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Proceedings Paper

Lee filtered burst selecting in the photon correlation LDA signal processing
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Paper Abstract

The photon correlation Laser Doppler Anemometers were developed to measure the flow velocity also in the nanometer particle range. An LDA signal processing method has been developed for dividing the raw data line of photon correlation LDA into shorter parts corresponding to single particle transit (burst). The commonly used Lee filter was applied with some modification and an intelligent burst finding algorithm was developed. By this way the LDA system was adapted for single particle counting. The complete simulation algorithm gives an opportunity for discussing the burst selecting and so the particle counting efficiency as a function of the SNR. Size estimation from the burst size was discussed and compared to the model-based signal processing technique. The minimum detectable particle size was estimated.

Paper Details

Date Published: 28 April 2008
PDF: 11 pages
Proc. SPIE 7003, Optical Sensors 2008, 700314 (28 April 2008); doi: 10.1117/12.781146
Show Author Affiliations
Lénárd Vámos, Research Institute for Solid State Physics and Optics (Hungary)
Péter Jani, Research Institute for Solid State Physics and Optics (Hungary)


Published in SPIE Proceedings Vol. 7003:
Optical Sensors 2008
Francis Berghmans; Anna Grazia Mignani; Antonello Cutolo; Patrick P. Meyrueis; Thomas P. Pearsall, Editor(s)

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