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首页> 外文会议>Conference on Adaptive Optics and Applications II, Oct 15-16, 2002, Shanghai, China >Effects of noise and detection error in a dynamic adaptive optics system
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Effects of noise and detection error in a dynamic adaptive optics system

机译：动态自适应光学系统中噪声和检测误差的影响

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摘要

It is well known that noise and detection error can affect the performances of an adaptive optics (AO) system. Effects of noise and detection error on the phase compensation effectiveness in a dynamic AO system are investigated by means of a pure numerical simulation in this paper. A theoretical model for numerically simulating effects of noise and detection error in a static AO system and a corresponding computer program were presented in a previous article. A numerical simulation of effects of noise and detection error is combined with our previous numeral simulation of a dynamic AO system in this paper and a corresponding computer program has been compiled. Effects of detection error, readout noise and photon noise are included and investigated by a numerical simulation for finding the preferred working conditions and the best performances in a practical dynamic AO system. An approximate model is presented as well. Under many practical conditions such approximate model is a good alternative to the more accurate one. A simple algorithm which can be used for reducing the effect of noise is presented as well. When signal to noise ratio is very low, such method can be used to improve the performances of a dynamic AO system.
机译：众所周知，噪声和检测误差会影响自适应光学（AO）系统的性能。本文通过纯数值模拟的方法研究了噪声和检测误差对动态AO系统中相位补偿效果的影响。在上一篇文章中，提出了一种用于数值模拟静态AO系统中的噪声和检测误差影响的理论模型和相应的计算机程序。本文将噪声和检测误差影响的数值模拟与我们先前对动态AO系统的数值模拟相结合，并已编译了相应的计算机程序。包括了检测误差，读出噪声和光子噪声的影响，并通过数值模拟进行了研究，以发现实际动态AO系统中的最佳工作条件和最佳性能。还提供了一个近似模型。在许多实际条件下，这种近似模型可以替代更精确的模型。还提出了一种可用于降低噪声影响的简单算法。当信噪比非常低时，可以使用这种方法来改善动态AO系统的性能。

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