Laser-Diode Phase-Shifting Joint-Transform Correlator with Multiple-Object Recognition

被引：0
|
作者：
Takeshi Takahashi
Yukihiro Ishii
机构：
[1] Tokyo University of Science,Department of Applied Physics
[2] University of Industrial Technology,Department of Electronic System Engineering
来源：
Optical Review | 2006年 / 13卷
关键词：
laser diode; wavelength tenability; phase-shifting interferometer; joint-transform phase correlator; multiple-object recognition;
D O I：
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学科分类号：
摘要：
A joint-transform phase correlation is made by an extracted phase from the joint power spectrum using a phase-shifting Mach-Zehnder interferometer with a wavelength-shifted laser diode (LD), and then by numerically Fourier-transforming a measured phase. The algorithm in six steps is insensitive to the power changes in an LD. The phase correlator gives the best discrimination performance. Discriminative multiple-object recognition is performed with no intermodulation noise and artifact noise-free correlation by arranging the multiple objects in a regularly equal-spaced array. The experimental and numerical results are shown.
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页码：53 / 63
页数：10
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