Title :
Improvement of the FMCW laser range-finder by an APD working as an optoelectronic mixer
Author :
Dupuy, David ; Lescure, Marc
Author_Institution :
Lab. d´´Electronique, Nat. Polytech. Inst. of Toulouse, France
fDate :
10/1/2002 12:00:00 AM
Abstract :
A laser range-finder has been designed for distances from 1 to 20 m with diffusing targets. The measurement principle using a frequency modulation continuous wave technique is first described. Improvement for short distance measurements is then proposed with a new set-up using a delay line and an avalanche photodiode working as an optoelectronic mixer used to obtain a wide-band and a low-noise photoreception.
Keywords :
avalanche photodiodes; distance measurement; frequency modulation; laser ranging; measurement by laser beam; optical modulation; 1 to 20 m; APD; FMCW laser range-finder; avalanche photodiode; delay line; diffusing targets; frequency modulation continuous wave technique; low-noise photoreception; measurement principle; optoelectronic mixer; short distance measurements; Avalanche photodiodes; Bandwidth; Capacitance; Distance measurement; Frequency measurement; Frequency modulation; Signal generators; Signal to noise ratio; Voltage-controlled oscillators; Wideband;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2002.806033
