基于畸变影响的动态星模拟器星点位置修正方法

Star Position Correction of Dynamic Star Simulator Based on Distortion Effect

介绍了动态星模拟器工作原理及星点位置误差计算方法,提出一种基于星模拟器自身光学系统畸变影响的星点位置修正方法,根据星点位置修正原理,建立修正模型并推导出相应公式.通过对动态星模拟器光学系统进行分析,在畸变曲线基础上利用Matlab拟合得出光学系统视场与星点位置修正量的关系曲线,通过确定星点位置修正临界视场并选取适当修正范围,根据公式对星点位置进行修正以满足星模拟器的设计指标,利用该修正方法能够有效降低对动态星模拟器光学系统畸变设计的要求,为动态星模拟器误差修正提供有效方法.

This paper presents the working principle of dynamic star simulator and the calculation of star position error.According to the working principle,a star position correction method was derived based on distortion of star simulator optical system.The correction model is established and the correction formula is deduced through correction principle.By analyzing the optical system,the fitting curve between field of optical system and correction value of star position can be attained with Matlab.After selecting the revise range by means of ascertaining the critical value of field,and revising the star position on display device using the correction formula,the original requirements were met.The proposed correction can lower the requirements of optical system designing and provide an effective method for star position correction of dynamic star simulator.