Smíd Petr, Horváth Pavel, Hrabovský Miroslav
Joint Laboratory of Optics of Palacky University and Institute of Physics of the Academy of Sciences of the Czech Republic, Olomouc, Czech Republic.
Appl Opt. 2007 Jun 20;46(18):3709-15. doi: 10.1364/ao.46.003709.
We present a measurement of an object's in-plane velocity in one direction by the use of the speckle correlation method. Numerical correlations of speckle patterns recorded periodically during motion of the object under investigation give information used to evaluate the object's in-plane velocity. The proposed optical setup uses a detection plane in the image field and enables one to detect the object's velocity within the interval (10-150) microm x s(-1). Simulation analysis shows a way of controlling the measuring range. The presented theory, simulation analysis, and setup are verified through an experiment of measurement of the velocity profile of an object.
我们介绍了一种通过散斑相关法测量物体在一个方向上的面内速度的方法。在被研究物体运动过程中定期记录的散斑图案的数值相关性提供了用于评估物体面内速度的信息。所提出的光学装置在像场中使用一个检测平面，并能够在（10 - 150）微米×秒⁻¹的区间内检测物体的速度。模拟分析展示了一种控制测量范围的方法。通过对物体速度分布的测量实验验证了所提出的理论、模拟分析和装置。
