Title :
Fuzzy calibration for pulsed time-of-flight laser rangefinder
Author :
Sondej, T. ; Pelka, R.
Author_Institution :
Dept. of Electron., Mil. Univ. of Technol., Warsaw
Abstract :
A fuzzy approach to real-time calibration of mobile laser rangefinder is presented as an alternative to the methods based on adaptive algorithms. The main error source in such a measurement system is drift error due to the changes of ambient temperature. It may be compensated using repeatedly performed calibration based on the time-of-flight measurement of laser pulse propagating through the constant section of optical fiber. To minimize calibration rate we designed fuzzy calibrator that traces actual changes of drift error and calculates the optimum rate of calibration. This method has been tested using mobile laser rangefinder with 3 cm single-shot accuracy
Keywords :
calibration; fuzzy control; fuzzy logic; laser ranging; laser variables measurement; measurement errors; measurement systems; pulse measurement; real-time systems; signal processing equipment; time measurement; drift error; fuzzy calibration; laser pulse propagation; laser ranging system; mobile laser rangefinder; real-time calibration; time-of-flight measurement; Adaptive algorithm; Calibration; Fiber lasers; Optical fibers; Optical propagation; Optical pulses; Performance evaluation; Pulse measurements; Temperature; Testing;
Conference_Titel :
Computational Intelligence for Measurement Systems and Applications, 2004. CIMSA. 2004 IEEE International Conference on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-8341-9
DOI :
10.1109/CIMSA.2004.4557941
