真空下星敏感器地面校准设备观察窗形变及光路分析

Analysis of the Distortion and Light Path of Viewport Windows Used for Ground Regulator of Star Senor in Vacuum Environment

观察窗设计是星敏感器地面校准设备高低温真空罐设计中的一项关键技术。观察窗设计的好坏将直接影响地面校准设备的校准精度。由于观察窗受到内外压差时会发生挤压变形,光线通过变形窗时发生偏移,同时观察窗内外介质密度的不同也会引起光线的偏差,最终星敏感器所接受的光线不是原本的入射光线,导致光线校准出现偏差。针对上述问题本文通过应用ANSYS和MATLAB给出一种有效的计算方法,该方法既可以计算出观察窗的形变量,同时在形变的基础上计算出光线传输的改变量,为后续的地面校准提供补偿参数。

The design of viewport windows It has an effect on adjusted precision of ground is a key link of designing ground regulator of star senor regulator of star senor. The viewport window is distorted when it is extruded. The distortion and medium can warp light path, so the star senor that cannot receive the original light will have bad adjusted precision. The dissertation is about a way to solve the problem u- sing the ANSYS and MATLAB. The method can simulate the distortion of viewport and calculate the actu- al light path, so the method can provide the parameters for compensation of ground regulator of star se- nor.