天文图像空域重建新方法:迭代位移叠加法

A New Method for Astronomical Image Reconstruction in Spatial Region: Iterative Shift-and-Add Technique

在天文斑点成像中 ,基于斑点图中一个新的位移基准点———目标的自相关极大值点 ,提出了一种在空间域中重建天文图像的迭代位移叠加法 (ISA法 ) ,它能有效地消除大气湍流影响 ,实现望远镜衍射受限分辨率天文成像。在阐述了该方法的基本原理之后 。

In astronomical speckle imaging, based on a new datum point for shifting that is the maximum value point of the autocorrlation of the object, a new astronomical image reconstruction method working in spatial region——iterative shift and add technique (ISA) is advanced. It can be applied to remove atmospheric turbulence influence effectively and thus the astronomical imaging with the diffraction limited resoulition of the telescope will be achieved. After describing the principle of the method, the image reconstruction experiments of some astronomical obejcts are given.