Abstract: An apparatus and a method for enhancing the radar cross section of a target. The present invention is an impulse radar system that implements a method that comprises the following steps. A pilot impulse radar pulse is transmitted at a target. The pilot pulse comprises a plurality of individual pulses having respective distinct frequencies generated by the impulse radar system. A return pulse from the target is received by the impulse radar system and provides information indicative of target scattering centers. The return pulse is used as a calibration signal for generating a phase conjugated pulse. The phase conjugated pulse is then transmitted at the target. Processing a target return signal derived from the transmitted phase conjugated pulse enhances the radar cross section of the target because the waveform of the transmitted phase conjugated pulse is matched to the characteristics of the target.

Abstract: A game comprising of a game board in combination with playing cards and playing tokens and wherein the game board is inscribed with a plurality of contiguous or adjacent squares with each square having an individual and distinctive number imprinted thereon, and corresponding numbers being provided for the individual playing cards. The numbers inscribed on the game board are preferably arranged in such a manner that the number of least numerical value is disposed at the central portion of the game board, and the numbers increase in value toward the outer periphery of the game board. Each player is provided with a prescribed number of playing cards, face down, and the remaining cards are placed together in a pack.