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。
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.
出处
《天文研究与技术》
CSCD
2012年第1期46-55,共10页
Astronomical Research & Technology
基金
国家自然科学基金(10778705)资助
关键词
天文成像
数值仿真
大气光学
相位屏模拟
Astronomical imaging
Numerical simulation
Atmospheric optics
Phase screen
