Approximation of large radio telescope surface with measurement data of optic-electronic stereoscopic system

摘要：

　　The new large radio telescope RT-70 (Uzbekistan,Suffa) requires controlling the linear deformations of its primary mirror.Following issues dealing with this problem are described in this article: 1) the possibility to design measurement system based on stereoscopic scheme for the control of primary mirror’s linear deformations,2) using the approximation of a parabolic surface by the method of least squares for measurement the coordinates of control elements placed on the primary mirror.It is shown the possibility of assessing the distance to the control points using parameters in equation of a parabolic surface.Information about spatial position of special stereoscopic control points is used to calculate the position of all ordinary control points on primary mirror of radio telescope.The results of numerical experiments show that approximation error of paraboloid parameters proportionally depends on the RMS error of image coordinates on matrices of basic blocks that form the measurement system.

关键词： radio telescope linear deformation stereoscopic scheme approximation measuring error

作者: Konstantin G. Arakantsev Igor A. Konyakhin

作者单位: University of Information Technologies, Mechanics and Optics, Department of Optic-electronic systems and devices, Saint-Petersburg, Russia

会议类型: 国际会议

会议名称: 2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)

会议地点: 成都

会议语种:英文

页码: 1-6

在线出版日期: 2012-08-08（万方平台首次上网日期，不代表论文的发表时间）