Title :
Real-time tracking experiment of higher-order Laguerre-Gaussian beam for remote six-axis deformation sensing
Author :
Ando, Shigeru ; Sato, Seichi ; Kurihara, Toru
Author_Institution :
Dept. of Inf. Phys. & Comput., Univ. of Tokyo, Tokyo, Japan
Abstract :
In INSS2008, we described a new principle for monitoring full-axis (three translational and three rotational) deformation of large and long structures such as bridges, roads, and railways. It is based on a combined use of an optical Laguerre-Gaussian (LG) beam and correlation image sensor (CIS). In this paper, we describe theoretically and examine experimentally several key issues of this technology. They are: 1) an optimum design of higher-order LG beam, 2) theoretical analysis on the relation between the beam profile and the deformation parameters, and 3) real-time tracking and parameter extraction algorithms of the LG beam and its parameters.
Keywords :
Gaussian processes; bridges (structures); condition monitoring; deformation; image sensors; railways; roads; structural engineering; INSS2008; bridges; correlation image sensor; higher order Laguerre-Gaussian beam; parameter extraction algorithms; railways; realtime tracking; remote six-axis deformation sensing; roads; structural health monitoring; Algorithm design and analysis; Bridges; Computational Intelligence Society; Image sensors; Optical beams; Optical sensors; Parameter extraction; Rail transportation; Remote monitoring; Roads; Laguerre-Gaussian beam; correlation image sensor; deformation sensing; structure health monitoring;
Conference_Titel :
Networked Sensing Systems (INSS), 2009 Sixth International Conference on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
978-1-4244-6313-8
Electronic_ISBN :
978-1-4244-6314-5
DOI :
10.1109/INSS.2009.5409941
