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Some new lidar equations for laser pulses scattered back from optically thick media such as clouds, dense aerosol plumes, sea ice, snow, and turbid coastal waters

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dc.contributor.author Davis, Anthony B.
dc.date.accessioned 2014-03-11T22:53:32Z
dc.date.available 2014-03-11T22:53:32Z
dc.date.issued 2013-08-25
dc.identifier.citation SPIE Optics and Photonics, San Diego, California, August 25-29, 2013 en_US
dc.identifier.clearanceno CL#13-4049
dc.identifier.uri http://hdl.handle.net/2014/44423
dc.description.abstract I survey the theoretical foundations of the slowly-but-surely emerging field of multiple scattering lidar, which has already found applications in atmospheric and cryospheric optics that I also discuss. In multiple scattering lidar, returned pulses are stretched far beyond recognition, and there is no longer a one-to-one connection between range and return-trip timing. Moreover, one can exploit the radial profile of the diffuse radiance field excited by the laser source that, by its very nature, is highly concentrated in space and collimated in direction. One needs, however, a new class of lidar equations to explore this new phenomenology. A very useful set is derived from radiative diffusion theory, which is found at the opposite asymptotic limit of radiative transfer theory than the conventional (single-scattering) limit used to derive the standard lidar equation. In particular, one can use it to show that, even if the simple time-of-flight-to-range connection is irretrievably lost, multiply-scattered lidar light can be used to restore a unique profiling capability with coarser resolution but much deeper penetration into a wide variety of optical thick media in nature. Several new applications are proposed, including a laser bathymetry technique that should work for highly turbid coastal waters. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.subject pulse stretching en_US
dc.subject multiple scattering en_US
dc.subject Green functions en_US
dc.subject clouds en_US
dc.subject aerosol plumes en_US
dc.subject sea ice en_US
dc.subject snow en_US
dc.subject laser bathymetry en_US
dc.subject turbid water en_US
dc.title Some new lidar equations for laser pulses scattered back from optically thick media such as clouds, dense aerosol plumes, sea ice, snow, and turbid coastal waters en_US
dc.type Preprint en_US


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