自适应光学系统测试中大气湍流的时域模拟

卫沛锋; 刘欣悦; 林旭东; 张振铎; 董磊

doi:doi:10.3788/co.20130603.0371

中国光学, 2013, 6 (3): 371, 网络出版: 2013-07-01

自适应光学系统测试中大气湍流的时域模拟

Temporal simulation of atmospheric turbulence during adaptive optics system testing

论文大纲

卫沛锋 ^*刘欣悦林旭东张振铎董磊

作者单位

中国科学院长春光学精密机械与物理研究所，吉林长春 130033

自适应光学大气湍流液晶空间光调制器 Zernike多项式 adaptive optics atmospheric turbulence liquid crystal spatial light modulator Zernike polynomial

摘要

建立了大气湍流模拟的时域模型，用于在自适应光学系统的测试中模拟大气湍流的时域变化。讨论了时域模型下随机相位屏平滑帧数和刷新频率与平均风速的关系。结果表明: 对表征随机波前的随机相位屏进行时域平滑可使随机波前的变化更符合大气湍流对入射波前连续平滑渐变的影响; 随机相位屏的平滑帧数仅与系统口径和大气相干长度相关，而与风速无关; 随机相位屏的刷新频率与平均风速成正比，平滑后的刷新频率还与平滑帧数成正比。最后，构造了一套大气湍流模拟装置，应用功率谱分析法对时域模型的有效性进行了验证。

Abstract

A temporal model was proposed for simulating the atmospheric turbulence varying with the time in the adaptive optics system testing. The relationship between the number of interpolated frames for the random phase screen, refurbish frequency and the mean wind speed was analyzed. The analysis result demonstrates that it is necessary to smooth the random phase screen for characterizing the temporal gradual variation of the random wavefront in order to make the change of the random wavefront better aligned with the influence of atmospheric turbulence on continuous smoothing gradients of incident wavefront. The interpolated frames of the random phase screen is only related to the aperture diameter and the atmospheric coherence length, but not related to the wind speed, and the refurbish frequency of the random phase screen increases with the mean wind speed, and the refurbish frequency smoothed increases with the number of interpolated frames. A atmospheric turbulence simulator was constructed in laboratory and the analysis of the power spectrum density of experimental result demonstrates that temporal model of the atmospheric turbulence simulation is valid.

参考文献

[1] 曹召良，李小平，宣丽,等.液晶自适应光学的研究进展[J].中国光学,2012,5(1):12-19.

CAO ZH L,LI X P,XUAN L,et al.. Recent progress in liquid crystal adaptive optical techniques[J]. Chinese Optics,2012,5(1):12-19.(inChinese)

[2] 刘超，胡立发，穆全全,等.校正水平湍流波面的自适应光学系统的带宽需求[J].光学精密工程，2010,18(10):2137-2142.

LIU CG,HU L F,MU Q Q,et al.. Bandwidth requirements of adaptive optical system for horizontal turbulence correction[J]. Opt. Precision Eng.,2010,18(10):2137-2142.(in Chinese)

[3] 王俊波，盛明，谢秀秀，等.强湍流下并行中继自由空间光通信的中断分析[J].光学精密工程，2012,20(4):745-751.

WANG J B,SHENG M,XIE X X,et al.. Outage analysis for parallel relay free-space optical communication in strong turbulence[J]. Opt. Precision Eng.,2012,20(4):745-751.(in Chinese)

[4] 胡朝晖，姜文汉.受大气湍流影响的光学波前模拟[J].光电工程，1995,22(2): 50-56.

HU ZH H,JIANG W H. Simulation of the optical wavefront distorted by atmospheric turbulence[J]. Opto-Electronic Eng.，1995,22(2): 50-56.(in Chinese).

[5] 刘永军，胡立发，曹召良.液晶大气湍流模拟器[J].光子学报,2006,35(12): 1960-1963.

LIU Y J,HU L F,CAO ZH L. Liquid crystal atmosphere turbulence simulator[J]. Acta Photonica Sinica,2006,35(12): 1960-1963.(in Chinese)

[6] 王立瑾，李强，魏宏刚，等.大气湍流随机相位屏的数值模拟和验证[J].光电工程，2007,34(3):1-4.

WANG L J，LI Q，WEI H G,et al.. Numerical simulation and validation of phase screen distorted by atmospheric turbulence[J]. Opto-Electronic Eng.，2007,34(3):1-4.(in Chinese).

[7] HERMAN B J,STRUGALA L A. Method for inclusion of low-frequency contribution in numerical representation of atmospheric turbulence[J]. SPIE,1990,1221:183-192.

[8] JOHANSSON E M,GAVEL D T. Simulation of stellar speckle imaging[J]. SPIE,1994,2200:372-383.

[9] HU L F,XUAN L,CAO ZH L. A liquid crystal atmospheric turbulence simulator[J]. Optics Express,2006,14(25):11911-11918.

[10] 姜宝光，穆全全，曹召良，等.液晶波前校正器校正水平方向上的大气湍流[J].液晶与显示,2009,24(3):396-398.

JIANG B G，MU Q Q，CAO ZH L,et al.. Correction of turbulence in horizontal direction using a liquid crystal wave-front corrector[J]. Chinese J. Liquid Cyrstals and Displays,2009,24(3):396-398.(in Chinese)

[11] 李大禹，胡方发，穆全全,等.GPU计算液晶自适应光学波前重构的并行性研究[J].液晶与显示,2007,22(5):572-575.

LI D Y,HU L F,MU Q Q,et al.. Wavefront reconstruction parallel computing of liquid crystal adaptive optics based on GPU[J]. Chinese J. Liquid Cyrstals and Displays,2007,22(5):572-575.(in Chinese).

[12] NOLL R J. Zernike polynomials and atmospheric turbulence[J]. J. Opt. Soc. Am.,1976,66(3):207-211.

[13] RODDIER N. Atmospheric wavefront simulation using Zernike polynomials[J]. Opt. Eng.,1995,29(10):1174-1180.

[14] WILCOX C C,MARTINEZ T Y,SANTIAGO F. Adaptive optical system atmospheric turbulence generator testbed[C]//Advanced Maui Optical and Space Surveillance Technologies Conference,Sept. 12-15,2007,Maui,Hawaii,2007:616-624.

[15] 饶长辉.非Kolmogorov湍流情况下低阶校正自适应光学系统的性能研究[D].北京: 中国科学院研究生院，2000.

RAO CH H. Performance analysis of low-order correction adaptive optical system for non-Kolmogorov turbulence[D]. Beijing: University of Chinese Academy of Sciences,2000.(in Chinese).

[16] RODDIER F,GILLI J M,LUND G. On the origin of speckle boiling and its effects in stellar speckle interferometry[J]. J. Optics(Paris),1982,13(5):263-271.

[17] FRIED D L. Time-delay-induced mean-square error in adaptive optics[J]. J. Opt. Soc. Am. A,1990,7(7):1224-1225.

卫沛锋, 刘欣悦, 林旭东, 张振铎, 董磊. 自适应光学系统测试中大气湍流的时域模拟[J]. 中国光学, 2013, 6(3): 371. WEI Pei-feng, LIU Xin-yue, LIN Xu-dong, ZHANG Zhen-duo, DONG Lei. Temporal simulation of atmospheric turbulence during adaptive optics system testing[J]. Chinese Optics, 2013, 6(3): 371.

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