Title :
Pulse width time walk compensation method for a pulsed time-of-flight laser rangefinder
Author :
Kurtti, Sami ; Kostamovaara, J.
Author_Institution :
Dept. of Electr. & Inf. Eng., Univ. of Oulu, Oulu, Finland
Abstract :
A new walk compensation method for a pulsed time-of-flight rangefinder is suggested. The receiver channel operates without gain control using leading edge timing discrimination principle. The generated walk error is compensated for by measuring the pulse length and knowing the relation between the walk error and pulse length. The walk compensation is possible also at the range where the signal is clipped and where the compensation method by amplitude measurement is impossible. Based on the simulations walk error can be compensated within the dynamic range of 1:30 000.
Keywords :
laser ranging; optical radar; pulse measurement; amplitude measurement; laser radar; leading edge timing discrimination principle; pulse length measurement; pulse width time walk compensation method; pulsed time-of-flight laser rangefinder; walk error generation; Dynamic range; Gain control; Laser radar; Length measurement; Optical pulse generation; Optical pulses; Optical receivers; Pulse measurements; Space vector pulse width modulation; Timing;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-3352-0
DOI :
10.1109/IMTC.2009.5168610
