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This paper is concerned with an analysis of the back scattering of an electromagnetic wave by a target moving along just above a random rough surface such as desert, hilly terrain, sea surface and so on. First we introduce the discrete ray tracing method (DRTM) for the field analysis of back scattering. Second we investigate the effect of clutter due to back scattering from the random rough surface...
The SeaWinds scatterometer was originally designed to measure wind vectors over the ocean by exploiting the relationship between wind-induced surface roughening and the normalized radar backscatter cross section. Rain can degrade scatterometer wind estimation; however, the simultaneous wind/rain (SWR) algorithm was developed to enable SeaWinds to simultaneously retrieve wind and rain rate data. This...
The effects of rain on SeaWinds data are investigated using one year of SeaWinds /spl sigma//sub 0/ data, SSM/I and TMI rain rates collocated within 5 minutes of the SeaWinds observation, and tri-linearly interpolated ECMWF 10-m wind analyses. Attenuation and volumetric backscattering are parameterized in terms of rain rate, and the modification of the surface radar cross-section by rain roughening...
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