Open AccessLidar signature from bubbles in the sea
Author(s) -
James H. Churnside
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.008294
Subject(s) - optics , bubble , lidar , materials science , scattering , backscatter (email) , attenuation coefficient , mie scattering , coating , void (composites) , light scattering , volume fraction , physics , mechanics , composite material , telecommunications , computer science , wireless
The lidar signature from a collection of bubbles is proportional to the volume backscatter coefficient at a scattering angle of 180 degrees . This quantity, calculated using a combination of geometric optics and diffraction, is proportional to the void fraction of the bubbles in the water for any bubble size distribution. The constant of proportionality is 233 m(-1) sr(-1)for clean bubbles, slightly less for bubbles coated with a thin layer of organic material, and as large as 1445 m(-1) sr(-1) for a thick coating of protein.