Characterization of buried objects using wideband signals

摘要: This paper deals with buried object localization using a towed flexible array of sensors. We consider new model by taking into account both the reflection and refraction wave at water-sediment interface. A directional vector containing bearings ranges objects is proposed instead classical plane used in MUSIC algorithm. To decorrelate received signals to estimate coherent signal subspace fast focusing operator proposed. The robust DIRECT (DIviding RECTangles) method accelerated spline interpolation applied simultaneously presence phase errors. performance developed methods investigated on experimental data recorded during underwater acoustics experiments.