Patent ID: 6061017
Filing Date: 2000-05-09
Classification: G01S

Abstract:
An active radar augmentation system adapted for use in a target to direct a radar guided missile to said target, said active radar augmentation system comprising:a receiving antenna mounted in said target for receiving radar signals from said radar guided missile;amplifying means for amplifying said radar signals;a transmitting antenna connected to said amplifying means for transmitting said radar signals as a return signal to said radar guided missile to guide said radar guided missile to said target, said transmitting antenna being mounted in said target;switching means for receiving said radar signals and a square wave signal having a predetermined on-off time period, said square wave signal opening and closing said switching means isolating said transmitting antenna from said receiving antenna to prevent a radio frequency feedback signal transmitted by said transmitting antenna from combining with said radar signals received by said receiving antenna;the return signal from said transmitting antenna having a gain G calculated in accordance with the following equation:G=G.sub.R .multidot.A.multidot.G.sub.Twhere G.sub.R is the gain of said receiving antenna, A is the gain of said amplifying means and G.sub.T is the gain of said transmitting antenna.