developed method provides a simple, effective, and accurate approach for remote temperature estimation.
    • This technique offers advantages over traditional methods by reducing reliance on complex parameters like emissivity and atmospheric transmittance.
    • The findings suggest expanded applications for infrared remote sensing in temperature measurement.