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天文成像数值仿真的相位屏模拟方法
Numerical Simulations of Astronomical Imaging with the Phase-Screen Method
查看参考文献15篇
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文摘
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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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其他语种文摘
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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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来源
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天文研究与技术
,2012,9(1):46-55 【扩展库】
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关键词
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天文成像
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数值仿真
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大气光学
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相位屏模拟
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地址
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中国科学院国家天文台/云南天文台, 云南, 昆明, 650011
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-7673 |
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学科
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大气科学(气象学) |
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基金
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国家自然科学基金资助
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文献收藏号
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CSCD:4442157
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参考文献 共
15
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