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为掌握舰船外加电流阴极保护系统滤波不良引起的工频电场在浅海环境中的分布特征,采用三层媒质中的水平时谐电流元对其进行建模,并仿真分析了其在水下的近场空间分布特征.设计了一个在实验室条件下的工频电场测试方案,通过实验进一步研究其特性,并将实测值与仿真结果进行对比分析.研究结果表明:可利用水平时谐电流元对工频及其倍频电场进行建模,且在近场条件下工频电场通过特性明显,强度在可探测范围内,有可能成为一种新的目标信号.
In order to grasp the distribution characteristics of power frequency electric field caused by unfavorable filtering of warship plus current cathodic protection system in shallow sea environment, the harmonic current elements in the three-layer medium are used to model them, and their underwater simulation The characteristics of near-field spatial distribution, a power frequency electric field test scheme under laboratory conditions is designed, the characteristics of the power frequency electric field are further studied through experiments, and the measured values and simulation results are compared and analyzed.The results show that: The power frequency and its frequency-doubled electric field are modeled. Under near field conditions, the passing characteristics of the electric frequency electric field are obvious and the intensity is within the detectable range, which may become a new target signal.