| 球面散射屏远场散斑的若干统计特征 |
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| 引用本文： | 于晓江.球面散射屏远场散斑的若干统计特征[J].武汉大学学报(信息科学版),1992(4). |
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| 作者姓名： | 于晓江 |
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| 摘 要： | 本文采用标量衍射理论导出球面屏衍射的瑞利-索末菲公式及其远场近似。并据此导出球面散射屏远场散斑的若干统计特征。
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| 关 键 词： | 激光散斑 散斑计量 统计光学 散斑干涉 |
Some Statistic Characters of Speckle Field Diffused by a Spherical Screen |
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| Yu Xiaojiang.Some Statistic Characters of Speckle Field Diffused by a Spherical Screen[J].Geomatics and Information Science of Wuhan University,1992(4). |
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| Authors: | Yu Xiaojiang |
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| Institution: | Yu Xiaojiang |
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| Abstract: | Rayleigh-Sommerfeld theory of planar screen diffraction is extended to spherical cases, related diffraction formula and its far field approximant within the spherical coordinate system are produced. On this basis, the statistic characters of far field speckle intensity are studied, the far field speckle intensity is theoreticaly verified to be spatial stable stachastic process. Lateral and longitudinal correlation radii are deduced, which are different from planar cases. |
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| Keywords: | laser speckle speckle metrology statistic optics speckle coherence |
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