Increasing speckle noise immunity in LDV-based acoustic mine detection

Paul M. Goggans; C. Ray Smith; Ning Xiang

doi:10.1117/12.396300

22 August 2000 Increasing speckle noise immunity in LDV-based acoustic mine detection

Paul M. Goggans, C. Ray Smith, Ning Xiang

Proceedings Volume 4038, Detection and Remediation Technologies for Mines and Minelike Targets V; (2000) https://doi.org/10.1117/12.396300
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

Probability as logic is used to estimate the surface velocity of a patch of soil driven by an incident acoustic wave. The data used by the estimation procedure is obtained from a laser Doppler vibrometer (LDV). The output of the LDV is an intermediate-frequency carrier that is frequency- modulated by the soil surface velocity. Additionally, the LDV output is amplitude modulated by an undesirable variation in the returned laser signal due to dynamic optical speckle. The effect of the amplitude modulated by an undesirable variation in the returned laser signal due to dynamical optical speckle. The effect of the amplitude modulation on the estimate of the soil surface velocity is illustrated with results obtained using the Markov chain Monte Carlo method.

Citation Download Citation

Paul M. Goggans, C. Ray Smith, and Ning Xiang "Increasing speckle noise immunity in LDV-based acoustic mine detection", Proc. SPIE 4038, Detection and Remediation Technologies for Mines and Minelike Targets V, (22 August 2000); https://doi.org/10.1117/12.396300

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