Resistance coefficient identification of ballistic with random wind

For the aerodynamic parameters identification of projectile and rocket under the influence of random wind, based on the control system sensitivity theory, the formation of the sensitivity and related mathematical models according to realistic systems are formulated. Sensitivity principle of the control system theory is applied to the identification of resistance coefficient. Analyzing missile system parameters, aerodynamic coefficients are identified using ballistic parameter sensitivity function. Resistance coefficient is identified through shooting observed coordinates data of ballistic. Trajectory data under the influence of random factors are re-calculated according to the identifying results to increase the identification error due to the inaccurate parameters. Through identification, the estimated mathematical model with the more precise ballistic parameters is established so as to enhance the accuracy of the launch of the missiles.