Space Camera Image Degradation Induced by Satellite Micro-vibration

In order to evaluate the space camera image degradation induced by micro-vibration,an integrated modeling was utilized.During the CCD integrated time,the image motion of dynamical imaging system equaled to static image spot blurring,dynamical imaging evaluation criterion was proposed and dynamical imaging was analyzed.All kinds of disturbance sources were introduced,the finite element model(FEM)of space camera was founded,and the jitter values of optical elements were acquired by dynamic analysis with finite element software.The analysis results were imported to optical design software CODE V,the system spot diagram and MTF were attained,and the image motion was calculated quickly.The integrated modeling which shortens the computational quantity effectively suits to any type of micro-vibration.This method was utilized to simulate the space camera image degradation induced by micro-vibration,and the dynamical imaging evaluation criterion was used to estimate the effects on imaging system.The relationship between micro-vibration and image degradation was achieved,that provides important references for system optimum design and vibration isolation.