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      Analysis of the Scattering Characteristics of Sea Surface with the Influence from Internal Wave

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          Abstract

          The internal wave travels beneath the sea surface and modulate the roughness of the sea surface through the wave-current interaction. This makes some dark and bright bands can be observed in the Synthetic Aperture Radar (SAR) images. In this paper, we first establish the profile of the internal wave based on the KdV equations; then, the action balance equation and the wave-current interaction source function are used to modify the sea spectrum; finally, the two-scale theory based facet model is combined with the modified sea spectrum to calculate the scattering characteristics of the sea. We have simulated the scattering coefficient distribution of the sea with an internal wave traveling through. The influence on the scattering coefficients and the Doppler spectra under different internal wave parameters and sea state parameters are analyzed.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 June 2015
          : 4
          : 3
          : 326-333
          Affiliations
          [1 ] State Key Laboratory of Integrated Services Networks, Xidian University
          [2 ] National Electromagnetic Scattering Laboratory
          Article
          08ec5088c23641f586f52d94966c3d62
          10.12000/JR15060

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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