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Computer Simulation for the Image Intensity Centroid Fluctuation Caused by Laser Speckle

Li Jitao, Xiang Liqun, Xian Tao, Su Xianyu (Department of Optoelectronics,Sichuan Union University,Chengdu,610064)  
A basic uncertainty is introduced into measurement with the image centroid fluctuation caused by laser speckle.The basic uncertainty has been simulated by computer and the obtained simulation curve is basically coincident with the curve obtained by R.G.Dorsch,G.Hausler et al.In addition,the relations both between the basic uncertainty and surface roughness,basic uncertainty and the relative unit number included in point spread function of the imaging system are also investigated in the paper.
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