VLF radio wave propagation

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。

Study on Antenna Equipment for Communication of Very low frequency (VLF) Electromagnetic Wave Propagation through Earth

甚低频电磁波穿透地层无线通信系统天线装置的研究

airborne proton magnetometer

航空甚低频电磁系统

emissions of light and very low frequency perturbations due to electromagnetic pulse sources

因电磁脉冲源引起的光辐射和甚低频微扰

APPLICATION OF CORRELATION DETECTION TO ELF SIGNAL DETECTION

相关检测在甚低频电磁信号检测中的应用

COMPUTATION OF VLF ELECTROMAGNETIC ANOMALIES BY BEM IN COMPLEX CONDITION

用边界元法求解复杂条件下甚低频法电磁异常

Research on Low-frequency Sine Waveform Exciting Mode for Electromagnetic Flowmeter;

电磁流量计低频正弦波励磁方法的研究

Research on Low-frequency Three-value Trapezoidal Waveform Exciting Mode for Electromagnetic Flowmeter;

电磁流量计低频三值梯形波励磁方法的研究

Radio wave: Wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves.

无线电波:电磁波谱中比红外辐射频率更低的电波部分。

very high frequency radio-telephone channel

甚高频无线电话波道

Filtering of Ultra-Low Electromagnetic Detection Signal Using Independent Component Analysis

基于独立成分分析的超低频电磁探测信号滤波

Localization technique of pipeline detecting based on extremely low frequency electromagnetic wave

基于极低频电磁波的管道检测定位技术

Development and Application of Extremely Low Frequency Multi-waveform Electromagnetic Field Generator

极低频多波形电磁场发生仪的研制与应用研究

Application of the Very Low Frequency Electromagnetic Method to the Cuoba Active Fault in Queershan,Sichuan Province

甚低频电磁法在四川雀儿山错坝活动断裂研究中的应用

Loss of phase period is an improtant phenomenon of radiowave propagation, especially, the propagation of LF and VLF radiowaves.

相位周期丢失是电波传播中的一个重要传播现象,特别是对于低频和甚低频传播。

the entire frequency range of electromagnetic waves.

电磁波的全部频率范围。

VLF Field Strength Calculation Methods Based on Waveguide Mode

基于波导模式的甚低频场强计算方法

ARTIFICIAL SLF METHOD AND THE EXPERIMENTAL STUDY FOR EARTHQUAKE MONITORING IN BEIJING AREA

人工源超低频电磁波技术及在首都圈地区的测量研究

Research on Localization Technique of Pipeline Robot Based on Ultra Low Frequency Electromagnetic Wave;

基于超低频电磁波的管道机器人示踪定位技术研究