Velocity-aided range acquisition and tracking in dual-mode CW/FM-CW radar

A technique is described that permits velocity information gained in the CW or interrupted-CW mode of a multimode radar to be fully exploited. In particular, the information is used to produce filters that move to follow changes in the range beat during an FM-CW or interrupted FM-CW mode. These filters are matched to velocity and this results in a considerable increase in the signal to noise ratio. In some applications the technique permits valuable adaptation of the FM sweep time and other parameters.