Abstract: A combination passive and active detection system including a passive speed and range detection system able to sense the speed and range of a moving object and an active speed detection system able to sense the speed and range of a moving object. The passive speed detection system is preferably an electro-optical speed and range detection system. The active speed detection system is preferably a laser speed and range detection system. The combination detection system preferably is selectively operable in a dual operational mode, a “passive-only” operational mode, and “active-only” operational mode, a triggering operational mode, and an active recording operational mode.

Abstract: A passive optical speed and distance measuring system includes a pair of camera lenses positioned along a common baseline a predetermined distance apart and controlled by an operator to capture images of a target at different times. The camera lenses are focused on light sensitive pixel arrays which capture target images at offset positions in the line scans of the pixel arrays. A video signal processor with a computer determines the location of the offset positions and calculates the range to the target by solving the trigonometry of the triangle formed by the two camera lenses and the target. Once the range to the target is known at two different times the speed of the target is calculated.