Research On Target Assignment And Reentry Guidance Method For Cooperative Operation Of Multi-Flight Vehicles

Cooperative operation of multi-flight vehicles is one of the key points in military research in various countries.Multi-flight vehicles cooperative operation can maximize the effective use of resources,give play to the advantages of flight vehicle group operation,enhance the operational performance of flight vehicle,and help to improve the overall military combat capability.However,there are still some difficulties in target assignment and reentry cooperative guidance for multi-flight vehicles cooperative attacking multi-target.Therefore,this paper mainly carries out the following research work:The target assignment method for cooperative engagement is studied.Firstly,a static target allocation model is established by considering the value of enemy targets and the damage probability of our flight vehicles to the enemy targets,taking the maximum damage to the enemy as the operational target.Then a discrete beetle swarm optimization algorithm is designed to solve the target assignment model.Finally,the algorithm is compared with other algorithms by simulation,and the superiority of the algorithm in solving the target assignment problem are verified.The standard trajectory tracking guidance method of single flight vehicle is studied.Firstly,the reentry corridor is obtained by analyzing the process constraints of the flight vehicle in the reentry process.Then,the trajectory planning of the flight vehicle in the reentry section is carried out.In the reentry corridor,the longitudinal reference trajectory in the balanced glider is planned by using the three-stage H-V section with the constraint of the inclination of the end track.Then,the anti-step tracking guidance law based on sliding mode disturbance observer is designed to track the H-V profile designed before.Finally,the validity and robustness of the guidance law are verified by simulation.The time cooperative reentry guidance method of multi-flight vehicle is studied.Firstly,an improved H-V profile with two adjustable parameters is designed,which can adjust the parameters to achieve the purpose of adjusting the time and range at the same time.Then,a time constrained reentry guidance method based on predictive correction is designed.In the guidance process,the dual constraints of range and time are considered.The prediction correction method is used to adjust the reference trajectory in real time,and then the new reference track is guided and tracked by the tracking guidance law,so that the flight vehicle can reach the specified end point at a given time.In addition,the time coordination strategy of multi-flight vehicle is designed,and the time coordination of multiple vehicle reentry is realized by combining with time constraint guidance law.Finally,the effectiveness and robustness of the time-cooperative reentry guidance method designed in this chapter are verified by simulation.