The Design And Realization Of The Key Technology Of Single Target Motion Simulation System

The single-target moving trajectory simulation system designed in this thesis belongs to a subsystem of the moving target hit simulation system,which is used to generate aerial moving targets and simulate their moving trajectories.The single-target motion simulation system generates a simulation target in the form of laser beam projection,receives motion commands from the integrated measurement and control system,and performs real-time motion control on a high-precision two-dimensional servo turntable equipped with a mirror to change the projection direction of the beam to control the simulation target The movement on the dome screen simulates the movement trajectory closest to the actual target.There are three key problems to be solved in a single-target motion trajectory simulation system.The first is the problem of clock synchronization of the various subsystems in the integrated system,the second is the problem of smoothing the motion trajectory,and the third is the need to consider when collecting aerial target information in the real scene.Mistakes,misses or transmission errors.Aiming at these three key problems,this thesis proposes relative solutions.A high-precision clock module is designed to realize the function of checking the table with the integrated measurement and control system when the system starts,and to implement the high-precision timing function during subsequent normal work.When no control data is received,the position data predicted by the trajectory prediction algorithm is enabled.A trajectory fitting algorithm is used to interpolate the distance between the two positions,avoiding the phenomenon that the trajectory polyline is not smooth because the distance is too large.GA-Elman algorithm was used to predict the position,and errors caused by mis-picking,missing-picking or mis-transmission were corrected.The main tasks completed in this article are as follows:1.The overall design of the single-target motion simulation system and the working principles of the main controlled equipment in the system are introduced.According to the requirements of the real-time performance of the control system,the hard real-time functions of the RTX real-time extension subsystem are briefly introduced.Designed and developed modular control software under the platform environment.2.The design of the data communication network structure of the single-target simulation system is completed.A communication network including CAN bus,Ethernet and RS485 has been established,and the corresponding communication protocols and data formats have been formulated.3.Use cubic spline interpolation algorithm to perform interpolation fitting on the motion trajectory data of the simulation target,so that the simulated trajectory data is closer to the real trajectory4.The genetic algorithm is used to improve the Elman neural network,and the improved neural network is used to predict the trajectory of the simulated target,which increases the stability of the simulation system,and solves the problem of missing information in the actual system.Mistakes and misinformation.5.According to the functional indicators of the single-target motion simulation system,the system functions were debugged and tested in the field environment,and the design scheme was optimized several times.The experimental results show that the simulation target trajectory of the single-target motion simulation system is smooth and accurate.