LAMOST光纤单元位置匹配问题研究
|
摘要
为了使LAMOST(大天区多目标光纤光谱天文望远镜)能够准确运转,需要对焦面板上光纤的位置进行检测和标定。在这一过程中,还需要对由前照法拍摄后所提取的光斑位置与单元实际位置进行匹配。在研究位置匹配的过程中,提出了一种经改进的以背照法[1]中的匹配方法为基础的新型匹配方法——最小值匹配法,有效地解决了原匹配方法在前照法检测过程中光斑数量众多、位置随机、计算量大等问题。实验证明,最小值匹配法的匹配正确率可满足LAMOST的使用需要。
In order to ensure that the Large Sky Area Multi-Object Fiber Spectroscopy Telescope(LAMOST)system can run accurately,it is necessary to measure the position of optical fibers on the focal plate of LAMOST.It is needed to match on the position of light spot extracted by front illuminate with the actual positions of units.During the study of position matching,a new pattern(the minimum matching method)based on the old one and more appropriate to front illuminate method is presented.With the new method,problems found in matching of front illuminate method,such as excessive amounts of light spots,random location,complicated calculations,are solved effectively.
In order to ensure that the Large Sky Area Multi-Object Fiber Spectroscopy Telescope(LAMOST)system can run accurately,it is necessary to measure the position of optical fibers on the focal plate of LAMOST.It is needed to match on the position of light spot extracted by front illuminate with the actual positions of units.During the study of position matching,a new pattern(the minimum matching method)based on the old one and more appropriate to front illuminate method is presented.With the new method,problems found in matching of front illuminate method,such as excessive amounts of light spots,random location,complicated calculations,are solved effectively.
引文
[1]邬林通,刘志刚,胡红专,等.标定方法应用于LAMOST光纤定位单元的饱和测试[J].现代制造工程,2007,(9):100—102.Wu Lingtong,Liu Zhigang,Hu Hongzhuan,et al.The method of calibration apply for the running in measurement of LAMOST fiber positioning unit[J].Modern Manufacturing Engineering,2007,(9):100—102.
[2]刘志刚,江晖,谢志林.LAMOST光纤单元定位参数研究[J].光学技术,2010,36(2):239—243.Liu Zhigang,Jiang Hui,Xie Zhilin.Research on positioning parameters of LAMOST fiber units[J].Optical Technique,2010,36(2):239—243
[3]Eliasson B.Modeling and applications of silent discharge plasmas[J].IEEE Transactions on Plasma Science,1991,(02):309—323.
[4]曾文锋,李树山,王江安.基于仿射变换模型的图像配准中的平移、旋转和缩放[J].红外与激光工程,2001,(2):18—20.Zeng Wenfeng,Li Shushan,Wang Jiangan.Translation,rotation and scaling changes in image registration based affine transformation model[J].Infrared and Laser Engineering,2001,(2):18—20.
[5]单宝忠,王淑岩,刘颂豪,等.Zernik多项式拟合方法及应用[J].光学精密工程,2002,(03):318—323.Shan Baozhong,Wang Shuyan,Liu Songhao,et al.Zernik Polynomial fitting method and its application[J].Optics and Precision Engineering,2002,(03):318—323.
[6]Cheng Xin,Thornberg B,Malik A W,et al.Hardware centric machine vision for high precision center of gravity calculation[J].World Academy of Science,Engineer and Technology,2010,64:573—574.
[7]王文成,徐建强,司书春.一种改进的重心法在光带中心提取中的应用[J].光电子激光,2005,10(10):1239—1242.Wang Wencheng,Xu Jianqiang,Si Suchun.A improved barycenter method used in light trap center acquiring[J].Journal of Optoelectronics Lasers,2005,10(10):1239—1242.
[8]Fernández Soto A,Lanzetta K M,Chen K M,et al.Error analysis of the photometric redshift technique[J].Monthly Notices of the Royal Astronomical Society,2002,(4):889—894.
[2]刘志刚,江晖,谢志林.LAMOST光纤单元定位参数研究[J].光学技术,2010,36(2):239—243.Liu Zhigang,Jiang Hui,Xie Zhilin.Research on positioning parameters of LAMOST fiber units[J].Optical Technique,2010,36(2):239—243
[3]Eliasson B.Modeling and applications of silent discharge plasmas[J].IEEE Transactions on Plasma Science,1991,(02):309—323.
[4]曾文锋,李树山,王江安.基于仿射变换模型的图像配准中的平移、旋转和缩放[J].红外与激光工程,2001,(2):18—20.Zeng Wenfeng,Li Shushan,Wang Jiangan.Translation,rotation and scaling changes in image registration based affine transformation model[J].Infrared and Laser Engineering,2001,(2):18—20.
[5]单宝忠,王淑岩,刘颂豪,等.Zernik多项式拟合方法及应用[J].光学精密工程,2002,(03):318—323.Shan Baozhong,Wang Shuyan,Liu Songhao,et al.Zernik Polynomial fitting method and its application[J].Optics and Precision Engineering,2002,(03):318—323.
[6]Cheng Xin,Thornberg B,Malik A W,et al.Hardware centric machine vision for high precision center of gravity calculation[J].World Academy of Science,Engineer and Technology,2010,64:573—574.
[7]王文成,徐建强,司书春.一种改进的重心法在光带中心提取中的应用[J].光电子激光,2005,10(10):1239—1242.Wang Wencheng,Xu Jianqiang,Si Suchun.A improved barycenter method used in light trap center acquiring[J].Journal of Optoelectronics Lasers,2005,10(10):1239—1242.
[8]Fernández Soto A,Lanzetta K M,Chen K M,et al.Error analysis of the photometric redshift technique[J].Monthly Notices of the Royal Astronomical Society,2002,(4):889—894.