FireLidar development: light scattering from wood smoke experiments and theory at 1574 nm

Edward T. Dressler; Richard I. Billmers; Elizabeth J. Billmers; Mary E. Ludwig

doi:10.1117/12.679265

7 September 2006 FireLidar development: light scattering from wood smoke experiments and theory at 1574 nm

Edward T. Dressler, Richard I. Billmers, Elizabeth J. Billmers, Mary E. Ludwig

Proceedings Volume 6294, Infrared and Photoelectronic Imagers and Detector Devices II; 62940I (2006) https://doi.org/10.1117/12.679265
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Measurements and lidar calculations have been made for 1574 nm laser light pulsed through hydrocarbon smoke generated by wood. A pulsed laser signal is directed to the end of wood smoke filled chamber. The signal is reflected back through the smoke by a mirror and the end of the chamber and the total returned energy is measured as a function of the smoke density. The results are compared with a lidar calculation using Rayleigh-Debye-Ganz scattering theory for fractal aggregates. Measurements and calculations are also made of the total backscattered signal for a smoke chamber with a non-reflecting surface. Relatively good agreement between the theory and experimental results are achieved in both cases. These results are used in the feasibility studies of a FireLidar active imaging system being developed for use in search and rescue in smoke and flame environments.

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Edward T. Dressler, Richard I. Billmers, Elizabeth J. Billmers, and Mary E. Ludwig "FireLidar development: light scattering from wood smoke experiments and theory at 1574 nm", Proc. SPIE 6294, Infrared and Photoelectronic Imagers and Detector Devices II, 62940I (7 September 2006); https://doi.org/10.1117/12.679265

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KEYWORDS

LIDAR

Pulsed laser operation

Mirrors

Imaging systems

Sensors

Signal detection

Backscatter

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