| 引用本文: | 邵学辉，冯杨楠，薛 冰，王 伟，刘 鹰. 融合海洋环境要素的多尺度海面电磁散射建模[J]. 雷达科学与技术, 2026, 24(1): 42-51.[点击复制] |
| SHAO Xuehui, FENG Yangnan, XUE Bing, WANG Wei, LIU Ying. Multi⁃Scale Sea Surface Electromagnetic Scattering Modeling IntegratingMarine Environmental Elements[J]. Radar Science and Technology, 2026, 24(1): 42-51.[点击复制] |
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| 摘要: |
| 为解决经典双尺度模型忽略真实海洋环境要素、对截断波数敏感而导致海杂波仿真精度不足的问题，本文提出一种融合真实海洋环境要素的多尺度电磁散射建模方法。该方法利用实测波高、波向与风场数据生成重力波，并结合Elfouhaily海谱生成张力波，按照斜率通过线性叠加法构建多尺度几何海面；进而，采用一种含自适应截断波数的积分方程?基尔霍夫近似混合方法（Integral Equation Method?Kirchhoff Approximation，IEM?KA）计算其电磁散射特性。将该方法在多波段、多海况及不同擦地角条件下，以NRL模型、KaDPMod模型及Ka波段实测数据作为基准，与传统JONSWAP?TSM组合方法进行对比验证。结果表明，与传统方法相比，新方法在1~6级海况下的后向散射强度预测精度显著提升，在不同雷达擦地角下均表现出良好适用性，且模拟结果与实测数据高度吻合。本文所提方法有效克服了传统模型对海洋环境要素依赖不足的缺陷，为获取高保真、全要素的海杂波模拟数据提供了可靠的技术途径。 |
| 关键词: 真实海洋环境要素 几何海面 电磁散射计算 双尺度方法 |
| DOI：DOI:10.3969/j.issn.1672-2337.2026.01.005 |
| 分类号:TN011 |
| 基金项目:国家自然科学基金（62271163） |
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| Multi⁃Scale Sea Surface Electromagnetic Scattering Modeling IntegratingMarine Environmental Elements |
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SHAO Xuehui, FENG Yangnan, XUE Bing, WANG Wei, LIU Ying
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College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China
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| Abstract: |
| To address the problem that the classic two?scale method neglects real marine environmental parameters and is sensitive to the cutoff wavenumber, leading to insufficient accuracy in sea clutter simulation, a multi?scale electromagnetic scattering modeling method that incorporates real marine environmental parameters is proposed in this paper. The method utilizes the measured data of wave height, wave direction, and wind field to generate gravity waves and combines them with capillary waves generated from the Elfouhaily spectrum, constructing a multi?scale geometric sea surface via slope?based linear superposition method. Subsequently, the hybrid integral equation method?Kirchhoff approximation (IEM?KA) with adaptive cutoff wavenumber is employed to calculate its electromagnetic scattering characteristics. The proposed method is validated by comparing it with the traditional JONSWAP?TSM combined method, using the NRL model, the KaDPMod model, and measured Ka?band data as benchmarks under various bands, sea states, and grazing angles. Results demonstrate that, compared to the traditional method, the new approach significantly improves the prediction accuracy of backscattering strength under the sea states of 1~6, exhibits excellent applicability at different grazing angles, and its simulation results are in high agreement with the measured data. The proposed method effectively overcomes the deficiency of traditional models’ insufficient reliance on marine environmental parameters, providing a reliable technical pathway for obtaining high?fidelity and full?factor sea clutter simulation data. |
| Key words: real marine environmental parameters geometric sea surface electromagnetic scattering calculation two⁃scale method (TSM) |
