directional antenna

1. Tht article GPS positioning technology, DC servo technology, research and design a set of moving targets can implement automatic tracking of the directional antenna control system.
   文章以GPS定位技术、直流伺服技术为基础，研究设计一套能够对移动目标实行自动跟踪的定向天线控制系统。
2. An array of wave probes can be used as a directional antenna. Sound waves travel in all directions, the molecules in the air transmitting the impulse to their neighbouring molecules.
   排成阵列的测波仪，可作为波浪传播方向的感触器。声波向四面八方传播，而空气则把振动传给四周的分子。
3. A parabolic reflector for microwave or radio frequency radiation that is used as a directional antenna.
   作为定向天线的接受微波或无线电频率的抛物面镜。
4. The RVT is connected to a directional antenna to receive signals from the air vehicle flying up to a range of40km from the terminal.
   RVT连接到一个定向天线接受来自飞行器的信号，飞行距终端一直达40公里。
5. 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。
6. Through the adjustment and optimization of the antenna, higher antenna gain is achieved, to meet the requirement of high-gain omni directional antenna.
   本文通过对天线的调整与优化，实现了天线增益的提高，满足了全向高增益的要求。
7. Research and Development of the Tracking System for Smart Car Directional Antenna
   智能车定向天线跟踪系统的研究与开发
8. Applying an active vibration control method for the reduction of the lateral vibration of directional antenna is investigated.
   本文提出以电流回授主动振动控制方式，抑制指向性天线之侧向振动。
9. Telecommunication satellite with directional antenna
   具有定向天线的通信卫星
10. The Automatic Orientation and Tracking System for a Directional Antenna
    引向天线自动定向与跟踪系统
11. The effect of directional antenna on the performance of DSR routing protocol is studied in this paper.
    本文研究了方向性天线对DSR路由协议性能的影响。
12. 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。
13. Structural Design of An Omni-directional Antenna Pedestal
    某全向天线座的结构设计
14. Study on the Multi-beam Smart Antenna Array Realized by Directional Antenna
    定向天线实现多波束智能天线研究
15. This article introduces the composition principle and working process of the single-chip processor for controlling the automatic orientation and tracking of a directional antenna. It also describes the system characteristics, including the tracking speed and the precision of orientation and tracking.
    本文介绍了单片机控制引向天线定向与跟踪系统的组成、原理及上作过程，简述了系统的特点，讨论了定向及跟踪的速度、精度等问题。
16. Estimation of power azimuth spectrum for wireless channel using directional antenna measurements
    应用定向天线测量无线信道角度功率谱
17. Meanwhile, analyzed anti-interference performance of directional antenna.
    同时，分析了定向天线的抗干扰性能。
18. The main solution methodology combines the use of directional antenna and some intelligent location based algorithm.
    我们使用的最主要的解决方法是整合定向天线和智能定位的算法。
19. Through emphatically analysis and research on tracking principle of directional antenna, we put forward the calculation method of target azimuth angle and target servo angle of directional antenna based on GPS geographical coordinates.
    文中重点研究了定向天线的跟踪原理，给出了基于GPS地理位置坐标的天线目标方位角和天线伺服目标角的求解方法。
20. Secondly, the paper focused on the design of the car-borne directional antenna tracking system.
    第二，着重设计了本文智能车定向天线跟踪系统的方案。
21. The closing contribution in this dissertation is a miniaturized dual band dual polarized array ( DBDPA) design consisting of directional antenna elements for beam selection MIMO systems.
    论文最后研制了基于定向天线单元，适用于波束选择MIMO系统的微型化双频双极化天线阵列（DBDPA）。
22. The Networking Technology base on the directional antenna and mobile Ad Hoc technology could satisfy the features easily and has become a research hotspot.
    基于定向天线和移动adhoc技术的航空数据链组网技术能够很好的满足上述要求，成为研究的热点问题。
23. In power control, minimizing the transmission power of two nodes equipped with directional antenna is a challenge.
    在功率控制方面，尽量减少配有定向天线的两个节点之间的发射功率是一个挑战。
24. While the directional antenna has superiority on spatial reuse, antenna gain, transmission range and interference rejection, it can greatly improve the performance of wireless ad hoc networks.
    而定向天线的空间复用特性，以及它在天线增益、传输范围和抗干扰方面的优势，能够极大的改善无线adhoc网络的性能。
25. The paper is a practicing and application to make the directional antenna tracking system used in the smart car field, it also provides reference for the further study and develop.
    本文所做的工作是在智能车领域的一次实践和应用，为智能车的进一步研究和发展提供了一定的借鉴和参考。
26. Some of them have considered a specific problem occurred in wireless Ad hoc networks with directional antenna.
    他们中有些人认为，使用定向天线的无线adhoc网络有它特有的问题存在。
27. A scheme of transmitting and receiving antenna system of borehole radar is demonstrated, designed and fabricated in this paper, in which omni-directional antenna is used as transmitter while directional antenna array is used as receiver.
    采用全向天线发射、定向天线阵列接收的钻孔测井雷达收发天线系统设计方案，论证、设计、研制并实验测试了该天线系统的关键参数。
28. Thirdly, we realize the engineering of the car-borne directional antenna tracking system. Including the modular design of the system controller, such as power modules, peripheral interface modules, analog input and output modules, then we complete a system software design and debugging work.
    第三，研究了智能车定向天线跟踪系统的工程实现，包括系统控制器的模块化设计，如电源模块、外围接口模块、模拟量输入输出模块等，并完成了系统软件设计和调试工作。
29. Next analyzes and calculates of the load situation of directional antenna.
    分析并计算了天线的载荷情况，提出了提高定向天线稳定性能的有效措施。
30. For the directional antenna and wireless channel characteristics, there are many directional antenna based access control protocols have been proposed to achieve channel spatial reuse.
    针对定向天线和无线信道的特点，有许多基于定向天线的接入控制协议被提出来，以实现信道的空分复用。

noun

1. an antenna that transmits or receives signals only in a narrow angle