摘要
为了研究舰船的磁性目标特征,基于弱磁环境下铁磁质的线性磁化规律,利用国际地磁参考场模型,研究了不同磁航向情况下舰船磁异常信号的分布。仿真分析表明,在地磁坐标系中,舰船南侧的磁异常信号为正,北侧为负;随着舰船磁航向的变化,磁异常信号等值线的形状略有变化,取向和范围有较大变化;为了减弱磁异常信号,舰船应沿磁东、磁西方向航行,为了提高探测能力,应沿磁南、磁北方向搜索。
Induced magnetism which can not be eliminated by deperming is the important part of ship magnetism characteristic target. According to the law of linear ferromagnetic magnetization in the earth＇ s magnetic field which is very weak,the ship MAD signal distribution is studied by IGRF- 11 mode. Study shows,in the geomagnetism coordinate,ship MAD signal is positive at south and negative at north;isoclines shape of MAD signal change little but orientation and range change obviously when sail at different magnetic course; ship should sail at magnetic east or west to reduce MAD signal,but detection platform should search at magnetic south or north to increase detection ability.
出处
《舰船科学技术》
北大核心
2015年第9期137-139,共3页
Ship Science and Technology
基金
国防基础科研计划资助项目(B212032005)
关键词
舰船
感应磁性
磁异常信号
磁航向
ship
induced magnetism
MAD signal
magnetic course
