Atmospheric Phase Screen Simulation Using Zernike Polynomial

Abstract:

An algorithm is described which simulates atmospheric phase screen (PS) distorted by von Karman atmospheric turbulence by using Zernike expansion of randomly weighted Karhunen-Loeve function. The statistics of the PS generated by using power spectrum method which is most commonly used for generating PS poorly match up with the theoretical structure function, especially at low spatial frequency, while the algorithm described in the this paper can compensate for this shortcoming. And the accuracy of the PS is verified by comparing with the theoretical results. Furthermore, comparing with the existed methods which also use the Zernike expansion to simulate PS, algorithm presented in this paper is more accurate because the effects of the finite outer scale L0.is included

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 1002-1006
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.1002
• Online since: June 2012
• Authors: Wei Yan, Zhi Hua Chen, Tai Jiao Du, Jian Guo Wang
• Keywords: Atmospheric Phase Screen, Finite Outer Scale, Numerical Simulation, Zernike Polynomials

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