| 纵向运动双散射散斑场的动态特性研究 |
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| 引用本文： | 孙虹,刘迎,马世宁. 纵向运动双散射散斑场的动态特性研究[J]. 光学学报, 1999, 19(2): 81-185 |
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| 作者姓名： | 孙虹 刘迎 马世宁 |
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| 作者单位： | 1. 清华大学现代应用物理系,单原子分子测控科学中心,北京,100084;中国科学院化学研究所分子反应动力学国家重点实验室,北京,100080
2. 天津大学应用物理系,天津,300072 |
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| 基金项目： | 中国博士后基金,国家自然科学基金 |
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| 摘 要： | 研究了慢纵向运动双散射散斑场的统计性质，得出纵向运动双散射散斑振幅自相关函数、强度涨落自相关函数，并由此得出，夫朗和费衍射区内的接收平在上任意点上的自相关函数是时间的非平稳随机过程，而在光轴附近小区域内，强度涨落自相关函数是时间的平稳随机过程，相关时间与散射体纵向运动速度或反比，理论和实验结果相一致。
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| 关 键 词： | 纵向运动双散射散斑场 振幅自相关函数 强度涨落自相关函数 |
| 收稿时间： | 1997-08-25 |
Dynamic Characteristics of Double Scattering Speckle Field in Longitudinal Motion |
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| Sun Hong,Liu Ying,Ma Shining. Dynamic Characteristics of Double Scattering Speckle Field in Longitudinal Motion[J]. Acta Optica Sinica, 1999, 19(2): 81-185 |
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| Authors: | Sun Hong Liu Ying Ma Shining |
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| Abstract: | Statistical characteristics of double scattering speckle field in longitudinal motion is studied in detail. Its autocorrelation function of amplitude and intensity fluctuations are derived. At the receiving plane within the far field diffraction region, the autocorrelation function of speckle intensity fluctuations is not generally statistically stationary. While, the time varying speckle intensity variations become statistically stationary in the vicinity of the center of far field diffraction plane. The velocity of the diffuser is in inverse proportion to the correlation time. The theoretical result is consistent with the experimental result. |
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| Keywords: | double scattering speckle produced by longitudinal moving autocorrelation function of amplitude autoccorelation function of intensity fluctuations. |
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