Micro-vibration analysis and verification of space camera based on integrated model

Abstract

As the requirements of space camera imaging for stability is increasing, on-orbit micro-vibration has become one of the important factors that may affect the imaging of space cameras. The motion forms of space camera caused by micro-vibration were classified, and the mechanisms by which various motions affected the imaging of space camera were analyzed. Considering the effect of optical surface elastic deformation on camera imaging, an integrated model for micro-vibration analysis of space camera was established and the analysis flow was proposed. The integrated analysis model of micro-vibration was applied to the micro-vibration analysis and design improvement of a certain type of space camera, and the analysis results were verified through satellite testing and on-orbit imaging. The verification results show that, the micro-vibration MTF of the space camera is greater than 0.993, and the maximum image motion between the homonymous pixels is less than 1.84 μ m, which meets the requirements of camera imaging.