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Proceedings Paper

AMCW laser rangefinder for machine vision using two modulation frequencies for wide measurement range and high resolution
Author(s): Sara Perez; E. Garcia; Horacio Lamela
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Paper Abstract

Short-range laser rangefinders are the object of intense research effort due to their wide range of applications in tasks such as machine vision, automated inspection and 3D range map acquisition. For ranges of up to a few meters, Amplitude Modulation Continuous Wave (AMCW) systems using modulation frequencies in the range of several MHz, have obtained very interesting results. However, these systems presents a trade-off between maximum range and minimum measurement resolution, which is indeed a problem. In this work we present the conception and first experimental results of an AMCW system that employs two different modulation frequencies to overcome this problem and achieve both wide measurement range and good resolution.

Paper Details

Date Published: 14 April 1999
PDF: 5 pages
Proc. SPIE 3626, Testing, Packaging, Reliability, and Applications of Semiconductor Lasers IV, (14 April 1999); doi: 10.1117/12.345414
Show Author Affiliations
Sara Perez, Univ. Carlos III de Madrid (Spain)
E. Garcia, Univ. Carlos III de Madrid (Spain)
Horacio Lamela, Univ. Carlos III de Madrid (Spain)

Published in SPIE Proceedings Vol. 3626:
Testing, Packaging, Reliability, and Applications of Semiconductor Lasers IV
Mahmoud Fallahi; S. C. Wang; Mahmoud Fallahi; Kurt J. Linden; S. C. Wang, Editor(s)

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