Abstract: A radar target generator is disclosed which is not merely a simulator, generating video information for viewing by an operator, but is designed to be used in conjunction with an operating radar system, actually producing high fidelity radar targets, rather than targets that merely look like radar targets. Thus, it may be used for training of radar operators, as well as for calibrating, maintaining, and evaluating multiple types of radar systems. The system includes a first tap for sampling a portion of the radar signal traveling through a transmission line and redirecting that sample into the radar target generator. There, a central processor applies a target signature component to the sampled radar signal portion, following which a second tap returns the modified radar signal portion to a return radar signal traveling thorough a second transmission line.