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首页> 外文会议>International symposium on photoelectronic detection and imaging;ISPDI 2011 >Numerical Simulation of Anisoplanatic Imaging of Astronomical Telescope through Atmospheric Turbulence
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Numerical Simulation of Anisoplanatic Imaging of Astronomical Telescope through Atmospheric Turbulence

机译：天文望远镜通过大气湍流各向异性成像的数值模拟

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Anisoplanatism refers to the fact that the turbulence-induced wavefront distortions for propagation paths from the observed object with even slightly different propagation directions can be considerably different. A numerical simulation method of anisoplanatic imaging through volume atmospheric turbulence has been developed in this paper. The propagation of optical rays through volume turbulence is considered as a process of successive scattering of the light wave by a set of phase screens. We give the calculation method of the optimal configuration for multiple phase screens, and t give the flow chart of the whole simulation process of anisoplantic imaging. Then, the anisoplanatic degradation as a function of the separated angle as seen from the receiving aperture of telescope for various numbers of phase screens and different aperture diameters is analyzed. The analyses of the simulation data show that three phase screens is adequate to the representation of the effect of volume turbulence. The simulation method presented here is applicable to a wide range of parameters of telescope imaging system and atmospheric turbulence.
机译：各向异性是指这样一个事实，即湍流引起的波前畸变，对于来自被观察物体的传播路径，即使传播方向稍有不同，也可能有很大不同。本文提出了一种通过体积大气湍流进行非平面成像的数值模拟方法。光线通过体积湍流的传播被认为是通过一组相位筛对光波进行连续散射的过程。我们给出了用于多相筛网的最佳配置的计算方法，并给出了异种植体成像整个模拟过程的流程图。然后，对于各种数量的相位屏和不同的孔径直径，分析了从望远镜的接收孔径看到的，与分离角成函数关系的各向异性平面退化。对模拟数据的分析表明，三相屏幕足以表示体积湍流的影响。本文提出的仿真方法适用于望远镜成像系统和大气湍流的各种参数。

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