| 天文成像数值仿真的相位屏模拟方法 |
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| 引用本文： | 常翔,李荣旺,熊耀恒. 天文成像数值仿真的相位屏模拟方法[J]. 云南天文台台刊, 2012, 0(1): 46-55 |
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| 作者姓名： | 常翔 李荣旺 熊耀恒 |
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| 作者单位： | 中国科学院国家天文台／云南天文台,云南昆明650011 |
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| 基金项目： | 国家自然科学基金（10778705）资助. |
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| 摘 要： | 通过利用Monte—Carlo方法对湍流相位屏模拟进行验证和分析。给出加入次谐低频补偿相位屏与直接谱反演相位屏的对比结果，并分析了在考虑内外尺度时次谐低频补偿方法的有效性。此外，给出了基于天文观测的多相位屏的湍流分层模型。在此基础上对天文成像进行数值仿真，并给出了仿真结果。
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| 关 键 词： | 天文成像 数值仿真 大气光学 相位屏模拟 |
Numerical Simulations. of Astronomical Imaging with the Phase-Screen Method |
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| Chang Xiang,Li Rongwang,Xiong Yaoheng. Numerical Simulations. of Astronomical Imaging with the Phase-Screen Method[J]. Astronomical Research & Technology, 2012, 0(1): 46-55 |
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| Authors: | Chang Xiang Li Rongwang Xiong Yaoheng |
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| Affiliation: | ( National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences Kunming 650011, China ) |
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| Abstract: | In this paper we present a study of simulating turbulence-influenced phase screens. Effects of inner and outer scales of turbulences on phase screens in simulating with different Monte-Carlo methods are analyzed. Our result shows the effectiveness of the SH-FFT method under certain specific astronomical observational conditions. By using multiple-layer model of atmospheric turbulences （ corresponding to multiple phase screens） , we introduce a new method for simulating astronomical images of short and long exposures. Using the new method, we simulated images of a point source with and without the correction by an AO system. |
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| Keywords: | Astronomical imaging Numerical simulation Atmospheric optics Phase screen |
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