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- 2018
半空间环境下跨界金属目标电磁散射快速分析研究
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Abstract:
通过对半空间分界面进行截断，半空间环境下目标的散射问题可以等效为自由空间中目标与背景构成的复合介质体的散射问题。不同于传统的半空间散射问题分析方法，该文使用自由空间格林函数，从而避免复杂耗时的半空间格林函数的计算，特别是当目标靠近或横跨分界面时。根据自由空间格林函数的特性，该方法可以有效地利用多层快速多级子方法进行加速处理，不仅解决了传统的半空间问题中缺乏有效的快速方法的问题，而且改善了由截断半空间分界面而引入的额外未知量问题。通过对跨界舰船的数值分析，验证了该方法的准确性和有效性。另外，从能量守恒的角度出发，提出了透射深度的概念，为跨界目标处于下半空间部分的截断问题提供了依据。
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