Geoacoustic inversion from vector hydrophone array in shallow water

A geoacoustic inversion scheme,which is by virtue of a vector hydrophone array,has been proposed based on the fact that the vector hydrophone can provide more acoustic field information than the traditional pressure hydrophone.The transmission losses of particle velocities is discussed.The sediment sound speed is acquired by a matched-field processing(MFP) procedure,which is the combined optimization of the pressure field and vertical velocity field.And the bottom attenuation can be estimated from the difference between transmission loss of the the vertical velocity and that of the pressure.The inversion method based on vector hydrophone array mainly has two advantages:one is that the MFP method based on the vector field can decrease the uncertain estimation of the sediment sound speed;the-another is that the inverted sediment attenuation is independent of source level.The validity of the inverted parameters have been examined by-comparing-numerical results and experimental data.