天文像复原迭代位移叠加法中的噪声偏差补偿  

Noise Bias Compensation in the Iterative Shift-and-Add Method for Astronomical Image Reconstruction

作　　者：邱耀辉[1,2] 刘忠[1,2] 卢汝为[1,2] 楼柯 

机构地区：[1]中国科学院云南天文台,昆明650011 [2]中国科学院国家天文观测中心光学天文联合开放实验室,昆明650011

出　　处：《光学学报》2002年第7期829-833,共5页Acta Optica Sinica

基　　金：国家自然科学基金 (1987390 17);中国科学院天文口基金资助课题

摘　　要：当工作于实际数据时 ,由于存在着多种噪声 ,导致了天文像复原迭代位移叠加法中的噪声偏差项。为消除这些噪声偏差项的影响 ,分别讨论了在观测目标和参考星的斑点数据期间由大气视宁度差导引入的系统误差和探测器严重的附加噪声产生的偏差 。Because there are many kinds of noise, the noise bias terms are introduced in the iterative shift-and-add method for astronomical image reconstruction when working in real data. To overcome the influence of the noise bias terms, the system error involved by the differences of the atmospheric seeing during the observation of the speckle data of the object and reference star; and the bias come from serious additive noise of the detector were discussed. The methods for the compensation of these noise bias terms were given.

关 键 词：天文像复原 迭代位移叠加法 噪声偏差 补偿方法 

分 类 号：P123[天文地球—天体测量]