Analytical method of optical transmission in aero circumstance window

Under the aerodynamic circumstance when the incoming wave meets the distorted infrared window of the guide missle, the aplanatic emergent wave after the window will deviate from the real wave front because of the change of the window surface and the gradient index of the optical window. Thus the object ray transmiting through the window will distorts and generates bore-sight error. To increase the accuracy of guidance, the ray-tracing program cross the distorted and non-uniform index window is programmed. At the same time, the distorted wave front chart and the optical evaluation function are obtained. Comparing with the experimental result, the feasibility and credibility of the emulation method are verified.