%0 Journal Article
%T Improving Precision of Autocollimation with Cubic Spline Interpolation Functions<br>利用三次样条插值提高自准直仪的准确度
%A WU Wen-ming
%A GAO Li-min
%A WU Yi-ming
%A WU Cui-gang
%A BAI Jian-ming
%A <br>吴文明
%A 高立民
%A 吴易明
%A 吴璀罡
%A 白建明
%J 光子学报
%D 2007
%I 
%X Because of the CCD pixel size,the precision of autocollimation is above arcsec level which is far from high level meterage.Cubic Spline Interpolation Functions was used to subdividing CCD pixel,then beeline edge fitting was used to detecting the edge of image to improve the precision of autocollimation.Unaided measurement was used in the experiment,angles from turning autocollimation and calculating was compared,then the precision of arithmetic was analyzed.The precision of autocollimation was obviously improved by using the arithmetic,0.1 arc second precision was achieved in the result.
%K CCD subdivision
%K Precision of edge location
%K Cubic spline interpolation functions
%K Beeline edge fitting
%K Autocollimation<br>CCD细分
%K 边缘定位准确度
%K 三次样条插值
%K 直线边缘拟合
%K 自准直仪
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=48FA4B6066C206838389A56312B708B1&yid=A732AF04DDA03BB3&vid=933658645952ED9F&iid=5D311CA918CA9A03&sid=E0EA1E85C42D382D&eid=FDE90279419513E0&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=10