Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)
- Volume 20 Issue 1
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- Pages.206-213
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- 1996
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- 1226-4873(pISSN)
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- 2288-5226(eISSN)
DOI QR Code
Acousto-Optical Third Order Correlator Using 2-D Ultrasonic Diffractor Cell
2차원 초음파 회절격자를 이용한 음향-광3차 상관기의 구성
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Jang, Gyeong-Yeong
(Dept. of Precision Mechanical Engineering, Hanyang University)
;
- Sato, Takuso (Tokyo Institute of Technlogy)
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장경영
(한양대학교 정밀기계공학과)
;
- Published : 1996.01.01
Abstract
Third order correlation funciton is to be advantageous to detect unique features embedded in various random signals that are undetectable with second order correlation or power spectrum. In this paper, we will introduce optical modulator which consists of a laser light source, 2-dimensional ultrasonic diffractor cell with signal controlling circuitry, and a CCD camera connected to personal computer for image processing. With this modulator, the third order correlaiton pattern of signal can be immediately obtained at the camera due to parallel nature of optical computing.
Keywords