Laser-induced acoustic detection of buried objects

McKnight, Stephen W.; DiMarzio, Charles A.; Liu, Wen; Hogenboom, Daniel O.; Sauermann, G.

doi:10.1117/12.324253

Cited by 2 publications

(4 citation statements)

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“…A vibrating thin plate is considered as a similar model. It is one of the most frequently analyzed mathematical problems, and its detailed analysis can be found elsewhere [5][6][7] . Assuming separate solutions for the radial and tangential terms, Equation (2) can be converted into a system of three differential equations of the second order.…”

Section: Laser Absorption In Soil and Generation Of Seismic Wavesmentioning

confidence: 99%

“…This is valid for a variety of soil types including soils with ferromagnetic content. The energy of the soil seismic waves used for buried landmine detection is supplied by an impulse high power solid state laser 1,7 . The vibration of the soil is generated by a short laser pulse that heats the surface.…”

Section: Introductionmentioning

confidence: 99%

“…Since World War II, especially in the last time, since Vietnam -Indochina conflict, and mostly since Afghanistan and Iraq antiterrorist war, reliable and rapid detection of buried land mines (antitank mines -ATM or antipersonnel mines -APM) is a challenging task for the military as well as the civilian community [1][2][3][4][5][6][7][8][9][10] . In this paper a theoretical analysis based on numerical simulation of the main parts and of the whole system performed for a laser-acoustic device dedicated for detection of buried landmine detection is presented.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of a laser-acoustic landmine detection system

et al. 2012

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The preliminary numerical simulation results obtained in the analysis of a landmine detection system based on laser excitation of acoustic -seismic waves in the soil and observing its surface vibration above the embedded landmine are presented. The presented numerical simulations comprise three main parts: 1) Laser oscillator and laser beam propagation and absorption in soil; a laser oscillator operated in Q-switched regime is considered; different laser wavelengths are investigated. 2) Acoustic -seismic wave generation by absorption in soil of laser pulse energy; 3) Evaluation of acoustic -seismic wave generation by the buried in soil landmine; 4) Comparison of Distributed FeedBack Fiber Laser (DFB-FL) and Laser Doppler Vibrometer (LDV) detector used for soil vibrations evaluation. The above mentioned numerical simulation is dedicated for evaluation of an integrated portable detection system.

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Section: Laser Absorption In Soil and Generation Of Seismic Wavesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of a laser-acoustic landmine detection system

et al. 2012

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“…One of the more successful approaches involves the use of acoustic waves or mechanical vibrations for penetrating or exciting the ground surface. [1][2][3][4][5][6][7][8] While some of these approaches are still being investigated under laboratory conditions, this paper emphasizes field measurement results achieved using a laser Doppler vibrometer-based acoustic-to-seismic technique 1 to locate antipersonnel mines.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on antipersonnel landmine detection using acoustic-to-seismic coupling

Xiang

Sabatier²

2003

The Journal of the Acoustical Society of America

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An acoustic-to-seismic system to detect buried antipersonnel mines exploits airborne acoustic waves penetrating the surface of the ground. Acoustic waves radiating from a sound source above the ground excite Biot type I and II compressional waves in the porous soil. The type I wave and type II waves refract toward the normal and cause air and soil particle motion. If a landmine is buried below the surface of the insonified area, these waves are scattered or reflected by the target, resulting in distinct changes to the acoustically coupled ground motion. A scanning laser Doppler vibrometer measures the motion of the ground surface. In the past, this technique has been employed with remarkable success in locating antitank mines during blind field tests [Sabatier and Xiang, IEEE Trans. Geosci. Remote Sens. 39, 1146-1154 (2001)]. The humanitarian demining mission requires an ability to locate antipersonnel mines, requiring a surmounting of additional challenges due to a plethora of shapes and smaller sizes. This paper describes an experimental study on the methods used to locate antipersonnel landmines in recent field measurements.

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Laser-induced acoustic detection of buried objects

Cited by 2 publications

References 1 publication

Numerical simulation of a laser-acoustic landmine detection system

Numerical simulation of a laser-acoustic landmine detection system

An experimental study on antipersonnel landmine detection using acoustic-to-seismic coupling

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