基于散斑位移相关器的相关峰增强技术

提出的基于光学数字联合变换的光学散斑位移相关器,用来确定亚像素精度相关峰的位置,却没有使用复杂的插值算法.为了实现相关峰的放大,对相关器的主要参数进行了分析和计算.并以此建立了实现光学散斑位移技术的实验装置,实验结果表明,该装置能产生尖锐和狭窄的相关峰,且能以亚像素精度发现峰位置.

Research on Correlation Peak Enhancement Technique Based on Speckle displacement Correlator

The proposed optical speckle displacement correlator based on hybrid optical electronic joint transform correlator architecture has been used to determine the correlation peak position with subpixel accuracy,without using the intricate interpolation algorithms.A thorough analysis and a calculation of the main parameters of the correlator are performed in order to obtain an accurate defnition of the peak position.An experiment setup for realization of the optical speckle displacement technique has been constructed.The experimental results have shown that the setup can produce sharp and narrow correlation peaks, and the peak position with subpixel accuracy can be found.