摘要
基于哈特曼波前探测的流场层析重建技术结合了光学波前探测技术和计算机层析技术。重建系统由哈特曼传感器探测平行光束穿过流场后的投影波前,采用计算机层析技术重建流场物理量的空间分布。在介绍哈特曼流场层析重建原理的基础上,对流场重建的整个过程进行了计算机仿真,重建的RMS误差为0.0726。结果表明,该技术可以很好地实现流场的层析重建,在材料、流场研究等工程实际测量中具有良好的应用前景。
A new method of tomography reconstruction from Hartmann wave-front sensing is presented which combines wave-front sensing technique with computerized tomography reconstruction technique. The projections of field are obtained by Hartmann wave-front sensor, and an estimation of physical parameter spatial distribution is realized by computerized tomography reconstruction technique. On the basis of the principle of flow tomography reconstruction, a simulation to the whole process is conducted and a 0.0726 RMS error is obtained. The result indicates that this method can well realize flow tomography reconstruction and has a considerable potential to material and flow investigation applications.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2005年第8期13-15,共3页
Opto-Electronic Engineering
关键词
计算机层析
哈特曼波前传感器
图像重建
流场测量
Computer tomography
Hartmann wave-front sensors
Image reconstruction
Flow field measurement
