The feasibility of fast single-bit sampling for multi-point laser Doppler anemometry

• Published in: Measurement science & technology Vol. 5; no. 5; pp. 473 - 481
• Main Authors: Ewan, B C R, Swithenbank, J
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.05.1994; Institute of Physics
• Subjects: Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Instrumentation for fluid dynamics; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Mechanical instruments, equipment and techniques; Physics; Design; Photomultipliers; Data acquisition; Multichannel detection; Fluid flow; Speed measurement; Laser Doppler anemometers; Instrumentation; Data processing; Feasibility

A practical route is explored making use of high speed components for fast LDA signal sampling and storage, followed by fast Fourier transform signal analysis. A demonstration system is constructed consisting of ten optical channels arranged in a linear array, a single LDA sampling card and a contro...