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Second-order multiple-scattering theory associated with backscattering enhancement for a millimeter wavelength weather radar with a finite beam width

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dc.contributor.author Kobayashi, Satoru
dc.contributor.author Tanelli, Simone
dc.contributor.author Im, Eastwood
dc.date.accessioned 2006-05-04T18:05:07Z
dc.date.available 2006-05-04T18:05:07Z
dc.date.issued 2005-12-22
dc.identifier.citation Radio Science, Vol. 40, RS6015 en
dc.identifier.clearanceno 04-3654
dc.identifier.uri http://hdl.handle.net/2014/39221
dc.description.abstract Effects of multiple scattering on reflectivity are studied for millimeter wavelength weather radars. A time-independent vector theory, including up to second-order scattering, is derived for a single layer of hydrometeors of a uniform density and a uniform diameter. In this theory, spherical waves with a Gaussian antenna pattern are used to calculate ladder and cross terms in the analytical scattering theory. The former terms represent the conventional multiple scattering, while the latter terms cause backscattering enhancement in both the copolarized and cross-polarized components. As the optical thickness of the hydrometeor layer increases, the differences from the conventional plane wave theory become more significant, and essentially, the reflectivity of multiple scattering depends on the ratio of mean free path to radar footprint radius. These results must be taken into account when analyzing radar reflectivity for use in remote sensing. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 482431 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher American Geophysical Union en
dc.subject multiple scattering en
dc.subject radar reflectivity en
dc.title Second-order multiple-scattering theory associated with backscattering enhancement for a millimeter wavelength weather radar with a finite beam width en
dc.type Article en


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