Underwater 3D imaging by FFT dynamic focusing beamforming
Vittorio Murino, Andrea Trucco · 2002
Describes an application of the dynamic focusing technique for underwater 3D acoustic imaging. In particular, the integration of dynamic focalization with an FFT implementation of phase-shift beamforming has been developed in order to avoid an increase in computational complexity. The resulting system, which uses narrow-band signals, permits the formation of 3D images at a high frame rate and without the limitations imposed by the depth of field on fixed-focused beamforming. Some simulations made it possible to test the proposed system, and the related results are reported.>