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An iterative wavefront sensing algorithm for high-contrast imaging systems
Jiang-Pei Dou; De-Qing Ren; Yong-Tian Zhu
2011-02
Source PublicationResearch in Astronomy and Astrophysics
Volume11Issue:2Pages:198–204
Abstract
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.
KeywordImage Processing Numerical Planetary Systems
Subject Area系外行星探测
WOS IDWOS:000287644700008
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/620
Collection中国科学院南京天文光学技术研究所_期刊论文
天文光谱和高分辨成像技术研究室_期刊论文
Recommended Citation
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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