Share Email Print

Proceedings Paper

Laser range-finding by phase-shift measurement: moving toward smart systems
Author(s): Stephane Poujouly; Bernard A. Journet
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The systems presented in this paper are based on phase-shift measurement. The first solution developed here is the heterodyne technique associated with direct counting. An improvement of the system consists in using digital PLL to reduce the phase noise. A second technique based on under-sampling technique, applied to digital synchronous detection, is described. Its main advantage is a global simplification of the electronic system, leading to a quite simple development of a twofold modulation system. This new technique is also very interesting to move towards a kind of smart range finder able to adapt different parameters to the different steps of the measurement.

Paper Details

Date Published: 12 February 2001
PDF: 9 pages
Proc. SPIE 4189, Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology, (12 February 2001); doi: 10.1117/12.417192
Show Author Affiliations
Stephane Poujouly, Ecole Normale Superieure de Cachan (France)
Bernard A. Journet, Ecole Normale Superieure de Cachan (France)

Published in SPIE Proceedings Vol. 4189:
Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology
Kevin G. Harding; John W. V. Miller; Bruce G. Batchelor, Editor(s)

© SPIE. Terms of Use
Back to Top