Accurate and fast simulation of Kolmogorov phase screen by combining spectral method with Zernike polynomials method  

作　　者：张宝东 秦石乔 王省书 

机构地区：[1]College of Photoelectric Science and Engineering, National University of Defense Technology

出　　处：《Chinese Optics Letters》2010年第10期969-971,共3页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No. 60677041

摘　　要：A new method is proposed to simulate the Kolmogorov phase screen. A hybrid phase screen is achieved by linearly combining two phase screens simulated by both spectral and Zernike polynomials methods. Unlike the imperfection of phase structure function existing at some spatial frequencies in each of the two methods, the mean structure function of the hybrid phase screens coincides remarkably well with theory in the whole spatial frequency domain. Apart from advantage on accuracy, the proposed method also saves considerable computational time. For a phase screen with certain accuracy, the new method is ten times and seven times faster compared with the spectral method and Zernike polynomials method, respectively.A new method is proposed to simulate the Kolmogorov phase screen. A hybrid phase screen is achieved by linearly combining two phase screens simulated by both spectral and Zernike polynomials methods. Unlike the imperfection of phase structure function existing at some spatial frequencies in each of the two methods, the mean structure function of the hybrid phase screens coincides remarkably well with theory in the whole spatial frequency domain. Apart from advantage on accuracy, the proposed method also saves considerable computational time. For a phase screen with certain accuracy, the new method is ten times and seven times faster compared with the spectral method and Zernike polynomials method, respectively.

关 键 词：Computational complexity POLYNOMIALS Spectroscopy 

分 类 号：O411[理学—理论物理]