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Proceedings Paper

Heterodyne detection of doppler signal of dynamic speckles by spaced photodetectors
Author(s): Vyacheslav Aranchuk
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Paper Abstract

In this paper the heterodyning detection of the Doppler signal of dynamic speckles by spaced photodetectors is studied theoretically. The investigation is carried out on the assumption that the laser field scattered by the diffuse object is the Gaussian speckles and the signal processing is implemented by the maximum amplitude channel section. It is shown that the detection probability of Doppler signal by spaced photodetectors increases with the increase of detection probability PD1 when only one photodetector is used. The spaced detection is practically effective for PD1 approximately greater than 0.85. The detection probability value close to the theoretically attainable maximum value takes place when 4-5 spaced photodetectors are used.

Paper Details

Date Published: 15 January 1996
PDF: 5 pages
Proc. SPIE 2628, Optical and Imaging Techniques for Biomonitoring, (15 January 1996); doi: 10.1117/12.230007
Show Author Affiliations
Vyacheslav Aranchuk, Scientific Ctr. for Machine Mechanics Problems (Belarus)

Published in SPIE Proceedings Vol. 2628:
Optical and Imaging Techniques for Biomonitoring
Hans-Jochen Foth; Renato Marchesini; Halina Podbielska M.D.; Michel Robert-Nicoud; Herbert Schneckenburger, Editor(s)

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