Research On Anti-ship Weapon Terminal Trajectory Measurement Algorithm Based On Millimeter Wave Radar

With the rapid development of anti-ship weapon,the terminal trajectory measurement of anti-ship weapon has become an important research direction.The remote measurement method with measuring equipment not on the offshore experimental platform can realize the trajectory tracking of anti-ship weapons and is not affected by the explosion process,but cannot accurately measure the motion state of anti-ship weapons when approaching the offshore experimental platform.The short-range measurement method with measuring equipment installed on the experimental platform can accurately measure the terminal ballistic,but the price is relatively high.In the process of explosion often faced with the test equipment can not be recovered,resulting in greater economic losses.The single chip continuous wave system of 77 GHz millimeter wave radar has the characteristics of high range resolution and low cost,which is a very effective method for measuring the terminal ballistic of anti-ship weapons.In this context,this paper focuses on the problems such as sea clutter interference and large point cloud clustering error when measuring the terminal trajectory of anti-ship weapon,and proposes the corresponding signal processing algorithm.The main research of this paper includes: first,the basic working principle of millimeter-wave radar and the generation of point cloud data are analyzed,and the paper introduces the situation and general diagram of the millimeter wave radar array used in this paper.Based on the actual measurement environment of the experimental platform in the experiment,the simulation results of the constant virtual police algorithm are presented,and the adaptive constant virtual police detection strategy is proposed,and the probability of target signal detection is improved in the background of the sea clutter.In order to avoid the influence of the anti-ship weapon doppler shift diagonal degree FFT,the method of selecting the music algorithm is measured,and the error of the Angle measurement is reduced.In order to solve the problem of the problem of solving the error of the artificial setting parameter in the heterogeneous uniform,the KANN-DBSCAN algorithm based on the point cloud density characteristics is used to adapt the clustering class,and expand the algorithm to the three-dimensional ball point cloud clustering,and realize the classification of the target in 3d space,and improve the purity of the cloud.In order to measure the Angle of the anti-ship weapon and the experimental platform,the correlation of the same target point cloud and the target trajectory are estimated by using the JPDA-UKF algorithm,which is calculated using the least squares method to make the final 20 frame point cloud data in the direction of the target motion,and use the projection method to calculate the Angle of the target and the offshore experiment platform.Since this paper focuses on the signal processing algorithm of millimeter wave radar,the millimeter wave radar module with smaller power is selected to perform the equivalent detection of the aircraft and other targets,and the accuracy and rationality of the algorithms used in each chapter of this paper are verified.