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- The reasons are analyzed,and a modification method is presented, in which DSR controls antenna pattern used by transmitting node,part of packets are sent with omni-antenna and the others are sent with directional antenna. 分折了此现象产生原因,并提出了一个改进方法; 由DSR协议参与控制分组发送时使用的天线模式,对部分影响协议性能最为严重的分组采用全向发送,其余分组使用方向天线发送。
- directional antenna pattern 定向天线辐射图
- An array of wave probes can be used as a directional antenna. 排成阵列的测波仪，可作为波浪传播方向的感触器。
- In radiocommunications,the radiation in a lobe of a directional antenna. 在无线通信技术中，定向天线以某一波瓣辐射的电磁能。
- A radio receiver and directional antenna used as a system to determine the angular direction of incoming radio signals. 无线方向探测器一种无线电接收和指向天线系统，用来确定收到的无线电信号的角方向
- In radiocommunications, the radiation in a lobe of a directional antenna. 在无线通信技术中,定向天线以某一波瓣辐射的电磁能。
- Connect the Directional Antennae (9). 连接定向天线（9）。
- Accurate measurement of antenna pattern is important to spaceborne SAR image application, and distributed target antenna pattern measurement is widely concerned. 天线方向图的准确测量,对星载SAR图像的应用具有重要作用。 分布目标辐射定标在星载SAR天线方向图测试中受到广泛重视。
- It is convenient to measure the RCS, and the antenna pattern by this system having resolutions of both the turning angle of 1/36 degree and the echo signal voltage of 2.5mV. 该系统具有1/36度的转角分辨能力和2.;5mV的回波电压分辨能力;适用于目标RCS、天线方向性图等测量。
- A double population genetic algorithm (DPGA) is presented and applied to synthesize the array antenna pattern by controlling only the current amplitudes. 提出一种双种群遗传算法(DPGA)优化阵元电流幅度,以实现对阵列天线方向图的综合。
- It uses 3 adjacent BSs of the existing system to constitute a new cell based on the typical directional antenna configuration. 该系统可兼容现有的定向天线覆盖的蜂窝结构，利用3个相邻基站的共同覆盖形成有序分布的正六边形小区。
- GeoSat - GeoSat provides the Elevation and Azimuth for a directional Antenna when the LatLong of the User and Longitude of a GEOsynchronous SATellite is provided. 当地球同步人造卫星经度和用户的位置提供给GeoSat时,它会为有向天线提供海拔与方位。
- In order to reduce routing load and route coupling, a new scheme the reliable minimum energy node disjoint multipath routing with directional antenna (RMENDMRDA), is presented. 摘要为减轻节点不相交多路径路由负载和解决路径间的耦合问题，提出了一种基于定向天线的最小能量节点不相交多路径自组网路由算法(RMENDMRDA)。
- In this paper some salient features and advantages of DAR are described,and some problems associated with space-time signal processing and antenna pattern are discussed,finally a self-cohering method using beamforming technique is introduced. 本文论述了它的一些突出特点和优点,讨论了空时信号处理与天线方向图的一些问题,最后介绍了利用自适应波束形成获得自相干的方法。
- However, the optimal results being a statistical average, the antenna pattern of random phasing is unsteady with the scanning angle and scanning period, so it is not easy to form the actually needed codes for control of the antenna scanning. 应用遗传算法对随机馈相方案进行优化，能有效抑制寄生副瓣的出现，形成扫描空域确定的波控代码，实现相控阵波束无惯性的精确指向。
- The thesis not only provided the Lagrange multiplier algorithm for designing the desample filter, but also the algorithm was designed to take account the effect of the antenna pattern of the SAR used in collecting the raw data. 论文不仅提出了使用拉格朗日乘子法对降采样滤波器的设计方法而且在设计中考虑了天线方向图的影响。
- If the ship's EGC receive facility shares a directional antenna with an INMARSAT ship earth station, only the MSI broadcast through the satellite which is being tracked by the SES will be received. 如果船舶EGC接收设施与INMARSAT船舶地球站共同使用一个定向天线，则只能接收由SES正在跟踪的卫星所播发的海上安全信息。
- The paper makes a review on the recent advance in this material, with a focus on the applications of the metamaterial in the military use, such as the radar image, directional antenna and absorbing. 详细的回顾了这种新型人工电磁材料背景、研究进展，并着重介绍了这种材料在微波频段雷达成像，定向天线，隐形等军事领域的应用前景。
- The paper introduces the design and development of directional antenna turntable servo system for the communication between the ship with a microstrip antenna and the station with a microwave radio. 本文论述了用于海上船只与地面站微波通信的定向天线转台伺服控制系统的设计与开发过程。
- Finally we use FR4 to fabricate the antenna and use the vector network analyzer to measure the reflect coefficient、antenna impedance and the antennas pattern in the chamber. 再以FR4板来实现并用网路分析仪来量测其反射系数与用无反射室实验室来量测天线的场形。
