摘要
研究了海水中超低频拖曳磁场接收天线机械振动在地磁场中产生磁致伸缩噪声的机理,导出了计算磁场拖曳天线磁致伸缩噪声功率谱的理论公式,分析了天线灵敏度、电缆特性、地磁场等因素对磁致伸缩噪声的影响,并总结了降低磁场天线磁致伸缩噪声的四种有效方法。
The generation of magnetostrictive noise by mechanical vibration of an underwater super low frequency towed magnetic receive antenna in the geomagnetic field is studied, and theoretical formulas to predict the power spectrum of the magnetostrictive noise for the submarine towed magnetic field antenna are derived. The research identifies the roles played by the various contributing factors such as antenna sensitivity profile, cable properties, geomagnetic field, etc. Four methods of effectively reducing the magnetostrietire noise are devised.
出处
《微计算机信息》
北大核心
2008年第16期292-293,共2页
Control & Automation
基金
国家自然科学基金资助项目(60202005)
关键词
潜艇通信
超低频
拖曳磁场天线
磁致伸缩噪声
submarine communication
super low frequency（SLF）
towed magnetic field antenna
motion-induced noise
