Title :
A FMCW laser range-finder based on a delay line technique
Author :
Dupuy, D. ; Lescure, M. ; Cousineau, M.
Author_Institution :
Lab. d´´electron., ENSEEIHT, Toulouse, France
Abstract :
A laser range-finder has been designed for distances from 1 m to 20 m with diffusing targets. The measurement principle using a frequency modulation continuous wave technique is firstly described. Triangular and sine frequency modulation types are both analyzed. Improvements for short distance measurements and for low noise photoreception are then proposed. The designed set-up is also theoretically compared to a phase-shift laser range-finder in order to point up its main advantages
Keywords :
avalanche photodiodes; frequency modulation; laser ranging; optical delay lines; optical modulation; 1 to 20 m; APD detection; FMCW laser rangefinder; delay line technique; diffusing targets; low noise photoreception; nonlinear detection; optoelectronic mixer; short distance measurements; sine frequency modulation; triangular frequency modulation; Avalanche photodiodes; Delay lines; Distance measurement; Frequency modulation; Laser noise; Laser theory; Optical design; Optical modulation; Optical noise; Voltage-controlled oscillators;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928247
