Performance comparison of differential game and improvement proporfional Navigation guidance Laws

Based on the modern war of the antagonism arrangement between enemy and ourselves,this paper derives a three dimensional guidance law of the differential game for air defence missile to intercept the target of high velocity and maneuver.The guidance law is formulated as analytical solution of the zero order composite feedback form by using the forced singular perturbation technigue.It requires only relative position?state variables and trajectory normal load factor measurements.This differenfial game guidance law abtained is easily for real fime on board implementation.To verify that the guidance law is well beheved.In this paper,another improvement proportional navigation guidance law also is presented,which is compared with the performance of the differential game guidance law.Simulations utilizing certain missile to intercept target as an example are performed.The results demonstrate that the differential game guidance law performance of the trajectory parameters is far superior to improving proportional navigation guidance law.