The Real Time Processor LDV Signals with an Acoustooptic Light Deflector and a Position Sensitive Device

The Real Time Processor LDV Signals with an Acoustooptic Light Deflector and a Position Sensitive Device

This paper describes the signal processor by the use of an acoustooptic light deflector for processing of LDV signals in real time and with high speed. The position sensitive device using the lateral photo-effect of a semiconductor is investigated for real time measurement of the displacement of a b...

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Veröffentlicht in:Keisoku Jidō Seigyo Gakkai ronbunshū 1985/10/30, Vol.21(10), pp.1086-1091
Hauptverfasser: NAKATANI, Noboru, UEHARA, Atsunori, YAMADA, Tomoharu
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Sprache:eng
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laser Doppler velocimeter
optical computing
signal processing
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container_end_page 1091
container_issue 10
container_start_page 1086
container_title Keisoku Jidō Seigyo Gakkai ronbunshū
container_volume 21
creator NAKATANI, Noboru
UEHARA, Atsunori
YAMADA, Tomoharu
description This paper describes the signal processor by the use of an acoustooptic light deflector for processing of LDV signals in real time and with high speed. The position sensitive device using the lateral photo-effect of a semiconductor is investigated for real time measurement of the displacement of a beam spot with large intensity variation. The frequency response of the processor is 100kHz and the frequency resolution, 5kHz. As the processor is open loop system, it can process LDV signals in wide frequency range and with high speed compared with a conventional frequency tracker. Using the flow around a circular cylinder, it is demonstrated that this signal processor can be used for continuous and discontinuous LDV signals and is a powerful tool for highly instationary flow.
doi_str_mv 10.9746/sicetr1965.21.1086
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects laser Doppler velocimeter
optical computing
signal processing
title The Real Time Processor LDV Signals with an Acoustooptic Light Deflector and a Position Sensitive Device
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