Modeling Method of high precision projectile oblique incidence passive acoustic positioning model

The invention discloses a modeling method of a high precision projectile oblique incidence passive acoustic positioning model. Based on a projectile shock wave real propagation path, the high precision projectile oblique incidence passive acoustic positioning model based on double-triangle array is established. The method comprises the following steps of firstly, establishing a rectangular coordinate system O-XYZ; laying six microphones on an XOY plane in the O-XYZ coordinate system to form a double-triangle array target surface, then, a projectile carries out oblique incidence and passes through the double-triangle array target surface; according to a real shock wave propagation path, acquiring the mathematical relationship among the pitch angle theta of the projectile oblique incidence,a yaw angle psi, a fall point coordinate P(x, y, 0), and a time difference value for a projectile shock wave to reach to the six different microphones, and acquiring the high precision projectile oblique incidence passive aco