The method described attempts to remotely identify the shape of an anthropogenic object,
such as a wreck of a modern vessel, using reflectivity data from Multi-Beam Echosounder …

In this paper a numerical discretization and transformation into the time domain of a hybrid
Kirchhoff/diffraction method is presented for the modeling of high-frequency pulse scattering …

Segmentation of the seabed is addressed by exploiting the local angular backscatter
acoustic responses of the bottom. The study is based on data collected at sea with an …

Broadband acoustic analysis of scattering from sharp density gradients in the water column
generally treat the interfaces as smooth surfaces. However, these interfaces may exhibit …

The problem of calibrating parametric sonar systems at low difference frequencies used in
backscattering applications is addressed. A particular parametric sonar is considered: the …

We present calculations of acoustic scattering from an aluminum cylinder near a rough
interface computed using the elastodynamic finite integration technique (EFIT): a time …

Roughness is a characteristic of a surface that is a function of its geometry. Ultrasonic
sensing in air provides range, area, and angle information because the surface geometry …

Sea bottom classification using echosounders is an active field of research, where many
different methods (to define echo features or perform their statistical classification) have …

Bottom classification based on echo features and multivariate statistics is now a well
established procedure for habitat studies and other purposes, over a depth range from about …

Parametric sonars are instruments capable of transmitting acoustic signals in the water with
a very narrow beam and almost no sidelobes. These features are exploited in this paper to …