The VLF character for the fault zone was discussed. It is pointed that the effectiveness and limitation of searching blind fault with VLF method.
本文分析了该构造的VLF响应特点,指出在本区用VLF方法寻找隐伏构造的有效性和局限性。
It could overcome the transmission interference, and could be the fore part of the VLF digitized receiver.
此方案可有效解决甚低频信号传输中的干扰问题,并为下一步的甚低频信号数字处理提供了基础。
The propagation characteristic of the VLF in the earth-ionosphere waveguide is analyzed by applying the FDTD method.
应用时域有限差分(FDTD)方法分析甚低频在地电离层波导中的传播特性。
Abstract: the VLF Through-the-Earth Communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media.
文摘:由于大地信道稳定,低频透地通信被认为是最可靠的救急通信方式。
By analyzing transmission pathway and mode of VLF radio wave, calculation formula of field intensity is given.
分析甚低频电磁波传播路径与方式,给出场强的计算公式。
The signal will have attenuation and disturbance due to environmental factors in the process of VLF radio wave propagation, which will impact the reliability of submarine communication.
甚低频(VLF)电波传播过程中因环境因素影响会使信号产生衰减与扰动,导致潜艇收信可靠性下降。
During the First Chinese National Antarctic Research Expedition, whistler and VLF emission observations were carried out for 37 days.
在中国首次南极考察期间,我们对哨声和VLF发射进行了37天的连续观测。
The significance of VLF increase remains to be observed.
VLF升高的意义有待深入研究。
The VLF signals travel by waves that hug the ground rather than radiating into the atmosphere.
VLF信号通过紧贴地面而不是辐射到大气中的波来传输。
By using two kinds of model of ducts in which the VLF electromagnetic waves are guided, we obtain the distributions of magnetic field and current in the whistler duets.