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

fYear

2009

fDate

5-7 May 2009

Firstpage

1059

Lastpage

1062

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE

Conference_Location

Singapore

ISSN

1091-5281

Print_ISBN

978-1-4244-3352-0

Type

conf

DOI

10.1109/IMTC.2009.5168610

Filename

5168610