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pilot frequency carrier wave 导频载波
high frequency carrier wave channel 高频载波通道
Design and implement of the host computer software in power-line high frequency carrier wave channels test device 电力线高频载波通道测试装置上位机软件设计与实现
VFT? Voice Frequency carrier telegraph Terminal? 音频载波电报终端?
high frequency carrier wave 高频载波
In communications, the frequency range of the information bearing signals prior to combination with carrier wave by modulation. 在通信技术中,未经调制使之和载波结合之前,携带信息的信号所占有的频率范围。
To extract(information) from a modulated carrier wave. 解调（信号等）从调制过的载波中分离出（信息）
The carrier wave has got out of phase with the signal wave. 载波同信号波是异相的。
As each spacecraft orbits the Earth it emits a carrier wave. 每一个航天器绕地球轨道运转的时候，它会发射一种载波。
These narrowband services, which avoid interfering with one another by staying within the confines of their allocated frequency bands, use what is called a carrier wave. 这些窄频服务使用所谓的载波，而且会保持在分配到的频带范围内，以避免彼此干扰。
The remaining factor in(7, 8.3)is the carrier wave and its phase velocity is c. （7; 8.;3）中剩下来的一个因子就是载波，其相速度是c。
The power of the modulated carrier wave is increased by the RF power amplifier. 射频功率放大器增加了调变载波的功率。
These high frequency carrier signals can be transmitted over the air easily and are capable of traveling long distances. 这些高频载波信号的传输距离可以超过空气容易,并有能力行长途跋涉。
In an AM transmission the carrier wave is constant in frequency and varies in amplitude (strength) according to the sounds present at the microphone; in FM the carrier is constant in amplitude and varies in frequency. 在调幅的传播中，其负载电波频率是恒定的，但波幅(力度)随着麦克风声音变化而变化；在调频的传播中，其负载电波波幅是恒定的，而频率随着麦克风声音的变化而变化。
But to the CW pulse signal with changing carrier wave frequency, common filter cannot achieve narrowband filter, whereas broadband filter cannot reach the request of the signal-noise ratio. 可是,对于载波频率不断变化的CW脉冲信号,普通的滤波器难以实现窄带跟踪滤波,而宽带滤波又不能达到提高信噪比的要求。
The process of retrieving intelligence(data) from a modulated carrier wave; the reverse of modulation. 从调制过的载波信号中检出信息（数据）的过程，是调制的逆过程。
pilot frequency demodulation circuit 导频解调电路
honeycomb pilot frequency distribution 梳状导频分布
The process of retrieving intelligence ( data ) from a modulated carrier wave ; the reverse of modulation. 从调制过的载波信号中检出信息(数据)的过程,是调制的逆过程。
pilot frequency allocation module 导频分配模块

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