| 大气湍流随机相位差的相关解调算法研究 |
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| 引用本文： | 肖树妹,梅海平,钱仙妹,饶瑞中.大气湍流随机相位差的相关解调算法研究[J].光学学报,2011(2):19-23. |
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| 作者姓名： | 肖树妹 梅海平 钱仙妹 饶瑞中 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所大气光学研究中心;中国科学院大气成分与光学重点实验室;中国科学院研究生院; |
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| 基金项目： | 中国科学院科研装备研制项目(YZ200923)资助课题 |
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| 摘 要： | 根据大气光学湍流的光纤干涉测量技术原理及其信号表现形式,针对湍流相位变化的随机性和复杂性,提出了能够实时解调湍流随机相位差的相关解调算法,数值模拟了固定相位差、波形相位差以及符合湍流频谱特征的随机相位差的解调.结果表明,此算法的绝对误差小于10-3,满足湍流测量的要求.该研究为实现光学湍流相位差的动态检测提供了必要的理...
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| 关 键 词： | 大气光学湍流 随机相位差 相关解调算法 数值模拟 |
Atmospheric Turbulence Random Phase Difference with the Demodulating Algorithm of Correlation |
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| Xiao Shumei, Mei Haiping, Qian Xianmei, Rao Ruizhong.Atmospheric Turbulence Random Phase Difference with the Demodulating Algorithm of Correlation[J].Acta Optica Sinica,2011(2):19-23. |
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| Authors: | Xiao Shumei Mei Haiping Qian Xianmei Rao Ruizhong |
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| Institution: | Xiao Shumei1,2,3 Mei Haiping1,2 Qian Xianmei1,2 Rao Ruizhong1,2(1Center for Atmospheric Optics,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei,Anhui 230031,China2Key Laboratory of Atmospheric Composition and Optical Radiation,China3Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | An algorithm for real-time demodulation of random turbulence phase difference is proposed according to the principle and signal expression of fiber optic turbulence measurement system.Fixed,waveform and random turbulence phase difference are all simulated and demodulated to demonstrate the applicability of the algorithm.Result shows that absolute error between demodulated and simulated phase difference is less than 10-3,which satisfies the demand of turbulence measurement.The research provides an important ... |
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| Keywords: | atmospheric optical turbulence random phase difference demodulating algorithm of correlation numerical simulation |
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