1. An electro-optical system for measuring a range to a moving target comprising: (a) a stationary pair of optical lenses, each lens in said pair of optical lenses oriented along a line of sight towards the target, said pair of optical lenses positioned a predetermined width apart along a common base line; (b) at least one light sensitive device responsive to light from each lens in said pair of optical lenses for forming first and second one dimensional images of said target, said first and second one dimensional images being simultaneously formed on respective first and second linear pixel arrays; (c) a video correlator for comparing said first and second one dimensional images on said first and second linear pixel arrays to find an offset pixel shift between said first and second linear pixel arrays, said offset pixel shift being proportional to an offset distance needed to produce coincidence between said first and second one dimensional images; and (d) a calculator for determining said range to the target as a trigonometric function of said offset distance and said predetermined width between said pair of optical lenses.