舰船电磁特征信号及其控制

Electromagnetic Signature and its Control of Ships

由于金属腐蚀、阴极保护系统、螺旋桨的转动以及船上电子设备等原因,舰船上存在着多种电磁特征信号,如静电、静磁、交流电磁场、超低频电磁特征信号。概述了电磁特征信号的来源、危害,介绍了轴接地、阴极保护系统的设计和滤波、消磁等消除或减少电磁特征信号的技术措施。

Because of corrosion of metals, cathodic protection systems, rotation of shaft and electronic equipment on board, there were many kinds of electromagnetic signatures such as static electric, magnetostatic, alternating electromagnetic field and extra low frequency electromagnetic signature on ships. The source and hamffulness of electromagnetic signature were reviewed. The measures to eliminate and mitigate the electromagnetic signature such as shaft grounding, design of cathodic protection system and degaussing were introduced.