通过柯尔莫哥洛夫湍流成像天文物体的计算机模拟

A. T. Mohammed
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引用次数: 0

摘要

利用地基光学望远镜对柯尔莫哥洛夫湍流存在和不存在的情况下的参考星和双星进行了二维数学建模和模拟。这包括对参考星的调制传递函数(MTF)、双星的傅立叶星等(FM)和自相关函数(AUT)的定量评估。在此基础上,引入了一个二阶多项式方程来描述参考星的平均MTF和双星在不同口径下的平均调频。结果还表明,在大气湍流强度和望远镜直径的影响下,AUT的次峰高度保持不变,而次峰宽度变化明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Computer simulations of imaging astronomical objects through Kolmogorov turbulence
Two-dimensional mathematical modeling and simulations are carried out to observe a reference and a binary star in the absence and presence of a Kolmogorov turbulence via ground-based optical telescopes. This involve the quantitative assessment of the modulation transfer function (MTF) of a reference star, the Fourier magnitude (FM) and the autocorrelation function (AUT) of a binary star. As a result of this assessment a second degree polynomial equation is introduced to describe the average MTF of a reference star and the average FM of an image of a binary star that observed by different telescope diameters. The results also indicate that the height of the secondary peaks of the AUT remain constant despite of the strength of atmospheric turbulence and the diameter of the telescope while the width of these peaks change significantly.
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