IMAGING DIFFUSER-OBSCURED OBJECTS BY MAKING COHERENCE MEASUREMENTS ONENHANCED BACKSCATTER RADIATION

An image of a planar object obscured by a moving diffuser can be obtai ned if the diffuser is illuminated by a spatially coherent quasi-monoc hromatic plane wave and coherence measurements are made on the wave fi eld reflected by the object back through the diffuser. The image distr ibution is given by the intensity that would be observed were the obje ct illuminated directly by a plane wave and the reflected wave allowed to propagate one half of the diffuser-object distance.