Research On Guidance And Simulation Of Near Spacecraft Interception

With the rapid development of navigation,guidance and control technology,near spacecraft is becoming a hot research,which shows the quick maneuvering and real time attacking.In the future,we must deal with the hypersonic weapon aiming at near spacecraft.This paper makes a research on the guidance and simulation of intercepting near spacecraft,including the following three parts:In the first part,a compound guidance law is given,which consists of three stages as follows: the high throwing program initial guidance law,the optimal predictive middle guidance law,and the differential game terminal guidance law.And the handover condition of each guidance law is given.Taking into account the typical maneuvering mode of the near spacecraft,the flight simulation is studied.Compared with compound guidance law and the proportional guidance law,and the effects of the handover on the interception are analyzed.In the second part,the interceptable area and the fast calculation method are given.Considering the influence of the interceptable area,the intercepting missile is optimized.This paper puts forward a multi-interceptor technology intercepting multiple targets and a cross formation flying.The simulation results are analyzed,which includes the interceptable area,the interception of multiple targets,and the interception with formation flying.Simulation results show that the multi-interceptor technique is feasible for the interception of near spacecraft.In the third part,the mathematical model of multi-target task assignment is established.Particle swarm optimization(PSO)algorithm is used to allocate dynamic tasks.A multi-layer intercept program is designed to intercept multiple near spacecraft.Numerical simulation of target assignment and multi-layer interception demonstrate that PSO and multi-layer interception can achieve accurate interception for multi-target.