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科学通报  2011 

不同孔径时旋转曲面目标的散斑统计特性

DOI: 10.1360/972010-1133, PP. 281-287

Keywords: 动态散斑,探测孔径,曲率半径,相关时间

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Abstract:

研究了高斯波束照射旋转曲面目标在菲涅耳衍射区产生的动态散斑强度起伏的统计特性,推导了探测孔径尺寸大小不同时,散斑强度起伏相关函数依赖于旋转目标曲率半径的关系.在不同探测孔径大小情况下,首先计算了平面目标与球目标的相关距离,接着给出了曲面目标以恒定角速度旋转时散斑强度起伏的相关时间随曲率半径的变化关系.最后,介绍了相关函数与探测时间之间的变化情况.结果表明,采用一定尺寸的探测孔径代替点探测时,曲面目标的散斑强度起伏的相关时间变得更容易测量.通过测量曲面目标的散斑强度起伏的相关时间可以非接触、非破坏性地测量旋转凸体的曲率半径.

References

[1]  Takai N, Iwai T, Asakura T. An Effect of curvature of rotating diffuse objects of the dynamics of speckles produced in the diffractionfield. Appl Phys, 1981, B26: 185.192 [2] Marron J, Moms G M. Image-plane speckle from rotating, rough objects. Opt Soc Am, 1985, A2: 1395.1402 [3] Marron J, Schraeder K S. Speckle from rough rotating objects. Appl Optics, 1988, 27: 4279.4285 [4] Hayashi A, Kitagawa Y. High-resolution ration-angle measurement of a cylinder using speckle displacement detection. Appl Opt, 1983,22: 3520.3527 [5] Yura T, Hanson G, Lading L. Laser Doppler velocimetry: Analytical solution to the optical system including the effects of partial coherenceof the target. Opt Soc Am, 1995, A12: 2040.2407 [6] Nakamura T, Asakura T. Statistical properties of dynamic speckles produced by a curved surface. Opt Commun, 1993, 98: 331.340 [7] 张宁玉, 滕树云, 董前民, 等. 变孔径像面散斑平均光强标定随机表面的理论与实验. 物理学报, 2001, 50: 865.870 [8] 刘曼, 程传福, 宋洪胜, 等. 方形环孔和圆环孔形成的散斑场及相位奇异特性的理论分析和实验验证. 物理学报, 2010, 59: 964.972
[2]  Takai N, Iwai T, Asakura T. An Effect of curvature of rotating diffuse objects of the dynamics of speckles produced in the diffractionfield. Appl Phys, 1981, B26: 185.192
[3]  Marron J, Moms G M. Image-plane speckle from rotating, rough objects. Opt Soc Am, 1985, A2: 1395.1402
[4]  Marron J, Schraeder K S. Speckle from rough rotating objects. Appl Optics, 1988, 27: 4279.4285
[5]  Hayashi A, Kitagawa Y. High-resolution ration-angle measurement of a cylinder using speckle displacement detection. Appl Opt, 1983,22: 3520.3527
[6]  Yura T, Hanson G, Lading L. Laser Doppler velocimetry: Analytical solution to the optical system including the effects of partial coherenceof the target. Opt Soc Am, 1995, A12: 2040.2407
[7]  Nakamura T, Asakura T. Statistical properties of dynamic speckles produced by a curved surface. Opt Commun, 1993, 98: 331.340
[8]  张宁玉, 滕树云, 董前民, 等. 变孔径像面散斑平均光强标定随机表面的理论与实验. 物理学报, 2001, 50: 865.870
[9]  刘曼, 程传福, 宋洪胜, 等. 方形环孔和圆环孔形成的散斑场及相位奇异特性的理论分析和实验验证. 物理学报, 2010, 59: 964.972

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