Development of the super high angular resolution principle for X-ray imaging  

作　　者：Chen Zhang Shuang-Nan Zhang 

机构地区：[1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [2]Department of Physics ＆ Center for Astrophysics, Tsinghua University, Beijing 100084, China [3]Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy ofSciences, Beijing 100049, China

出　　处：《Research in Astronomy and Astrophysics》2011年第1期119-124,共6页天文和天体物理学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China;support by the Space Science Preliminary Study Program of the Chinese Academy of Sciences and by the China Postdoctoral Science Foundation (No. 20080440395);SNZ acknowledges the partial funding support by the Ministry of Education of China;Directional Research Project of the Chinese Academy of Sciences under project No. KJCX2-YW-T03;the National Natural Science Foundation of China (Grant Nos. 10521001, 10733010, 10725313 and 10327301)

摘　　要：Development of the Super High Angular Resolution Principle （SHARP） for coded-mask X-ray imaging is presented. We prove that SHARP can be considered as a generalized coded mask imaging method with a coding pattern comprised of diffraction-interference fringes in the mask pattern. The angular resolution of SHARP can be improved by detecting the fringes more precisely than the mask＇s element size, i.e. by using a detector with a pixel size smaller than the mask＇s element size. The proposed mission SHARP-X for solar X-ray observations is also briefly discussed.Development of the Super High Angular Resolution Principle （SHARP） for coded-mask X-ray imaging is presented. We prove that SHARP can be considered as a generalized coded mask imaging method with a coding pattern comprised of diffraction-interference fringes in the mask pattern. The angular resolution of SHARP can be improved by detecting the fringes more precisely than the mask＇s element size, i.e. by using a detector with a pixel size smaller than the mask＇s element size. The proposed mission SHARP-X for solar X-ray observations is also briefly discussed.

关 键 词：instrumentation： high angularresolution-- techniques： image processing-- telescopes 

分 类 号：TN958.98[电子电信—信号与信息处理] TP391.41[电子电信—信息与通信工程]