陸地移動無線 的英文怎麼說

中文拼音 [liùdeyídòngwúxiàn]
陸地移動無線 英文
land mobile radio （lmr）
  • 陸 : 陸數詞（六的大寫） six （used for the numeral 六 on cheques, etc. to avoid mistakes or alterations）
  • 移 : Ⅰ動詞1. （移動） move; remove; shift 2. （改變; 變動） change; alter Ⅱ名詞（姓氏） a surname
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 陸地 : dry land; land; terrace; earth; terrestrial; shore
  • 移動 : 1 （改換原來的位置） shift; move 2 [力學] translation motion; removal; shifting; dislocation; dis...
  • 無線 : wireless無線電報 wireless telegram; radiotelegram; 無線話筒 radio microphone ; 無線裝訂 unsewn binding
  1. In order to utilize the frquency resource adequately and increase the capacity of mobile communication system, the wireless electric wave propagation of existing mobile system always adopts the microcell structure. forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network, at the same time it is a precondition for the research on the microcell mobile system. the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond, that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method, that is establish the deterministic model based on theoretical analyse. the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth, and introduce the common path loss transmition model in land mobile communication system, also point out the localization of these models based on experiential methods

    而精確預測無線電波傳播路徑損耗特性，則為合理的微蜂窩無線網路規劃、設計提供了必要條件，同時也是研究微蜂窩移動通信系統性能的前提。無線電波傳播預測的方法分為兩類：一是用沖激響應法，即根據實驗、統計所得數據建立經驗性傳播預測模型；另一種是用射線跟蹤方法，即依據理論分析來建立確定性的傳播預測模型。本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性，介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型，並指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。
  2. Accordingly ray tracing model for microcells propagation prediction has become an important subject. this paper discussed the characteristic of propagation in symmetrical atmosphere on the earth, and introduced several kinds of traditional path loss propagation model in land mobile communication system, also pointed out the localization of these models based on experiential methods

    本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性，介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型，並指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。
  3. Otar digital private land mobile radio over - the - air - rekeying operational description

    數字式專用陸地移動無線電發射密鑰更換
  4. Pmr requirements and measurement methods of electromagnetic compatibility for radio communication equipment part 3 : private land mobile radio and ancillary equipment speech and non - speech

    無線通信設備電磁兼容性要求和測量方法.第3部分:個人陸地移動無線電設備
  5. Associated with the research project, the author has done some research on the synchronization issues in utran and the synchronization methods used in ip networks to transport circuit emulation services ( ces )

    本文結合科研項目的需要，對第三代移動通信系統陸地無線接入網（ utran ）中的各種同步問題以及全ip網路中傳送電路模擬業務的同步方法進行了比較深入的研究。
  6. Then, after the depiction of the network architectures of umts and utran, the five synchronization issues in utran, including the " network synchronization ", " node synchronization ", " transport channel synchronization ", " radio interface synchronization " and " time alignment handling ", are discussed in detail

    然後在簡要介紹了第三代移動通信系統及其陸地無線接入網的網路結構之後，較為深入的研究了utran中的網同步、節點同步、傳輸通道同步、無線介面同步和時間對齊處理等五種同步問題。
  7. Tetra is the acronym for terrestrial trunked radio, a world - wide standard for digital private mobile radios developed by the european telecommunications standards institute etsi

    Tetra是terrestrial trunked radio （陸地集群無線電）一種由歐洲電信標準協會（ eisi ）開發的全球化私人數字無線電移動設備標準的縮寫。
分享友人
分享到 Line

分享到臉書