Title :
Filtering interpretation of acoustic inverse scattering under coherent and incoherent insonification
Author :
Borghi, Riccardo ; Cincotti, Gabriella ; Gori, Paola ; Pappalardo, Massimo
Author_Institution :
Dipartimento di Ingegneria Elettronica, Rome Univ., Italy
Abstract :
The reconstruction process of two-dimensional and three-dimensional sound-soft obstacles from a set of scattered field measurements is formulated as a linear filtering problem. Under coherent and incoherent insonification, the impulse response of the equivalent filter completely characterizes the acoustical imaging process. An energy-based criterion is proposed to describe the impulse response features in both cases. Numerical simulations are also presented, showing the better performance of the incoherent insonification.
Keywords :
acoustic applications; acoustic imaging; acoustic signal processing; acoustic wave scattering; filtering theory; image reconstruction; inverse problems; numerical analysis; transient response; 2D sound-soft obstacles; 3D sound-soft obstacles; acoustic inverse scattering; acoustical imaging; acoustical propagation; coherent insonification; energy-based criterion; equivalent filter; impulse response; incoherent insonification; inverse scattering; linear filtering; numerical simulation; reconstruction; scattered field measurements; Acoustic imaging; Acoustic measurements; Acoustic scattering; Approximation methods; Filtering; Image reconstruction; Inverse problems; Maximum likelihood detection; Nonlinear filters; Numerical simulation;
Journal_Title :
Oceanic Engineering, IEEE Journal of
