摘要
提出一种获取流场干涉条纹折射率分布的新方法。该方法首先采用不等间隔的环带分割轴对称流场,使折射率变化大的地方获得的数据点密,然后通过对Abel变换进行离散数值计算来获取流场的折射率分布。通过模拟轴对称流场的实时全息干涉条纹证明了该方法不仅简单易行,而且所获取的折射率分布精度高。
A new method of obtaining the distribution of refractive index from interference fringes is proposed.This method uses a series of different space concentric circles to zone the axis symmetry flow field,so the many data points are obtained in the great change distribution of the refractive index.The space distribution of refraction index is calculated by utilizing Abel conversion. By the computer simulation of the real-time holographic interference fringes around the axis symmetry flow field,the results show that it is not only simple,but is also high accurate in obtaining the distribution of refractive index from interference fringes.
出处
《光学技术》
CAS
CSCD
北大核心
2008年第S1期323-325,共3页
Optical Technique
关键词
干涉测量
实时全息
ABEL变换
环带分割
holographic interferogram
real-time holographic
Abel transform
concentric circle
