Temporal evolution of the optical path difference of a supersonic turbulent boundary layer

被引：0

作者：

高穹 ^{[1
]}

易仕和 ^{[2
]}

姜宗福 ^{[1
]}

何霖 ^{[2
]}

谢文科 ^{[1
]}

机构：

[1] College of Photon-electron Science and Engineering, National University of Defense Technology

[2] College of Aerospace and Material Engineering, National University of Defense Technology

来源：

Chinese Physics B | 2013年 / 22卷 / 01期

基金：

中国国家自然科学基金;

关键词：

aero-optics; supersonic turbulent boundary layer; optical transfer function;

D O I：

暂无

中图分类号：

V241 [航空仪表、航空设备];

学科分类号：

08 ; 0825 ;

摘要：

The density distribution of a supersonic turbulent boundary layer is measured with the nanoparticle-based planar laser scattering technique, and the temporal evolution of its optical path difference (OPD) in a short time interval is characterized by proper orthogonal decomposition (POD). Based on the advantage of POD in capturing the energy of a signal, a temporal evolution model is suggested for the POD coefficients of the OPD. In this model, the first few coefficients vary linearly with time, and the others are modeled by Gaussian statistics. As an application, this method is used to compute the shortexposure optical transfer function.

引用

页码：231 / 236

页数：6

共 4 条

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[2] Supersonic flow imaging via nanoparticles[J] . YuXin Zhao,ShiHe Yi,LiFeng Tian,ZhongYu Cheng. Science in China Series E: Technological Sciences . 2009 (12)
[3] Study of density field measurement based on NPLS technique in supersonic flow[J] . LiFeng Tian,ShiHe Yi,YuXin Zhao,Lin He,ZhongYu Cheng. Science in China Series G: Physics, Mechanics and Astronomy . 2009 (9)
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