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A Study for Layer Grating Laser Doppler Vibration Measuring System

Wang Baocheng, L(?) Jiechi (Dalian University of Technology)Wang Menggang (Dalian Branch, Orient Computer Technology Developing Limited)  
By means of single-cycle layer grating, the laser Doppler vibration measur-ing system discriminating velocity orientation by rotating field is a new velocitymeasuring instrument developed in recent years.Based on the description ofmeasuring principle, the optics of the system, photoelectric conversion, frequen-cy-pressure conversion and signal processing by microcomputer are emphaticallypresented. Theoretical and experimental results are summerized.
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