天线

It consists of Server, data sampling terminal, GIS dispatching terminal, switch, tower antenna, MODEM, and RADIO station. For saving frequency resources, time-sharing was adopted; for saving investment, concentrate differential.

监控中心采用局域网的结构形式，主要由网络服务器、数据采集终端、GIS调度终端、交换机、铁塔天线、天线共用器、MODEM、RADIO等部分组成。

This new kind of smart antenna system has the advantages both of the smart antenna and the switched beam antenna, enlarges the system capacity and is easy to realize.

这种新的智能天线系统结合了两种天线系统的优点，最大限度的扩大了系统容量，而且易于实现。

The expression of antenna temperature that this paper has derived is based on the situation that the main beam of the antenna is not on the axis, so it has universality.

本文所推导得出的天线温度TA 的表达式是建立在天线波束中心不在坐标轴上这种情况之上的，因此更具有一般性。

In this paper, the wide beam antenna array is used as the antenna of an airborne SAR with ultrahigh azimuth resolution.

该文将宽波束天线用于超高方位分辨率机载SAR，计算了天线的性能指标和SAR的系统参数。

Based on the analysis of characteristics of smart antenna,detailed discussion is performed for the theoretical methods of smart antenna. According to different methods of antenna beam processing and forming,smart antenna's architecture and classification are introduced.

0引言智能天线的概念是90年代初由一些学者提出，在微波技术、自动控制理论、自适应天线技术、数字信号处理技术和软件无线电技术等多学科基础上综合发展而成的一门新技术。

When different beam width of the smart antenna is adopted, the TD-SCDMA system is simulated, and the results of the simulation prove that the system capacity can be greatly improved since the smart antenna is adopted.

在智能天线波束宽度不同的情况下，对TD－SCDMA系统进行了仿真，结果表明，采用智能天线技术可以较大幅度提高系统容量。

When different beam width of the smart antenna is adopted, the TD-SCDMA system is simulated, and the results of the simulation prove that the system capacity can be greatly improved since the smart antenna is adopted.

在智能天线波束宽度不同的情况下，对TD－SCDMA系统进行了仿真，结果表明，采用智能天线技术可以较大幅度进步系统容量。

Emphasis is placed on a practical HPM radiating antenna fed by beam waveguide.

该天线工作在X波段时，功率容量大于1 GW，天线增益大于50 dB。

Previous studies have put emphasis on how to utilize space channels between receiving and emitting antennas. For the first time, a new conception of wide-sense space channels is proposed which combined antenna channels and beam channels.

以往的研究重点放在如何利用收发天线间的多路空间信道，该文首次提出混合天线信道与波束信道的广义空间信道这一新概念。

In this paper, the statistical model for co channel interference is constructed based on multi beam smart antenna, the concepts of cellular communication system, and the feature of multi beam smart antenna.

根据蜂窝概念和多波束智能天线的特点建立了基于多波束智能天线的同频干扰统计模型，在考虑瑞利-对数正态分布衰落的传播特性后，得出中断概率的表达式。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。