延展目标的斑点干涉图像复原技术研究

项目名称： 延展目标的斑点干涉图像复原技术研究

项目编号： No.11203061

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 丁媛媛

作者单位： 中国科学院上海天文台

项目金额： 27万元

中文摘要： 斑点干涉成像技术是克服大气湍流，提高地面大口径望远镜分辨率的有效途径之一。上海天文台1.56米望远镜具有口径大，焦距长，光学质量好等优势，且佘山地区大气视宁度较小，适合开展亮目标的斑点干涉成像观测。经过几年努力，我们研制的斑点干涉相机安装在1.56米望远镜上，成功实现了多对双星的斑点干涉图像复原。在此基础上，结合对低轨空间目标形状和姿态识别的需求，进一步开展延展目标的斑点干涉图像复原算法研究，并在1.56米望远镜上试验观测已知形状的大尺寸空间目标，如哈勃空间望远镜和国际空间站等，验证并改进复原算法。同时，开发基于GPU的并行计算技术的图像复原，以提高运算速度，争取实现准实时图像复原。该课题的研究成果不仅可为佘山1.56米望远镜开辟一个不受较亮夜天光背景影响、又能充分发挥其大口径优势的应用领域，同时还可推广应用到国内其它大口径光学望远镜上。

中文关键词： 图像处理；大气湍流；斑点成像；高分辨率重建；延展目标

英文摘要： Speckle imaging technique is one of the several effective methods, which can overcome atmosphere turbulence effects to improve resolution of the ground-based telescope.The 1.56-m telescope has the advantage of large-diameter,focal length and good optical quality,and the atmospheric seeing at Sheshan is better.So it is suited to carry out speckle interferometry imaging observations for bright object.After several years of efforts, the speckle interferometry camera which is developed by us is installed in the 1.56-m telescope,and the speckle interferometry imaging results for binary star were obtained.On this basis,combined with the needs of the shape and attitude recongnition for space objects,we will carry out the research for speckle imaging of extended object. The experiments will be implemented at 1.56-m telescope, and the observation space objects are large-size and the known shape, such as the Hubble Space Telescope and International Space Station.Based on actual observations,the reconstrution methods will be verified and improved. At the same time,in order to improve the operation speed,we will develop GPU-based parallel computing technology for image reconstruction,the technology may achieve near real-time image reconstruction.The subject of research opend up an application area for 1.56-m telescope at Sh

英文关键词： Image processing；atmosphere turbulence；speckle imaging；high resolution reconstruction；extended object