查询词典 antenna array

Computer simulations reveal that among the 20:1 ultra-wide frequency range VSWR is small, antenna pattern doesn't split and the lognitudinal length is less than half of the traditional small angle LPDA.

计算机模拟结果表明：该天线在20：1的超宽频带内驻波比小、方向图不分裂，纵向长度比传统方法设计的LPDA缩短一半以上。

The health and safety officer said that the wire to the antenna catches on stuff as the officer works and causes a problem.

健康与安全官员说对天线的导线风行材料，当官员工作并且造成一个问题。

The parabolic dish antenna provided helical scan for air search, and conical scanning for precision tracking.

工作频率在2700~2900MHz。

The content of the graduation paper is to design and simulate the helical antenna.

该毕业设计的内容主要是对螺旋天线具体设计，并进行仿真。

The effect of the size of the ground on the electric properties of helical antenna is investigated.

研究了一种快速优化设计超宽带加载线天线的新型优化算法。

The hardware included helicon wave antenna and focusing system.

其中硬件系统主要包括：螺旋波天线和辉光聚焦系统的设计；PCL-818HG数据采集卡输出的+5V稳定信号，经过分压电阻和三极管后，作为数控器的外部启动/停止信号，控制步进电机带动光谱仪转动；另外，为了减小光电倍增管的噪声，单独为其提供了稳定的高压直流电源。

After the astronaut lands the moon, has laid aside a hemispheroid diameter number Mi Da antenna on the Moon, with by transmits and accepts the information to the Earth.

宇航员登月后，在月球上放置了一个半球形的直径数米大的天线，用以向地球发送和接受信息。

Puts after the month surface on, under sunlight illumination temperature increment, when achieves the transition temperature, the antenna "recorded" had own original appearance, turned a giant hemispheroid.

放到月面上以后，在阳光照射下温度升高，当达到转变温度时，天线又"记"起了自己的本来面貌，变成一个巨大的半球形。

The key technique in the MUSIC algorithm is the signal subspace extraction which can be found from the eigen decomposition of the sample covariance matrix of the antenna receive signal. The eigen value decomposition of a Hermitian matrix is implemented by using the QR algorithm, and the signal subspace is constituted by collecting the significant eigen vectors.

在复合信号分类演算法中的重要关键为信号子空间与杂讯子空间的分解，这两个子空间可以利用对天线收到信号的取样共变异矩阵做特徵值分解中求出，本篇并以QR演算法实现厄米特矩阵之特徵值分解，信号子空间便是由分解后的特徵向量所集合而成。

Invengo, headquartered in Shenzhen, China and with a subsidiary company in Herndon, VA, designs and manufactures a variety of EPC C1G2 and ISO18000-6B compliant RFID hardware, including reader, antenna, tag, label, inlay, etc.

远望谷拥有40多项RFID专利技术，及5大系列60多种具有自主知识产权的RFID产品，包括阅读器、电子标签、天线及其衍生产品。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。