| As a long-range precision strike weapon,cruise missiles have gradually become an important direction for weapons research in many countries.Its characteristics of ultra-low altitude and strong maneuverability also pose great threats and challenges to missile defense systems.Therefore,research on early warning detection methods and trajectory tracking methods for cruise missiles will be of great significance for improving the missile defense system performance.In this dissertation,thinking of the strong maneuverability of cruise missiles at the end of attack,the research on the tracking method of cruise missile is displayed.Firstly,the basic principle of the trajectory tracking of cruise missiles and tracking process are introduced.Thinking of the cruise missile as a maneuverable target,the key methods of maneuvering target tracking are talked about,and the target motion models are established as the basis for the follow-up research.Secondly,according to the characteristics of low-flying cruise missiles,the detection performances of different sensors carried by various platforms are analyzed.According to the widely used infrared sensors and radar sensors,mathematical models of infrared detection system and radar detection system are established to analyze the detection ranges and capabilities of different sensors carried by different platforms.Thirdly,the influence of different filter algorithms in the trajectory tracking method is studied.In this paper,two kinds of nonlinear filtering methods,EKF and UKF,are studied.In addition,the same motion scene is designed to simulate and compare the two filtering algorithms.Finally,in order to improve the tracking performance,a method based on the interactive multiple model(IMM)algorithm is studied.To solve the non-linear filtering problem,the IMM-UKF is analyzed.The trajectory tracking accuracy and stability of the IMM algorithm are compared and analyzed by simulation. |
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