高频通道,high-frequency channel
1)high-frequency channel高频通道
1.Strategy and improvement of dealing with interference inhigh-frequency channel;高频通道干扰的应对策略和改进
2.This paper, taking a 220 kV Zhaodian substation as an example, analyzes the changeover ofhigh-frequency channel in this substituting operation.本文以赵店站220kV线路转代操作为例,分析了220kV线路转代操作中高频通道的切换方法。
3.The reliability ofhigh-frequency channel plays a decisive role in correct operation of carrier current protection.高频通道的可靠性对高频保护的正确动作起决定作用。
英文短句/例句
1.The Character and Testing Method of High Frequency Channel Trapper;高频通道阻波器的特性分析与检测方法研究
2.Inspection and processing of several HF channel typical faults for 220 kV line几起220kV线路高频通道典型故障的检查与处理
3.Using the new tri-coaxial-cable as connecting cable in high frequency protection channel to improve the anti-jamming ability of high frequency protection was suggested.提出了用新型三同轴电缆作高频通道连接电缆可提高高频保护抗干扰能力的建议。
4.The Electrical Character Calculation and Analysis of High Frequency Transmission Performance for Insulated Overhead Grounding Wires of EHV Transmission Lines超高压绝缘架空地线高频通道的电气特性计算及高频传输特性分析
5.Design of Multi-Channel Multi-Frequency HF Ground Wave Radar DDS Digital Signal Generator多通道多频高频地波雷达DDS数字信号源的设计
6.Study on Carrier Protection Channel for 330 kV Lines330 kV线路高频保护通道问题的研究
7.A tunable RF excited waveguide CO_2 laser with dual-channel,high synchronism and co-electrode双通道共电极双波长高同步射频波导CO_2激光器
8.Multi-channel High-speed Information Transmission Technology Based on SC-FDE多通道单载波频域均衡高速信息传输技术
9.Improved channel compensation method for maneuvering target detection in OTH radar改进的通道补偿法检测高频雷达机动目标
10.Self-Calibration of Channel Errors for Bistatic HF Surface Wave SIAR双基地高频地波SIAR通道幅相误差的自校准方法
11.Realize Data Communication and Frequency Monitorsubsystem of Software High-Frequency Radardigital Signal Process System;软件高频雷达信号处理的通信控制与频监信道的实现
12.Bandwidth: The difference (in hertz) between the upper and lower limits of wave frequencies transmitted over a communications channel.波段阔度:在一个通信通道中，最高和最低波频率（单位是赫兹）的差别。
13.receiver channel RF bandwidth接收机射频通道带宽
14.double-channel digital low-frequency spectrum analyzer双通道数字式低频频谱分析仪
15.High definition component video signals contain sync on each channel.高分辨率的分量视频信号在其每一个通道中都包含了同步信息！
16.A High-Speed Fibre Channel Switch Based on Token Frequency Reduction基于信令降频方法的高速光纤通道交换机的研究与设计
17.maximum data rate-to-bandwidth ratio最高信道频带利用率
18.very high frequency radio-telephone channel甚高频无线电话波道
相关短句/例句
HF channel高频通道
1.Influence of isolated switchgear switching onHF channel;隔离开关投切旁路母线对高频通道的影响
2.Analysis and improvement on DC wave recording inHF channel;高频通道直流录波的分析及改进
3.Inspection and processing of severalHF channel typical faults for 220 kV line几起220kV线路高频通道典型故障的检查与处理
3)high frequency channel高频通道
1.As the important constituent inhigh frequency channel,high frequency trapper in service lacks of test and maintenance,as the result that wave trapper becomes a critical factor effecting on quality ofhigh frequency channel.高频通道作为高频保护信号的传输通道,它能否正常地工作对于电网的安全可靠运行起着非常重要的作用。
2.The paper proposed an unusual kind of means to searching and handling the faults of line coupling filters,a type ofhigh frequency channel components,which is practical and quick.主要针对高频保护中的高频通道元件结合滤波器的故障判别和处理提出非传统的新方法。
4)ultrahigh frequency channel超高频通道
5)high frequency carrier wave channel高频载波通道
1.Design and implement of the host computer software in power-linehigh 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
6)carrier protection channel高频保护通道
1.Study on the fault detecting incarrier protection channel;高频保护通道故障监测方法的研究
延伸阅读
甚高频和超高频多普勒雷达工作在30～3000兆赫频段的气象多普勒雷达。一般具有很高的探测灵敏度。因探测高度范围可达1～100公里，所以又称为中层-平流层-对流层雷达 (MST radar)。它主要用于探测晴空大气的风、大气湍流和大气稳定度（见大气静力稳定度）等大气动力学参数的铅直分布。原理 这类雷达通过以下几类电磁波和大气的相互作用,对晴空大气进行探测:①由大气湍流运动引起的折射率不均匀结构对电磁波的散射；②稳定大气分层结构对入射电磁波的部分反射；③有时出现于中层大气的自由电子对电磁波的散射；④中层大气中的流星余迹散射。散射体积内空气的运动，使雷达回波具有多普勒频偏。结构 MST 雷达的结构和气象多普勒雷达大致相同。其特点在于：它们一般配备了大型天线（天线阵），有些甚高频段雷达的天线阵，尺度达 30～200米，采用半波振子阵或八木天线振子阵，以相控方式实现波束扫描。超高频段雷达采用直径几十米的可动抛物面天线，这类雷达的发射功率在几百千瓦至 2兆瓦之间，发射功率和天线面积的乘积值在106～1010瓦·米2之间。此外，为获得高灵敏度和高空间分辨率，在脉冲发射体制和回波数据处理方面，也采取一些技术措施。用途 利用回波的多普勒频谱可以进行下述各项测量：①探测大气风场的铅直分布。同一仰角，空间分辨率约为 150～1000米，采用脉冲压缩技术后，分辨率已可达到15米。②探测大气湍流结构。可以给出平均折射率湍流结构常数(C厒)的铅直分布。再引入一些大气湍流模式后，可以推算出湍流耗散率的铅直分布。③探测对流层顶高度及逆温层的高度和厚度。目前，甚高频和超高频多普勒雷达还只能测定上述气象要素的铅直廓线及其时间变化，而不能给出三维空间分布资料。参考书目K.S.Gage，B.B.Balsley,Doppler Radar Probing of the Clear Atmosphere,Bulletin of American MeteorologicalSociety,Vol.59，No.9，pp.1074～1093，1978.
