Componentized Design And Implementation Of Projectile-target Rendezvous Model Based On XSIM

The problem of rendezvous of projectile and target is the fundamental problem of whether the projectile can hit the target.The off-target amount is the minimum vector distance between the target track and the projectile trajectory.It is a direct measure of evaluating the accuracy of projectile hits and determining the rendezvous of projectile and target.As an important component of the fire control simulation system,projectile-target rendezvous model provides an important basis for the effectiveness evaluation of fire strike.This article takes small-caliber antiaircraft artillery as the research object,and studies the solution problems through different trajectory models,selects the trajectory model with the best matching accuracy and time,establishes a rendezvous model of projectile and target,and calculates the off-target amount and implements the component design of the projectile-target rendezvous model.The main research work is as follows.Aiming at the problem of inaccurate calculation of the off-target amount caused by the contradiction between the accuracy and the solution time of rendezvous of the projectile and target,in this paper,the data from the off-scatter table is used as the true value,and the differences in solution accuracy and speed between different ballistic models are compared through simulation.The simulation results show that the simplified six-degree-of-freedom ballistic model and table fitting function meet the requirements of the index in the accuracy and speed of the solution,and provide a basis for the selection of the ballistic model.In view of the simple N-order bivariate polynomial fitting all trajectory trajectories cannot meet the requirements of accuracy index and fitting order control at the same time,this paper proposes to use segmented N-order polynomial to fit the radiograph data.The simulation results show that this method can effectively reduce the fitting error and the distance deviation between the projectile position and the actual hit point.At the same time,it can shorten the solution time,which is more conducive to the ballistic solution of the real-time fire control simulation system.Aiming at the problem that it is difficult to calculate the ideal off-target amount in real time,an equivalent off-target amount calculation method which is realizable is proposed.Simulation results show that the error between the off-target amount and the ideal off-target amount is within the allowable range.The component design and implementation of rendezvous model of proj.ectile and target based on the XSIM platform was completed,including the physical design of the projectile,the design of the mobile component,the design of the sensor component,and the design of the data processing component,it is proved that the model meets the actual needs through examples.