Abstract: An integrated design method of guidance law， fuze and warhead for conventional fragment warhead is studied to achieve the reliable interception of high maneuvering target in space in the presence of guidance blind zone of air defense missile. Under the condition that the maximum maneuverability of target is known as prior information, the potential motion state set of target in blind guidance zone is estimated from maximum maneuverability of target, a mathematical model of fragment dispersion is established, and the optimal intersection state of air defense missile and the optimal detonate time of fuze are solved according to the target state and the characteristics of fragment dispersion. The Gauss pseudo-spectral method is used to solve the real-time optimal control problem of missile with the constraints of the relative position of terminal missile and target, the line-of-sight angle of missile and the angle of velocity vector, so that the air defense missile can reach the optimal interception state. The simulation analysis shows that the integrated design method of guidance law, fuze and warhead can realize the optimal control of fuze and the reliable interception of target, and provide the basis for warhead design. Key

Key words: airdefencemissile, targetinterception, guidanceintegratedfuzing, fuze-warheadcoordination, Gausspseudo-generalmethod