窄船尾流合成孔径雷达图像的耦合模拟

Min Zhang, Le-tian Wang
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引用次数: 1

摘要

采用耦合仿真的方法,对不同尾迹模式下的合成孔径雷达(SAR)图像进行了仿真。采用计算流体力学(CFD)方法模拟了与传统开尔文尾迹有一定区别的船舶远尾迹流场。讨论了船舶不同弗劳德数时尾迹的不同模态。分别基于面散射模型和SAR聚束成像模型考虑尾迹的调制效应。仿真结果表明,耦合仿真更为灵活合理,可广泛用于舰船尾迹SAR图像的多物理场问题的解释和建模。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Coupled Simulation of Synthetic Aperture Radar Image of the Narrow Ship Wake
A coupled simulation is implemented to simulate the synthetic aperture radar (SAR) image of the different patterns of the ship wakes. The computational fluid dynamic (CFD) method is utilized to simulate the flow fields of the ship far wakes, which are a little different from the traditional Kelvin wake with a fixed spreading angle. The different modes of the wakes with different Froude numbers of the ships are discussed. The modulation effects of the wakes are considered based on a faceted scattering model and SAR bunching imaging model, respectively. The simulation results shows that the coupled simulation, which is more flexible and reasonable, can be widely used to explain and model the multi-physics issues about the SAR image of ship wakes.
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