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Improvement of the FMCW laser range-finder by an APD working as an optoelectronic mixer

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2 Author(s)
Dupuy, D. ; Lab. d''Electronique, Nat. Polytech. Inst. of Toulouse, France ; Lescure, M.

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.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:51 ,  Issue: 5 )