Abstract

Based on the coupling scattering mechanism between the ship and sea surface, a scattering signature modeling method of sea-surface target for bi-static imaging radar is proposed, considering the modulation effects of sea-surface forcing to ship targets. The bi-static scattering signature signal for sea-surface target is modeled, in conjunction with high frequency asymptotic techniques for electromagnetic (EM) scattering calculation, the multi-path EM scattering model, the time-evolving complex reflection coefficient model and the ship motion dynamics. The time-varying scattering signatures for a typical ship on time-evolving sea-surface are simulated and analyzed.

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