助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   phased receiving array 的翻译结果: 查询用时:0.008秒
图标索引 在分类学科中查询
所有学科
自动化技术
更多类别查询

图标索引 历史查询
 

phased receiving array
相关语句
  相似匹配句对
     3. Measure and receiving system of phased array transducer.
     3.相控阵换能器的测量接收系统。
短句来源
     Phased beam receiving scheme for phased Doppler log
     相控阵多普勒计程仪的相控波束接收方案
短句来源
     Receiving Systems
     接收系统
短句来源
     Noise Temperature Measurements of Active Phased Array Receiving System
     有源相控阵接收系统的噪声测试
短句来源
     Phased Ultrasonic Receiving Array Sensor for Partial Discharge Location in Oil
     用于油中局部放电定位的超声相控接收阵传感器的研究
短句来源
查询“phased receiving array”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


According to the physical characteristics of PIN diode and the need of T/R co located HF ground wave radar, a T/R switch circuit was developed for the phased array of OSMAR2000 HF ground wave radar. The phased array is thus realized transmitting and receiving bi functional, and by doing so the array area occupation and investment on the radar is both considerably reduced. The wide band T/R switch operates under the control of double time duration and bi polar pulses, which lead to a simple, high efficient...

According to the physical characteristics of PIN diode and the need of T/R co located HF ground wave radar, a T/R switch circuit was developed for the phased array of OSMAR2000 HF ground wave radar. The phased array is thus realized transmitting and receiving bi functional, and by doing so the array area occupation and investment on the radar is both considerably reduced. The wide band T/R switch operates under the control of double time duration and bi polar pulses, which lead to a simple, high efficient circuitry and well shaped waveform. The switch's stabilization and credibility has been observed in the radar's operation. Phased array antenna are widely applied in mid and long range HF ground wave radar (HFGWR) systems which are used to sense sea state remotely. To achieve high sensitivity and precision, array aperture normally reaches as large as several hundred or several thousand meters. For example, the Canadian HF GWR system located at Newfoundland has a 880 m phased receiving array containing 40 monopoles, and a 40 m high log periodical transmitting antenna. It is by far not easy to find a suitable seaside site for such kind system. Reducing array size is critical in the practical application of HFGWR. Co using the same antenna both as transmitting and receiving antenna is an effective means to reduce array size. The technique has been applied in the OSMAR2000 HFGWR system developped under the 818 01 02 key project in the national 863 plans. OSMAR2000 has realized real time surveillence of surface currents, waveheight and wind field out to 200 km. Gated pulses control the role shifting of an antenna between transmitting and receiving, where it is linked reliably to the transmitter and isolated from the receiver during transmitting period, then linked to the receiver and isolated from the transmitter during receiving period. The T/R switch is a key component in OSMAR2000.

根据共站高频雷达的工作原理和 PIN二极管的物理特性 ,研制了应用于高频地波雷达 OSMAR2 0 0 0的收发开关电路 ,实现一付相控阵天线收发共用 ,大大减少占地面积和投资 .这种具有宽带特性的收发开关采用双时宽双极性脉冲控制 ,电路简洁 ,效率高 ,脉冲波形好 ,工作稳定可靠

A new partial discharge(PD)location method based on UHF and ultrasonic phased array receiving theory is presented. The plane sensor is consisted of two phased receiving arrays, which respectively receive UHF and ultrasonic signals emitted by partial discharge. Regarding the time point of signal detected by the UHF phased receiving array as time benchmark, the time delay of ultrasonic signals received by acoustic phased receiving array can be obtained and the distance...

A new partial discharge(PD)location method based on UHF and ultrasonic phased array receiving theory is presented. The plane sensor is consisted of two phased receiving arrays, which respectively receive UHF and ultrasonic signals emitted by partial discharge. Regarding the time point of signal detected by the UHF phased receiving array as time benchmark, the time delay of ultrasonic signals received by acoustic phased receiving array can be obtained and the distance between PD source and the sensor can be calculated, then the PD dimensional position can be found out using the azimuth and elevation angle at which the phased receiving arrays scan. Because PD sources of different space positions lead to different space angles of beam combination representing corresponding maximum PD signal, and to different time benchmark compared to the same sampling initial point and different time delay, the locating of multiple PD sources can be reached. Several examples of PD in oil are simulated using this novel location method and the results indicate the method can locate the PD in oil and solve the location of multiple PD sources.

提出一种基于超高频和超声波相控接收阵的局部放电定位法。该方法以分别检测局部放电产生的超高频和超声波信号的相控接收阵构成平面传感器,以超高频相控接收阵检测到的局部放电超高频电磁波信号作为时间基准,由此得出接收到的超声波信号的时延,进而计算出放电点与传感器间的距离;再根据相控阵扫描的方位角和仰角,与算出的距离一起就可得出局部放电源的几何位置。多个空间位置不同的局部放电,其产生的最大信号所处的对应于空间角度的波束阵列的位置不同,相对于同一采样起始点的时间基准不同,而且时间间隔也不同,因此还可实现多局放源的定位。对这一设想进行仿真研究,结果表明该方法能对油中局部放电进行较精确的定位,并可较好地解决多局放点定位问题。

According to the partial discharge location method based on UHF and ultrasonic phased receiving arrays theory proposed by the authors, a phased receiving ultrasonic planar array sensor which possesses 16×16 elements is designed. With the aid of the phased array theory, the characteristics of the plane sensor are studied. The performance of each element measured in the laboratory is perfect within the frequency bandwidth of ultrasonic that can be received from PD in transformer...

According to the partial discharge location method based on UHF and ultrasonic phased receiving arrays theory proposed by the authors, a phased receiving ultrasonic planar array sensor which possesses 16×16 elements is designed. With the aid of the phased array theory, the characteristics of the plane sensor are studied. The performance of each element measured in the laboratory is perfect within the frequency bandwidth of ultrasonic that can be received from PD in transformer oil. Location tests are conducted where one or two synchronous emitting piezoelectric ultrasonic sources in oil are simulated as PD sources. The results show that the locations are precise using this phased ultrasonic receiving array sensor, the system error is less than 2% near the positive normal, and multiple locations can be determined in one measurement.

基于超高频和超声波相控接收阵的局部放电定位法,研制了16×16阵元的相控超声波接收平面阵传感器.使用相控阵理论对该传感器的特性进行了理论分析,模拟实验表明,在变压器中能接收到局部放电产生的超声波频带内,阵元的接收性能是良好的.以触发压电超声波源的电脉冲信号作为时间基准,对单一的和2个同时发射的、用以模拟油中局部放电的压电超声波源进行了定位实验.结果表明,利用该传感器对压电源的定位在传感器正法线处的系统误差小于2%,且能在一次检测中实现多超声波源的定位,故该传感器可以用于变压器中局部放电的定位.

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关phased receiving array的内容
在知识搜索中查有关phased receiving array的内容
在数字搜索中查有关phased receiving array的内容
在概念知识元中查有关phased receiving array的内容
在学术趋势中查有关phased receiving array的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社