通信天線 的英文怎麼說
中文拼音 [tōngxìntiānxiàn]
通信天線
英文
communication antenna-
Elliptic - beam antennas in satellite communications
衛星通信中的橢圓波束天線Review of multiple - beam antennas for satellite communications
衛星通信多波束天線綜述Design of switched beam antenna in mobile communication system
移動通信系統中的智能天線技術The radio blackout ends as the spacecraft slows down.
隨著航天飛機減慢速度,無線電通信又重新恢復。To keep the environment people live in, we should restrict or prevent many kinds of pollution, which includes electromagnetic radiation pollution. while we are considering setting up base station or evaluating the electromagnetism pollution of environment, we can measure on the spot. to save time, hard work and cost taken by measuring on spot, it is necessary to calculate and analyze the electromagnetic wave propagation in urban area
在對現有電磁輻射源(如移動通信基站、廣播電視發射天線等)環境電磁污染狀況進行評估時可以進行實地測試,但是對在建或擬建的輻射源則不可能進行先測試,同時為了避免實地測試的費時、費力和較大的測試費用,通過計算機來計算分析城市環境電波傳播顯得很有必要。In radiocommunications, the radiation in a lobe of a directional antenna
在無線通信技術中,定向天線以某一波瓣輻射的電磁能。Survey of earth station antennas for mobile satellite communications
衛星移動通信地球站天線發展綜述The antenna test turntable automatic test system used the multi - machinecollecting and distributing controlling mechanisms in this article. the lowerposition machine realized the real - time control of the electrically controlledsystem and the goniometric system, keeping the communication with the upperposition machine, and fed back the turntable condition information, and so on ; the upper position machine realized the data acquisition of the various axialangles, the transmission of the control command and the monitoring of thecurrent turntable running status, and so on
本文所研製的天線測試轉臺自動化測試系統採用的是多機集散控制機制? ?下位機實現對轉臺電控系統、測角系統實時控制並保持與上位機通信以及反饋轉臺狀態信息等工作;上位機實現轉臺各軸角度數據採集、控制命令發送以及監視當前轉臺運行狀態等工作。In this paper, the signal processing of sum and difference patterns of amplitude dual - plane monopulse radar and the effect of amplitude - plane non - consistency are analyzed from the coordinates relationship of four - horn antenna at length, and its corresponding simulation is verified, which bring convenience to engineering implementation
文中從四喇叭天線的位置坐標關系,詳細分析了雙平面振幅和差式單脈沖雷達信號處理過程以及三通道幅相不一致性的影響,並且進行了相應的模擬,為工程實現帶來了很大的便利。Though maximum likelihood detection ( mld ) can obtain optimum detection performance in mimo communication systems, the ergodic search increases the complexity exponentially with the number of the antennas, which lead to implemental difficulty
在mimo通信系統信號檢測中,最大似然檢測( mld )可以獲得最佳的誤碼性能,然而遍歷式搜索方式使得mld的計算復雜度隨天線數呈指數形式遞增,在實際系統中,往往難以實時實現或者不能實現。As the mimo system implies multiple antennas in both transmit and receive sides, the design of multiple antennas becomes very important in the next generation of wireless communication
Mimo技術在接收和發射端都引入了多天線,因此多天線的設計在新一代移動通信中顯得尤為重要。So it holds a ideal ability to anti - interference and has 2 scalar level resolution in location and measuring velocity than traditional radio induction technology. and the channel composed of the new radio induction system for communication is different from the parameter - constant channel and the traditional parameter - changing channel, its parameter is decided by the mutual induction between its antenna and induction - cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter. the channel composed of the new radio induction system is a new parameter - changing channel independently of time for communication
而且,由新型無線感應系統組成的通道既不是恆參通道,也不是一般目前所知的變參通道,其通道傳遞函數的幅值只與信號的頻率有關,與系統中天線和感應電纜之間的互感和天線的位置有關,而與時間無關,其通道傳遞函數的相位只與天線的位置有關,而與時間無關,由新型無線感應系統組成的通道是一種不隨時間變化的新型變參通道。On study of omnidirectional base station antenna use for personal communications
一種用於個人通信的基站全向天線的設計思路The technical specification of radiation pattern envelope for paraboloid antenna used in microwave relay communication systems
微波接力通信系統拋物面天線輻射圖包絡的技術要求Interference. gps signals are received by the antenna, amplified within the antenna assembly, and then relayed via cable to the oncore receiver module for processing
這種天線的設計反映了motorola對高標追的追求,即使再有電磁干擾的情況下操作, gps信號通過天線接收,在天線內置放大通過線纜傳輸到oncore接收器上進行數據處理。The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分:第一部分研究了脈沖多普勒雷達導引頭的信號建模問題,建立了雷達信號模型,主要包括:發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式,建立了信號和數據處理模型,主要包括:加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等,然後給出了信號處理流程。Noise and interference are inevitable in radar channel. they enter the received system through side or main beams, and reduce the system ’ s receiving signal - to - noise ratio ( snr )
在雷達通道中,不可避免地存在著噪聲和干擾,它們通過天線方向圖的邊波束或主波束進入接收系統,從而降低系統的接收信噪比。Technical requirement of communication antenna for naval ship
艦船通信天線技術要求In this paper, aiming at the control communication problem of satellite communication antenna system, the particularity of the communication part of the equipments which have relative movement is analyzed, and comparing to formerly communicationg project, a new project to resolve the communication problem is put forward, namely lower voltage power line carrier technology
本文針對衛星通信天線系統中的控制通信問題,分析了有相對運動設備間通信的特殊性,並與之前所用的通信方案進行了對比,提出了一種新的方案來解決該通信問題,即利用低壓電力線載波技術來實現通信。The video simulator is of significant flexibility and commonality. so long as the simulation software is changed, simulation of different radar signals can be implemented. the video simulator can dominate radio frequency ( rf ) equipment to export rf pulse to implement the function of radar signal environment integrated simulation system
模擬器控制射頻設備輸出的射頻脈沖,既可作為注入信號直接輸入雷達偵察接收機,也可以放大到足夠的功率后通過天線輻射,作為微波暗室的輻射源,實現雷達信號環境一體化模擬系統的功能。分享友人