Application of Time Slice to an Imaging System Using Acoustic Holography

Acoustic holography has attained a high lateral resolution but a poor axial resolution. In this study, to achieve the high axial resolution, time slice is applied to an imaging system using acoustic holography. The time slice can select the reflected signals from objects at different distances. In this method, the sampling interval of detected signal decides the axial resolution, and the aperture of the transducer decides the lateral resolution. The result of a simulation shows good axial and lateral resolutions. The method uses only one specified frequency which matches with narrow-band transducers.