Localisation de microparticules dans un volume par holographie digitale et synthese d’ouverture

Abstract

Although the digital holography (DH) has been demonstrated to be a useful tool in different fields such as fluid mechanics, however, because of the limited number and size of pixels in a CCD detector, it is difficult to satisfy simultaneously the sampling condition in the recording step and the condition of reconstruction. In addition, resolution and viewing angle by digital holography are significantly lower than in traditional holography. Various solutions have been proposed to solve this problem but remain insufficient. The technique of synthetic aperture used mainly in radar imagery seems to be able to give a . This work has as main aim to discover this technique and implement it to solve the problem.