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15 January 1996 Heterodyne detection of Doppler signal of dynamic speckles by spaced photodetectors
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vyacheslav Aranchuk "Heterodyne detection of Doppler signal of dynamic speckles by spaced photodetectors", Proc. SPIE 2628, Optical and Imaging Techniques for Biomonitoring, (15 January 1996); https://doi.org/10.1117/12.230007
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