采用光栅混频、偏振移相的多普勒位移测量技术的研究  

Study of Laser-Doppler Displacement-measuring Technique by Polarization Phase-shifting and Grating Produced Frequency Beat

作　　者：洪昕[1] 张德芬[1] 蒋诚志[1] 陈林才[1] 张海翔[1] 

机构地区：[1]天津大学精仪与光电子学院,天津300072

出　　处：《中国激光》1998年第5期432-436,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金资助项目(No.59375257)。

摘　　要：研究了利用运动光栅作散射体的激光多普勒效应进行远距离目标横向位移的检测技术。采用光栅混频、偏振移相的光路设计,进行了测量原理分析,从理论上给出了在其方向辨别中的偏振移相方法。This paper studied the lateral displacement-measurement technique by using the laser Doppler effect of the moving grating which acted as a scatterer. The measurement principle was described by analyzing the optical system in which the grating was chosen to produce beat frequency while the polarization was used to obtain phase-shift. The direction identification principle using polarization phase-shift was also analyzed.

关 键 词：光栅混频 偏振移相 横向位移 激光多普勒测量 

分 类 号：TN247[电子电信—物理电子学]