电子散斑干涉离面位移场的调制与解调技术  

SPATIAL MODULATION AND ITS DEMODULATION FOR ELECTRONIC SPECKLE PATTERNS OF OUT-OF-PLANE DEFORMATION FIELD

作　　者：陶春先[1] 李爱华[2] 张丽[1] 孙平[1] 

机构地区：[1]山东师范大学物理与电子科学学院,济南250014 [2]山东警察学院侦察系,济南250014

出　　处：《山东师范大学学报（自然科学版）》2005年第4期33-35,共3页Journal of Shandong Normal University(Natural Science)

基　　金：山东省自然科学基金资助项目(01901)

摘　　要：利用电子散斑干涉技术物体的变形场进行定量测量.通过偏转参考物体法,实现散斑离面位移场的空间载波调制;结合傅里叶变换法解调,仅需一或两幅条纹图就可得出全场离面位移分布.理论分析与典型实验比较,表明该方法是可行的.Quantitative measurement of the deformation field is performed by ESPI. A spatial modulation method realized by tilting the reference is presented and performed to the modulation of the out-of plane deformation. Thus the deformation field can be demodulated by Fourier transformation method using only two speckle patterns. The measurement system and typical experiment results is presented, which proves the validity and feasibility of spatial modulation method for electronic soeckle oattems.

关 键 词：电子散斑干涉 调制 解词 位移场 

分 类 号：O348[理学—固体力学]