Determination of soil background parameters via acoustic-seismic transfer function

Inversion methods for estimation of geoacoustic model parameters often use the scattered field data for obtaining the properties of viscoelastic layered media. This work presents a method to retrieve soil background parameters using the outdoor acoustic-seismic transfer function (admittance). Clutter in landmine detection is related to with spatial variations of soil parameters, so knowledge of soil parameters and their spatial variability are very important for landmine detection. The resonance method is extended and used for preliminary estimation of a set of parameters for a three-layered ground model. The least squares method is later used to choose the model with the best fit to experimental data. Results of the reconstruction show good agreement with the experimental data. A description of the resonant technique and the experimental setup are presented. The effect of a finite size of the sound sources often used in acoustic landmine detection on the acoustic-seismic transfer function is also discussed.

[1]  Herbert Überall,et al.  Resonance theory of acoustic waves interacting with an elastic plate , 1979 .

[2]  Lee N. Bolen,et al.  The acoustic transfer function at the surface of a layered poroelastic soil , 1986 .

[3]  M. Fokina.  RESONANCES OF ACOUSTIC WAVES INTERACTING WITH AN ELASTIC SEABED , 2001 .

[4]  J. E. Piercy,et al.  Outdoor sound propagation over ground of finite impedance , 1976 .

[5]  N. Harrop,et al.  The exploitation of acoustic-to-seismic coupling for the determination of soil properties , 2000 .

[6]  Henrik Schmidt,et al.  Efficient numerical solution technique for wave propagation in horizontally stratified environments , 1985 .

[7]  John A. Orcutt,et al.  Acoustic pulse propagation above grassland and snow: Comparison of theoretical and experimental waveforms , 1990 .

[8]  Stan E. Dosso,et al.  An adaptive-hybrid algorithm for geoacoustic inversion , 2001 .

[9]  Ravindra N. Gupta,et al.  Reflection of elastic waves from a linear transition layer , 1966 .

[10]  Peter Gerstoft,et al.  Full Field Inversion Methods In Ocean And Seismo Acoustics , 1995 .

[11]  John A. Orcutt,et al.  Observations of low‐frequency acoustic‐to‐seismic coupling in the summer and winter , 1989 .

[12]  Bjoern Ursin,et al.  Review of elastic and electromagnetic wave propagation in horizontally layered media , 1983 .

[13]  Clint W. Frasier,et al.  Discrete time solution of plane P-SV waves in a plane layered medium. , 1970 .

[14]  Yvan Champoux,et al.  On acoustical models for sound propagation in rigid frame porous materials and the influence of shape factors , 1992 .

[15]  J. W. Dunkin,et al.  Computation of modal solutions in layered, elastic media at high frequencies , 1965 .

[16]  N. A. Haskell.  The Dispersion of Surface Waves on Multilayered Media , 1953 .

[17]  A. J. Robins,et al.  Plane-wave reflection from a solid layer with nonuniform density, sound speed, and shear speed , 1998 .

[18]  Sven Ivansson,et al.  Low-frequency slow-wave dispersion computations by compound-matrix propagation , 1999 .

[19]  J. E. Piercy,et al.  Effective flow resistivity of ground surfaces determined by acoustical measurements , 1983 .

[20]  Alvin J. Robins.  Generation of shear and compression waves in an inhomogeneous elastic medium , 1994 .

[21]  Jon F. Claerbout,et al.  Synthesis of a layered medium from its acoustic transmission response , 1968 .

[22]  Freeman Gilbert,et al.  Propagator matrices in elastic wave and vibration problems , 1966 .

[23]  Lee N. Bolen,et al.  The interaction of airborne sound with the porous ground: The theoretical formulation , 1986 .

[24]  Peter Gerstoft,et al.  GLOBAL INVERSION BY GENETIC ALGORITHMS FOR BOTH SOURCE POSITION AND ENVIRONMENTAL PARAMETERS , 1994 .

[25]  W. Thomson,et al.  Transmission of Elastic Waves through a Stratified Solid Medium , 1950 .

[26]  Daniel H. Cress,et al.  Coupling of airborne sound into the earth: Frequency dependence , 1980 .

[27]  E. N. Thrower.  The computation of the dispersion of elastic waves in layered media , 1965 .

[28]  D. Albert.  Attenuation of Outdoor Sound Propagation Levels by a Snow Cover , 1993 .

[29]  James M. Sabatier,et al.  Probe microphone instrumentation for determining soil physical properties: testing in model porous materials , 1996 .