A Fmcw Laser Range-Finder Based On A Delay Line Technique
IMTC/2001: PROCEEDINGS OF THE 18TH IEEE INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE, VOLS 1-3: REDISCOVERING MEASUREMENT IN THE AGE OF INFORMATICS（2001）
摘要
A laser range-finder has been designed for distances from 1m to 20m with diffusing targets. The measurement principle using a Frequency Modulation Continuous Wave technique is firstly described. Triangular and sine frequency modulation types are both analyzed. Improvements for short distance measurements and for low noise photoreception are then proposed. The designed set-up is also theoretically compared to a phase-shift laser rangefinder in order to point up its main advantages.
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关键词
laser range-finder, distance measurement, FMCW, frequency modulation, delay line, non-linear detection, avalanche photodiode
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