Low angle scattering from 2-D targets on a time-evolving sea surface

The results of a numerical investigation of the electromagnetic scattering from two-dimensional (2-D) targets on a time-evolving sea surface are presented. The 2-D radar cross section (RCS), or "echo width," is computed as a function of time as the sea surface evolves linearly using the sp...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2002-05, Vol.40 (5), p.1185-1190
Main Authors: Burkholder, R.J., Pino, M.R., Obelleiro, F.
Format: Article
Language:English
Subjects:
Acceleration
Applied geophysics
Earth sciences
Earth, ocean, space
Electromagnetic scattering
Exact sciences and technology
Internal geophysics
Marine
Marine geology
Radar cross section
Radar scattering
Rough surfaces
Sea surface
Space vector pulse width modulation
Surface roughness
Surface waves
Two dimensional displays
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Summary:The results of a numerical investigation of the electromagnetic scattering from two-dimensional (2-D) targets on a time-evolving sea surface are presented. The 2-D radar cross section (RCS), or "echo width," is computed as a function of time as the sea surface evolves linearly using the spectrally accelerated generalized forward-backward method. It is shown that the RCS varies with time on the order of seconds, which is much longer than the typical pulse width or pulse repetition rate of search radars. It is also observed that for low-grazing angles of incidence the primary sea surface influence on the RCS comes from the long waves in the ocean spectrum.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2002.1221954