Particle velocity measurement by low-coherence Doppler lidar

Kosuke Okubo; Nofel Lagrosas; Tatsuo Shiina

doi:10.1117/12.2604194

14 November 2021 Particle velocity measurement by low-coherence Doppler lidar

Kosuke Okubo, Nofel Lagrosas, Tatsuo Shiina

Proceedings Volume 11914, SPIE Future Sensing Technologies 2021; 119140B (2021) https://doi.org/10.1117/12.2604194
Event: SPIE Future Sensing Technologies, 2021, Online Only

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

Citation Download Citation

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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