高頻電波傳播 的英文怎麼說

中文拼音 [gāobīndiànbōzhuànbō]
高頻電波傳播 英文
propagation of high frequency radio wave
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 播 : 播名詞（姓氏） a surname
  • 高頻 : high frequency
  • 電波 : [電磁] radio wave; electric wave; hertzian wave
  • 傳播 : 1 （廣泛散布） disseminate; propagate; spread; （over）; diffuse; transmit; run 2 [物理學] propag...
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變，各向異性，非均勻、色散的復雜介質。為了保證依賴于電離層進行的短波通信質量，必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短波通信或高頻天波雷達相關的天波傳播通道的狀態，對短波通信和天波雷達工作起了重要的輔助作用。
  2. Attenuation mechanism and application study of high impulse electromagnatic wave propogation of gpr

    探地雷達高頻電磁波傳播衰減機理與應用實例
  3. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。
  4. A new standpoint produced from the study is that the guided wave system in the oil well is different from the normal circular wave guide, as the fluid is a conductive medium, and it allows the higher or lower frequency waves to propagate

    通過研究提出了由於井內流體為有耗媒質，油井構成的導波系統不同於一般的圓波導，可以傳播高頻或低頻電磁波的新觀點。
  5. In the aspect of saw devices, for zno has high coupling factor, and aln has high saw velocity, if zno thin film was deposited on aln thin film, the multiplayer film has not only high coupling factor, but also has high saw velocity, which was suitable for saw of high frequency

    在聲表面波器件應用方面，由於zno具有很大的機電耦合系數，而aln的聲表面波傳播速度較高，因此若zno和aln相結合，則不僅具有大的機電耦合系數，而且具有很高的聲表面波速度，這非常適合於製造高頻聲表面波器件。
  6. Indispensable for high quality optical carrier signal reception in a large dynamic range, agc analog optical receivers are widely used in the optical transmission of radio and microwave signals, such as fiber catv, direct broadcast satellite tv, wireless communication and radar

    摘要自動增益控制模擬光接收機廣泛應用於光纖有線電視、光纖直播衛星電視、無線通訊及雷達等射頻微波信號光傳輸，是實現大動態范圍光載波信號高質量接收必不可少的一項技術。
  7. At the same time, as more and more radio sources have been set up, electromagnetic pollution in urban area becomes more serious, which is harmful to people ' s healthy and communication system so it is necessary to simulate the electromagnetic propagation in urban area by computer being an approximate hf method in evaluating em scattering ， the complex ray method （ crm ） is valuable in actual applications ， mainly benefited from its simple physical model ， convenient mathematical formulation and computational efficiency, especially with the scenes of scattering from complex objects based on the condition mentioned above, a hybrid ray model of the urban area electromagnetic wave propagation prediction was established with the foundation of ray tracing theory and complex ray theory

    復射線技術作為一種求解波場問題的高頻近似方法，由於其具有物理模型簡單、數學處理方便、計算效率高等優點，在復雜的目標散射特性分析等應用領域中有著重要的應用價值。基於以上的情況，本文在射線追蹤理論和復射線理論的基礎上，為城區環境建立了混合射線預測模型。本文採用橢圓模型對已有的射線追蹤方法進行加速，並將復射線理論應用到城區環境電波傳播預測中，提出新的預測方法混合射線方法。
  8. High frequency surface - wave radar ( hfswr ) utilizes the surface - wave mode of vertical polarization electromagnetic wave propagation over sea water to detect targets of ships and aircrafts at distance beyond the line of sight

    高頻地波雷達（ hfswr ）依靠高頻垂直極化電磁波沿海洋表面繞射傳播的機理，實現對海面艦船目標和低空飛行目標的超視距探測。
  9. The muf and the possible maximum skywave field strength are calculated and are compared with the corresponding groundwave. and the conclusion is that the main propagation mode 200 kilometers on the sea is groundwave and the disturbance of skywave could be omitted

    得出天波傳播的最高可用頻率、可能的最強天波場強，並與相應的地波場強進行了比較，闡明了海上200公里距離上的短波通信中電波主要是以地波的形式傳播的，天波對地波通信的多徑干擾問題可以忽略的結論。
  10. As a high band - efficiency digital modulation scheme, dvbc ( digital video broadcasting of cable ) qam ( quadrature amplitude modulation ) modulator is widely adopted in the wide - band communication area, such as hdtv broadcasting, cable modem, microwave communication, satellite communication and so on

    正交幅度調制器（ qammodulator ）作為一種高頻譜利用率的數字調制方式，在高清晰度電視（ hdtv ）廣播、 cablemodem 、固定寬帶無線接入、衛星通信、數字微波傳輸等寬帶通信領域得到了廣泛應用。
  11. Today ' s fast growing radio communication market places stronger and stronger demands on the design of a radio system. a proper system design requires accurate and reliable radio channel models, among which the field strength prediction models are most important

    隨著無線通信的迅猛發展，特別是頻段提高、蜂窩小區尺度縮小和智能天線系統的使用，對電波傳播預測提出了新一輪的挑戰。
  12. The research of electromagnetic missile and the slow - decay effect is the advanced task of the electromagnetism, which can be widely used in many fields : ultra - wide radar, ultra - wide secrecy communication, high - power microwave and etc. the detailed analysis of the slow - decay effect of pulse propagation is presented in this paper

    電磁導彈及有關慢衰減電磁波的研究是當前電磁學的前沿課題之一，其應用領域十分廣泛，如超寬頻帶雷達、超寬保密通信和高能微波等。本文對脈沖傳播慢衰減特性進行了詳盡分析。
  13. Since there are only few papers about the topic, the simulating result have no alternative but to compare with the data of the upper inhomogeneous terrain. the similar trend is found for the two results, and larger propagation attenuation will follow the higher frequency or larger conductivity of the medium

    由於有關覆蓋層傳播方面的文獻資料幾乎沒有，所以只能把結果與地表均勻巖層的數據進行比較，結果表明平面波法和通信公式法計算得出的結果完全一致，並與在地表均勻巖層傳播結果趨勢類似，而且隨著頻率的增高或導電率的增大，傳播衰減也增大。
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