Estimation-based guidance of missiles against targets with towed decoys

To attack targets with towed decoys, a method of estimation of line-of-sight angle rate in precision guidance process is proposed. The motion model of the target and the towed decoy is established as the basis of estimation of the line-of-sight angle. Then the estimate of line-of-sight angle rate is obtained by means of observation from the high-gain observer for a second-order system. Finally, a simulation using the guidance law of proportional navigation is given, and the result proves the feasibility of the method of guidance information estimation in attacking a non-maneuvering target with a towed decoy.