...频率选取;噪声干扰 [gap=334]eywords : wireless communication in mine/underground; very low frequency (VLF) ; frequency selection ; noise; ...
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Dynamic Frequency Selection 动态频率选择
frequency selection network 选频网络
frequency selection circuit 选频电路
Stepless Frequency Selection 频率调整 ; 增频选项 ; 无段超频频率调整 ; 无级频率控制
frequency-selection characteristic 选频特性
This structure use double 980nm laser diodes as its pump sources. Narrow line width laser is obtained by using fiber Bragg grating F-P frequency selection and feedback modulation method.
该结构采用980nm半导体激光器双向泵浦,利用光纤光栅法布罩.珀罗腔选频和反馈调节相结合的方法,获得窄线宽激光输出。
参考来源 - 谐振式光纤陀螺仪及窄线宽光纤激光器研究Experimental results are agreeing with the theoretical calculations. It provides an effective way in the frequency selection of non-intervention ultrasonic liquid level detection.
实验结果与理论计算一致,由此为非介入式超声液位检测的频率选择提供了一条有效途径。
参考来源 - 超声液位检测频率选择的理论计算和实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The core part of the circuit is differential and frequency selection.
电路核心部分由微分电路和选频电路组成。
One of the crucial techniques in burst communication is adaptive frequency selection.
在这种通信任式中，一个关键技术是自适应选频技术。
The generator of adaptive FH pattern is designed. By using it and the result of the LQA, adaptive frequency selection is accomplished.
设计了自适应跳频图案发生器，利用信道质量评估结果，完成了自适应频率选择。
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