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Proceedings Paper

A novel high-speed opto-electronic hybrid correlator for recognition and tracking
Author(s): Jing-gao Sui; Wu-sheng Tang; Xiao-ya Zhang; Chen-cheng Feng; Hui Jia
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Paper Abstract

Opto-electronic hybrid correlator can realize the combination of electronic flexibility and high speed of optical computing, so it has widely potential applications in high speed optical information processing system, especially recognition and tracking system. But the opto-electronic conversion speed and the positioning accuracy of correlation peak constrains the performance of this system. This paper first proposes an idea that PSD(Position Sensitive Device) can be applied in optical correlation peak detection instead of traditional CMOS/CCD sensor. It is displayed by theoretical analysis that this system can attain a correlation calculation speed of 20,000 frames per second, which indicates that the system can satisfy high speed demands of target recognition and tracking. Through optimal design of Fourier lens, the size, shape and intensity of the correlation peak spot have been optimized to satisfy the positioning accuracy requirement of PSD. The property of PSD can lead to nonlinear displacement error of the correlation peak and this paper use a linear line to fit the experimental outcome. Besides, this paper introduce the definition positioning accuracy, which is defined the maximum deviation apart from fitting linear outcome. The positioning accuracy of the novel opto-electronic hybrid correlator is calculated approximate 10 pixels (0.04mm), which is small enough to satisfy the demand of recognizing and tracking a target. In conclusion, a high speed and high accuracy recognition and tracking system has been realized based on the opto-electronic hybrid correlator.

Paper Details

Date Published: 27 November 2012
PDF: 8 pages
Proc. SPIE 8559, Information Optics and Optical Data Storage II, 85590H (27 November 2012); doi: 10.1117/12.999516
Show Author Affiliations
Jing-gao Sui, National Univ. of Defense Technology (China)
Wu-sheng Tang, National Univ. of Defense Technology (China)
Xiao-ya Zhang, National Univ. of Defense Technology (China)
Chen-cheng Feng, National Univ. of Defense Technology (China)
Hui Jia, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 8559:
Information Optics and Optical Data Storage II
Feijun Song; Hui Li; Xiudong Sun; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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