1) lowfrequency magnetic communication
低频磁通信
3) VLF/LF conmunication
甚低频/低频通信
5) ELF communication
超低频通信
1.
This paper deals with anti-jamming performance of extremely low frequency(ELF) communications for military purposes after analyzing the advantages of ELF communication systems and modern jamming models for communication.
在分析和研究外军超低频通信系统基础上,针对超低频通信系统性能特点,结合现代无线通信干扰基本模式,分析了超低频通信系统优良的抗干扰性能。
2.
The different signal directional distributions and frequency spectrum characteristics of electromagnetic noises due to many factors and their influence on submarine ELF communications are also studied.
对潜超低频通信信号的接收会受到很强噪声的干扰。
6) ultra-low frequency electromagnetic signal
超低频电磁信号
补充资料：低频
1.指应用于某一技术领域中的最低频率范围。例如，无线电波段中，将30～300千赫范围内的频率称低频;电子放大电路中，将接近音频(20赫兹～2万赫兹)的频率称为低频。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条