自适应指向误差的快速星图识别方法

Fast Star Pattern Recognition Method Based on Adaptive Pointing Offset

新疆25cm望远镜是一台小口径巡天望远镜,用于支撑地球同步轨道(GEO)监测任务.空间物体监测需要依靠快速的光学图像处理技术,采用天文定位方法得到空间物体的赤经-赤纬测量信息.新疆25cm望远镜具有指向误差较大的问题,严重影响光学图像处理的成功率.本研究分析指向误差对天文定位中星图识别的影响,提出一种改进的以指向搜索为框架的快速星图识别方法,该方法能够自动适应指向误差带来的不利影响.利用新疆南山站25cm望远镜的图像对该方法进行测试,达到预期效果,验证其有效性和稳定性.

Xinjiang-25 cm telescope is a small aperture sky survey telescope used to support geostationary earth orbit(GEO)target monitoring tasks.Space object monitoring must rely on fast optical image processing technology and astronomical positioning method to obtain the right ascension and declination measurement information of space objects.The Xinjiang-25 cm telescope has a large pointing error,which significantly affects the success rate of optical image processing.In this study,we analyze the impact of pointing error on star map recognition in astronomical positioning and propose an improved fast star map recognition method based on pointing search that can automatically adapt to the adverse impact of pointing error.This method was tested using the image of the 25-cm telescope at Nanshan station,Xinjiang,and the expected effect was achieved,proving its effectiveness and stability.