太阳米粒组织目标特性对望远镜相关跟踪系统的影响
发布时间：2019-01-03 16:47
【摘要】：研究太阳目标特性对太阳望远镜相关跟踪图像稳定系统的影响,采用Hinode太阳光学望远镜的观测数据,对以2min为时间间隔采样的5幅太阳米粒组织图像进行相关计算.针对国家天文台正在研制的空间太阳望远镜(SST)主光学望远镜(MOT)相关跟踪图像稳定系统,分析了太阳米粒组织随时间衍化对相关跟踪系统图像移动计算精度的影响以及米粒组织动态变化对望远镜曝光时间的影响.仿真结果表明,更换参考图像时间不能大于2min,并且在保证算法实时性的情况下,选用参考图像的尺寸与相关跟踪系统定位精度成正比.
[Abstract]:The effects of solar target characteristics on the stability system of the correlation tracking image of the solar telescope were studied. Using the observation data of the Hinode solar optical telescope, the correlation calculation was carried out for five solar rice grained tissue images sampled at 2min time intervals. In view of the space solar telescope (SST) main optical telescope (MOT) correlation tracking image stabilization system which is being developed by the National Astronomical Observatory, The influence of the temporal evolution of the solar grain structure on the accuracy of the image movement calculation of the correlation tracking system and the influence of the dynamic change of the grain structure on the exposure time of the telescope are analyzed. The simulation results show that the change time of reference image can not be longer than 2 mins, and the size of reference image is proportional to the positioning accuracy of the correlation tracking system under the condition of ensuring the real-time performance of the algorithm.
【作者单位】： 中国科学院国家天文台;中国科学院太阳活动重点实验室(国家天文台);中国科学院研究生院;
【基金】：国家自然科学基金资助项目(10778628) 中国科学院知识创新工程资助项目(O531131004)
【分类号】：P111.41
[Abstract]:The effects of solar target characteristics on the stability system of the correlation tracking image of the solar telescope were studied. Using the observation data of the Hinode solar optical telescope, the correlation calculation was carried out for five solar rice grained tissue images sampled at 2min time intervals. In view of the space solar telescope (SST) main optical telescope (MOT) correlation tracking image stabilization system which is being developed by the National Astronomical Observatory, The influence of the temporal evolution of the solar grain structure on the accuracy of the image movement calculation of the correlation tracking system and the influence of the dynamic change of the grain structure on the exposure time of the telescope are analyzed. The simulation results show that the change time of reference image can not be longer than 2 mins, and the size of reference image is proportional to the positioning accuracy of the correlation tracking system under the condition of ensuring the real-time performance of the algorithm.
【作者单位】： 中国科学院国家天文台;中国科学院太阳活动重点实验室(国家天文台);中国科学院研究生院;
【基金】：国家自然科学基金资助项目(10778628) 中国科学院知识创新工程资助项目(O531131004)
【分类号】：P111.41
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