An iterative wavefront sensing algorithm for high-contrast imaging systems | |
Jiang-Pei Dou ; De-Qing Ren ; Yong-Tian Zhu | |
刊名 | Research in Astronomy and Astrophysics
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2011-02 | |
卷号 | 11期号:2页码:198–204 |
关键词 | image processing numerical planetary systems |
英文摘要 |
Wavefront sensing from multiple focal plane images is a promising technique for high-contrast imaging systems. However, the wavefront error of an optics system can be properly reconstructed only when it is very small. This paper presents an iterative optimization algorithm for the direct measurement of large static wavefront errors from only one focal plane image. We first measure the intensity of the pupil image to get the pupil function of the system and acquire the aberrated image on the focal plane with a phase error that will be measured. Then we induce a dynamic phase on the tested pupil function and calculate the associated intensity of the reconstructed image on the focal plane. The algorithm will then try to minimize the intensity difference between the reconstructed image and the aberrated test image in the focal plane, where the induced phase is a variable of the optimization algorithm. The simulation shows that the wavefront of an optical system can theoretically be reconstructed with high precision, which indicates that such an iterative algorithm may be an effective way to perform wavefront sensing for high-contrast imaging systems. |
学科主题 | 系外行星探测 |
WOS记录号 | WOS:000287644700008 |
公开日期 | 2014-01-07 |
内容类型 | 期刊论文 |
源URL | [http://ir.niaot.ac.cn/handle/114a32/620] ![]() |
专题 | 南京天文光学技术研究所_中科院南京天光所知识成果_期刊论文 南京天文光学技术研究所_天文光谱和高分辨成像技术研究室_期刊论文 |
推荐引用方式 GB/T 7714 | Jiang-Pei Dou,De-Qing Ren,Yong-Tian Zhu. An iterative wavefront sensing algorithm for high-contrast imaging systems[J]. Research in Astronomy and Astrophysics,2011,11(2):198–204. |
APA | Jiang-Pei Dou,De-Qing Ren,&Yong-Tian Zhu.(2011).An iterative wavefront sensing algorithm for high-contrast imaging systems.Research in Astronomy and Astrophysics,11(2),198–204. |
MLA | Jiang-Pei Dou,et al."An iterative wavefront sensing algorithm for high-contrast imaging systems".Research in Astronomy and Astrophysics 11.2(2011):198–204. |
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