Presentation + Paper
14 November 2021 Particle velocity measurement by low-coherence Doppler lidar
Author Affiliations +
Abstract
In this work, we propose a low-coherence Doppler lidar (LCDL) to measure particle velocity at near-surface atmosphere. To measure particle velocity information at near-surface atmosphere, it is necessary to conduct the measurement at high frequency and resolution. Low coherence light source can satisfy this high-resolution criterion. We discuss the system efficiency to detect atmospheric echoes by theoretical analysis. In the particle velocity experiment, Doppler shifted frequency is about 5 MHz and the particle velocity calculated from the peak Doppler signal is 2.7 m/s, while minimum and maximum velocity are 1.85 and 2.92 m/s, respectively. Anemometer result shows good agreement with LCDL results.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kosuke Okubo, Nofel Lagrosas, and Tatsuo Shiina "Particle velocity measurement by low-coherence Doppler lidar", Proc. SPIE 11914, SPIE Future Sensing Technologies 2021, 119140B (14 November 2021); https://doi.org/10.1117/12.2604194
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KEYWORDS
Velocity measurements

Doppler effect

LIDAR

Atmospheric particles

Wind measurement

Particles

Signal to noise ratio

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