Aerodynamic Parameter Identification for High-Spin Projectile Based on Differential Evolution-Maximum Likelihood Method

In this paper, a Differential Evolution-Maximum Likelihood Algorithm (DEML) is proposed for the drag coefficient identification in high-spin projectile with insensitively initial value selection. The differential evolution method is utilized to replace newton iterative gradient optimization in maximum likelihood estimation theory to improve the accuracy of coefficient identification. And experiment atmosphere data is used to produce the simulation flight data with external disturbances. Based on the flight data, identification simulation results show the effective performance and low-sensitive initial value selection with the DEML method.