Method and system for simulating aero-optical effect

Abstract

The invention relates to a method for simulating an aero-optical effect. The method comprises the steps of conducting thermal and structural analysis to an optical window by adopting a finite element analysis method to obtain a finite element analysis result, and calculating multi-frame wave-front errors according to the finite element analysis result; fitting the current frame wave-front error to be a Zernike polynomial coefficient vector q; calculating control voltage vectors of all actuators of a deformable mirror and control voltage vectors of all actuators of a tilting mirror according to the q; and adjusting the actuators of the deformable mirror according to the control voltage of the deformable mirror, adjusting the actuators of the tiling mirror according to the control voltage of the tiling mirror, acquiring and saving distorted images on an imaging detector and again fitting the q according to the current frame wave-front error. The invention additionally discloses a system for simulating the aero-optical effect. By using the method and the system provided by the embodiment of the invention, dynamic distorted image data under the influence of the aero-optical effect can be obtained and experimental conditions are provided for researches on the correction of the aero-optical effect.

Description

technical field [0001] The present application relates to the field of optical technology, and more specifically, to a method and system for simulating aero-optical effects. Background technique [0002] When an aircraft with an optical imaging detection and guidance system flies in the atmosphere at high speed, a complex flow field is formed between the optical window and the incoming flow, causing thermal radiation and image transmission interference to the optical imaging detection system, causing the target image to shift and shake and blurring, this effect is called aero-optical effect. [0003] The aero-optical effect has a negative impact on the guidance system, reduces the ability of the seeker to detect, track and identify the target, and affects the accuracy of the terminal guidance. When studying how to overcome the influence of aero-optic effects on the imaging detection of guidance systems, it is first necessary to obtain distorted image data by simulating the ...

AI Technical Summary

Problems solved by technology

Since the computer simulation does not include the actual optical system and imaging detector, the distorted image data of the actual imaging detector cannot be obtained, which is not conducive to the subsequent research on the restoration of distorted images

Moreover, the frequency of wavefront errors caused by aero-optical effects changes rapidly, and it is difficult for computer simulation to obtain continuous distorted images under the influence of dynamic wavefront errors

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