数字散斑相关法测量连续位移的原理与实验  

Principle and Experiment of Digital Speckle Autocorrelation Measuring Seriate Displacement

作　　者：闫海涛[1] 王鸣[1] 赖方明[1] 韩道福[1] 

机构地区：[1]南京师范大学物理科学与技术学院江苏省光电技术重点实验室,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2006年第2期44-47,共4页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50375074);江苏省高新技术基金资助项目(BG2003024)

摘　　要：提出用数字散斑相关方法测量移动物体的连续位移.激光照射粗糙表面形成散斑场,用CCD记录粗糙表面移动时的序列散斑图像,利用数字散斑相关方法分析散斑图像,确定粗糙表面的位移.研究结果表明,数字散斑相关技术可以高精度地测出连续移动物体的位移.The digital speckle autocorrelation function is presented to measure seriate displacement of moving object. A series of speckle patterns are shot by CCD camera when laser irradiates the rough surface of a moving object. Based on the digital speckle autocorrelation method, these speckle patterns are analyzed, and the displacement of the objects is determined. The result of experiment indicates that digital speckle autocorrelation is capable of measuring the seriate displacement accurately.

关 键 词：数字散斑 自相关函数 连续位移 

分 类 号：TN247[电子电信—物理电子学]