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浅海中船舶尾流产生的感应电磁场

DOI: 10.3969/j.issn.1006-7043.201306049

Keywords: 浅海, 船舶尾流, 感应电磁场, 麦克斯韦方程组, 水下特性, 远程水下探测, 电磁场信号

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Abstract:

为了完善船舶电磁场的特性研究,为船舶水下远程探测和特征信号控制提供参考,利用电磁场边界条件求解麦克斯韦方程组,得到了浅海中船舶尾流感应电磁场的数学模型,并对船舶尾流感应电磁场的特性进行了仿真分析。重点分析了尾流感应电磁场的水下特性,结果显示感应电磁场信号在水下具有良好的特性:长波长、低频率,持续时间长,距离越远幅值衰减速度越小,功率谱为线谱,可用于船舶的远程水下探测。海上实测船舶尾流感应电场数据与理论仿真对比表明,实测数据的量级、变化趋势和功率谱均与理论模型的计算结果一致,证明了理论模型的正确性。

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