Research On Terminal Maneuver Penetration Strategy Of Ballistic Missile With Active Decoy

With the increasing development and the actual deployment in the global scope of U.S.anti-missile defense system,the penetration strategy of ballistic missiles has been the focus of academic research in recent years.According to the division of ballistic missile flight phase,the penetration strategy of ballistic missiles can be divided into boosting phase penetration,mid-course penetration and terminal phase penetration.The different flight phases have corresponding means of penetration,for example,the boost phase allows the projectile to spin against the laser anti-missile system,the mid-course can release of decoys in batches,and the terminal phase can employ reentry maneuver.This paper is the study of the terminal penetration strategy for ballistic missiles.On the whole,the terminal penetration strategy can be divided into two kinds: kinematics strategy and electromagnetism strategy.The kinematic strategy is the design of the terminal motion,which makes it difficult to predict the trajectory of the missile.The electromagnetic strategy suppresses or deceives anti-missile missile borne radar seeker,so that the enemy radar can not track the target effectively.Through individual or comprehensive use of these two means,the purpose of terminal penetration can be achieved.Firstly,the study of terminal penetration strategy requires a complete platform for attack and defense,including kinematics and electromagnetics.Therefore,the ballistic missile kinematics model is established in the launch coordinate system,and the reentry maneuver is modeled.The reentry trajectory is divided into inertial section,flat flight section and terminal guidance section,through which improves the penetration ability of reentry stage and ensures the impact precision.Through the whole trajectory simulation,the reliable terminal trajectory data of the offensive ballistic missile are obtained.Secondly,based on the basic parameters of the U.S.PAC-3 missile,the kinematic model of the terminal anti-missile interceptor is established.Modern advanced anti-missile interceptors destroy targets by direct collision of kinetic energy,therefore,the traditional proportional navigation law has been improved,and the predictive intercept point midcourse guidance and terminal guidance are obtained,so that the miss distance meets the requirements of kinetic energy direct collision.Through the above steps,a complete kinematic model of the attacker and the defense is obtained.Thirdly,in order to establish electromagnetic warfare platform,based on the performance parameters of PAC-3 interceptor seeker,the feed antenna model,detection probability model and signal processing model of the interceptor borne single pulse Doppler radar seeker are established,which provides a blueprint for the design of active radar decoy.On the basis of the above models,noise type active decoy,range-velocity synchronous deception active decoy,and angle deception active decoy are designed.Through the above steps,a complete electromagnetic countermeasure model is established between the attacker and the defense.Finally,in order to evaluate the effectiveness of various penetration strategies,this paper designs five kinds of attack and defense simulation scenarios.Through the comparative analysis of the miss distance,the validity of the terminal penetration strategies of reentry maneuver,noise type active decoy,range-velocity synchronous deception active decoy,and angle deception active decoys is verified,and some constructive conclusions are obtained.There are many methods of terminal penetration strategies for ballistic missiles.This paper only models and simulates some typical penetration methods,and needs further study in the future.