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研究了载体角运动及振动对星敏感器成像的影响,推导并建立了不同飞行状态下星图模糊的数学模型.在此基础上讨论了多重运动模糊机理,提出采用分步复原方案去除多重星图模糊,以保证高动态环境下星敏感器工作的精确性及稳定性.仿真结果表明,载体运动造成的星体质心提取误差与具体运动形式及参数有关,并通过比较复原前后星敏感器的定姿效果,验证了模糊星图分步复原方法的有效性.
The influence of carrier angular motion and vibration on star sensor imaging is studied, and the mathematical model of star-map fuzzy in different flight states is derived and established. Based on this, the multi-motion fuzzy mechanism is discussed and the step-by-step restoration scheme is proposed to remove multiple stars The fuzzy map is used to ensure the accuracy and stability of star sensor in high dynamic environment.The simulation results show that the centroid extraction error caused by carrier motion is related to the specific motion form and parameters and by comparing the performance of star sensor The effectiveness of the step-by-step restoration method of the fuzzy star graph is verified.