On Viewing Small-Size Objects in Dispersive Medium Using Laser Systems with Pulse Illumination

The image transfer in the dispersive medium is considered for the most common case when the source of the active pulse illumination has a wide directional diagram, but the directed receiver, forming an image element, has a narrow one. Within the framework of small angle approximation some optical relations are obtained to compute the contrast of a small-size object while viewing it against an extensive background in the dispersive medium. It is shown that with the certain correlation between the object size and medium parameters the small-size image contrast increases.