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In the paper, the electromagnetic scattering (EM) from a one-dimensional (1-D) perfectly electric conducting (PEC) randomly rough sea surface with large windspeed is investigated by the iterative physical optics (IPO) algorithm. In this method the multiple coupling interactions among points on sea surface are considered. To improve computational efficiency, the local coupling technique is adopted to accelerate the iterative process. In numerical results, the EM scattering by 1-D sea surface for different polarizations is calculated and compared with that by the conventional method of moments (MOM), as well as the computing time and memory requirements. In addition, the influence of some parameters on the scattering of sea surface are investigated and discussed in detail, such as the threshold of coupling distance, iteration numbers, and windspeed.

ELECTROMAGNETIC SCATTERING FROM 1-D SEA SURFACE WITH LARGE WINDSPEED BY USING ITERATIVE PHYSICAL OPTICS ALGORITHM