Enhancing correlation peak value in VLC based on diffraction characteristic of SLM

Shen Xueju; Yao Guangtao; Hu Wengang

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Enhancing correlation peak value in VLC based on diffraction characteristic of SLM

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- Enhancing correlation peak value in VLC based on diffraction characteristic of SLM
- Optics and Precision Engineering Vol. 16, Issue 11, Pages: 2110-2113(2008)
- 作者机构：
  
  军械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： O438.2
- Received：16 April 2008，
  
  Revised：15 June 2008，
  
  Published Online：25 November 2008，
  
  Published：25 November 2008
- 稿件说明：
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沈学举,姚广涛,胡文刚. 利用空间光调制器的衍射特性提高VLC输出相关峰值[J]. 光学精密工程, 2008,16(11):2110-2113

Shen Xueju, Yao Guangtao, Hu Wengang. Enhancing correlation peak value in VLC based on diffraction characteristic of SLM[J]. Optics and precision engineering, 2008, 16(11): 2110-2113.
沈学举,姚广涛,胡文刚. 利用空间光调制器的衍射特性提高VLC输出相关峰值[J]. 光学精密工程, 2008,16(11):2110-2113 DOI：

Shen Xueju, Yao Guangtao, Hu Wengang. Enhancing correlation peak value in VLC based on diffraction characteristic of SLM[J]. Optics and precision engineering, 2008, 16(11): 2110-2113. DOI：

摘要

VLC中，由于SLM像素的周期性结构，在匹配滤波面上产生目标图像的多级衍射谱。通过在不同级衍射谱处加载匹配滤波器进行匹配滤波，理论分析表明各级谱输出的相关点在输出面上位置相同，相干叠加的结果使输出相关峰值提高。实验验证表明该方法能有效提高VLC的输出相关峰值。

Abstract

The multilevel diffraction spectra of target image is obtained on the filtering plane because of the periodic structure of SLM in VLC

. Matched filters can be loaded at the position of different diffraction spectra on the filtering SLM to perform matched filtering of multilevel diffraction spectra. Theory analysis shows the correlation spots of different diffraction spectrums are at the same position of the output plane

and then the correlation peak value is enhanced by coherent superposition. It is verified by experiments that the output correlation peak of VLC can be effectively enhanced using this method.

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