Title :
A low-cost laser range finder based on an FMCW-like method
Author :
Journet, Bernard ; Bazin, Gaëlle
Author_Institution :
LESIR, Cachan, France
fDate :
8/1/2000 12:00:00 AM
Abstract :
The purpose of this paper is to present the prototype of a low-cost laser range finder. It belongs to the flight time measurement category. In this case, the time of flight is converted into a beat frequency proportional to the distance to be measured. This physical conversion is realized with an optical power modulation of the laser beam by a chirped wave. The experimental set-up is detailed with the main functional blocks. Experimental results are provided and the main possible improvements are discussed
Keywords :
CW radar; chirp modulation; delay estimation; laser ranging; optical radar; voltage-controlled oscillators; FMCW; beat frequency; chirp modulation; delay estimation; flight time measurement; laser range finder; optical power modulation; physical conversion; semiconductor laser; time of flight; voltage controlled oscillator; Chirp modulation; Frequency conversion; Frequency measurement; Laser beams; Laser theory; Optical frequency conversion; Optical modulation; Power lasers; Prototypes; Time measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
