Only-one correlation-peak joint transform correlator based on Mach-Zehnder interferometer

DENG Xiao-peng

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Only-one correlation-peak joint transform correlator based on Mach-Zehnder interferometer

Article | 更新时间：2020-08-12

- Only-one correlation-peak joint transform correlator based on Mach-Zehnder interferometer
- Optics and Precision Engineering Vol. 17, Issue 3, Pages: 499-505(2009)
- 作者机构：
  
  怀化学院物理与电子科学信息系,湖南怀化,418008
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH744.3
- Received：15 March 2008，
  
  Revised：04 June 2008，
  
  Published Online：25 March 2009，
  
  Published：25 March 2009
- 稿件说明：
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邓晓鹏. 基于马赫-曾德尔干涉仪的单相关峰联合变换相关技术[J]. 光学精密工程, 2009,17(3): 499-505

DENG Xiao-peng. Only-one correlation-peak joint transform correlator based on Mach-Zehnder interferometer[J]. Editorial Office of Optics and Precision Engineering, 2009,17(3): 499-505
邓晓鹏. 基于马赫-曾德尔干涉仪的单相关峰联合变换相关技术[J]. 光学精密工程, 2009,17(3): 499-505 DOI：

DENG Xiao-peng. Only-one correlation-peak joint transform correlator based on Mach-Zehnder interferometer[J]. Editorial Office of Optics and Precision Engineering, 2009,17(3): 499-505 DOI：

摘要

针对经典联合变换相关器互相关峰能量分散以及输入图像大小和相对位置受到限制的缺陷

提出了基于马赫-曾德尔干涉仪的单相关峰联合变换相关技术。目标图像和参考图像通过马赫-曾德尔干涉仪的两臂无相对位移输入

实现了互相关峰重叠位于探测器中心

缓解了输入图像的大小和相对位置与变换透镜孔径和探测器接收面积之间的矛盾;采用功率谱相减技术

消除了零级自相关峰对互相关峰的影响

增强了衍射效率。理论分析和实验结果表明

该方法不仅能获得高强度的单相关峰

使抗噪声能力是CJTC的6倍

从而大大增强了识别能力

而且充分利用了输入面空间带宽和探测器的效率

降低了系统成本

特别适合于弱信号噪声环境和大尺寸图像的识别。

Abstract

An only-one correlation-peak joint transform correlator based on Mach-Zehnder interferometer is presented aiming at the shortcomings in the energy dispersion of correlation peak and of Classic Joint Transform Correlator(CJTC) the input image size and relative position to be restricted. The image input of proposed method has no relative displacement between input images by Mach-Zehnder interferometer

and realizes a high intensity overlap correlation-peak in the center of detector

so that the contradiction between the input image size and relative position with the transform lens aperture and detector reception area is relaxed. Moreover

zero-order autocorrelation peak is eliminated and diffraction efficiency is enhanced by power spectrum subtraction. The theoretical analysis and experimental results show that proposed method can offer a high intensity correlation-peak and its anti-noise ability is six times that of CJTC

which enhances the recognition ability of the system. Also

this method makes good use of the space bandwidth and reduces the system costs

so that it is suitable for large size image recognition and weak signal detection in noisy environment.

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references

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