Semiconductor Physics, Quantum Electronics & Optoelectronics, 28 (4), P. 486–492 (2025).
DOI: https://doi.org/10.15407/spqeo28.04.486
Methodology of measurement of soil nanovibrations using a laser Doppler vibrometer for the detection of buried explosive objects
L.V. Borkovska1, V.P. Kyslyi1, V.O. Morozhenko1, Yu.G. Serozhkin1, E.O. Soloviev1, V.M. Nastych2
1V. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, 41 Nauky Avenue, Kyiv, Ukraine
2State Enterprise for Special Instrument-Building “ARSENAL”, 8 Princes of Ostrozki Street, Kyiv, Ukraine
*Corresponding author e-mail: l_borkovska@ukr.net
Abstract. The work aims to develop an advanced acousto-optical method for detection of explosive objects buried in the soil. It is based on measuring mechanical nanovibrations of the soil using a laser Doppler vibrometer (LDV). The non-destructive peculiarity of the method and the possibility of remote sensing are of particular importance in the context of humanitarian demining. This work provides a detailed examination of the design, operating principle, and mathematical background for the signal processing of the LDV developed at the V. Lashkaryov Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine. It is theoretically shown that for this device, the precision of vibration measurement is tenths of a nanometer within the vibration frequency range of 50…1000 Hz. The method of device calibration and determination of the empirical coefficients for calculating the amplitude of the measured vibrations is described. An example of a laboratory experimental study of the vibrations of a surface of moist soil with a buried full-size plastic simulant of Soviet anti-personnel mine PMN-2 stimulated by acoustic wave irradiation is presented.
Keywords: laser Doppler vibrometer, buried landmine detection, humanitarian demining.
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