Airborne Three-Dimensional Cloud Tomography

author: Aviad Levis, Department of Electrical Engineering, Technion - Israel Institute of Technology
published: Feb. 10, 2016,   recorded: December 2015,   views: 1625
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Description

We seek to sense the three dimensional (3D) volumetric distribution of scatterers in a heterogenous medium. An important case study for such a medium is the atmosphere. Atmospheric contents and their role in Earth’s radiation balance have significant uncertainties with regards to scattering components: aerosols and clouds. Clouds, made of water droplets, also lead to local effects as precipitation and shadows. Our sensing approach is computational tomography using passive multiangular imagery. For light-matter interaction that accounts for multiple-scattering, we use the 3D radiative transfer equation as a forward model. Volumetric recovery by inverting this model suffers from a computational bottleneck on large scales, which include many unknowns. Steps taken make this tomography tractable, without approximating the scattering order or angle range.

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Reviews and comments:

Comment1 Dana Peer, March 17, 2016 at 9:13 a.m.:

A very interesting talk indeed and what a great speaker. I would be interested in discussing with Aviad how this theory may be applied to the medical field.

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