相干捕獲 的英文怎麼說

中文拼音 [xiānggānbǔhuò]
相干捕獲 英文
coherent trap
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 干 : 干Ⅰ名詞1 （事物的主體或 重要部分） trunk; main part 2 （幹部的簡稱） short for cadre Ⅱ動詞1 （做...
  • 捕 : 捕名詞（姓氏） a surname
  • 獲 : Ⅰ動詞1. （捉住; 擒住） capture; catch 2. （得到;取得） obtain; win; reap 3. （收割） reap; harvest Ⅱ名詞（姓氏） a surname
  • 相干 : 1 （多用於否定句或疑問句） have to do with; be concerned with 2 [物理學] coherent; 相干散射 coher...
  • 捕獲 : 1. （捉到; 逮住） catch; capture; succeed in catching; acquire; arrest; seize 2. （俘獲） trapping
  1. In this paper, research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver. / 4 - dqpsk is chosen as digital modulation scheme. the scheme of demodulation is baseband differential detection. sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking

    系統的發射機選定/ 4 - dqpsk為調制方式，接收機採用基帶差分解調的非相干解調方式，滑動相關器捕獲發送的pn序列，早遲門同步器跟蹤符號同步，使用相關器對同步后的符號進行最佳判決，並在這些演算法實現的基礎上，實現了直接序列擴頻和解擴技術。
  2. The signal format of gps is analyzed, the principle models and mathematical models are established, the ber performance is analyzed in a channel interfered with wide - bandwidth awgn, narrow - bandwidth awgn, transmitted signal, single - tone signal respectively. based on the results above interference methods are discussed and simulated. then the performance of code acquisition and code trace of a digital gps receiver are discussed. the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn, single - tone signal and multi - tone signal respectively

    建立了jtids的收發終端的數學模型，分析它在噪聲干擾、相關干擾、互相關干擾下的誤碼性能，提出較佳的干擾方法和干擾碼型，並進行模擬模擬；分析了gps的信號格式，建立了gps的原理框圖模型、信號數學模型，並對其在寬帶噪聲干擾、窄帶噪聲干擾、轉發干擾、單頻干擾等情形下的誤碼性能進行了分析比較，提出相對較佳的干擾方法，並做了計算機模擬，針對一數字式gps接收機中擴頻碼捕獲與跟蹤環的特性進行分析；建立了link11和link4a數據鏈調制解調數學模型，對它們在噪聲干擾、單音干擾、多音干擾等下的誤碼性能進行分析，最後對干擾情況進行了模擬模擬。
  3. By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter - satellite optical cdma communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of atp are understood well. by analyzing the factors to impact bit - error - rate ( ber ) from the received power, multi - user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration

    分析研究了衛星光cdma通信系統中衛星仰角、方位角和距離，給出了探測器能夠接收到的光功率以及atp子系統捕獲及跟瞄的范圍;對衛星光cdma通信系統性能模型和基於衛星振動系統性能模型的研究，分析了多用戶干擾、接收光功率、背景光噪聲、振動偏差以及碼速率對系統誤碼率的影響，給出了相應的改進措施。
  4. A pn code phase acquisition with non - coherent sequential detection

    基於非相干序貫檢測器實現的偽碼捕獲器
  5. It is generally believed that the incoherent pump destroys cpt

    一般人們認為，非相干泵浦總是破壞相干捕獲效應。
  6. When the polarization direction of the incoherent field and the amplitude and phase of the applied coherent fields satisfy certain conditions, the coherent trapping effect is maintained

    非相干泵浦產生的量子干涉在一定條件下可以保護相干布居捕獲。我們獲得產生相干捕獲的條件，找到由兩基態構成的暗態和亮態。
  7. We have separated the dark state a nd bright state, which are both the superposition states of the ground states. between the dark and bright states there is a unidirectional pathway of population transfer from the bright to dark state. as a consequence, the population transfer leads to cpt

    在暗態和亮態之間，有一條從亮態向暗態轉移布居的單向兩步通道，這個通道把原子布居轉古巴大碩士學位論文wn4as aer 』 s7ffesls移到暗態，從而產生原子布居的相干捕獲。
  8. It has been shown that at the heart of various quantum coherence effects lies cpt

    業已表明，在各類量子相干效應中，相干捕獲是一種基礎的效應。
  9. In this paper we have predicted two kinds of new quantum coherence effects. one is the strong - field index enhancement via selective population trapping of dressed states and the other is the preservation of the coherent population trapping ( cpt ) is by quantum interference of incoherent pump processes

    本文提出了兩類新的原子相干效應，一是利用選擇性修飾態捕獲產生強場折射率增強，二是非相干泵浦誘導的量子干涉保護相干捕獲。
  10. After that, it discusses the capture and tailing method for the false random code spreading code, including correlation and non - correlation method. between the two method, the correlation method is fit for the wireless communication

    接下來討論了偽隨機擴頻碼的捕獲和跟蹤方法，包括相干的方法和非相干的方法，其中非相干的方法更適合用於無線通信中。
  11. Next we consider the preservation of cpt by quantum interference of incoherent pump processes

    其次考慮非相干泵浦誘導的量子干涉保護相干捕獲。
  12. This kind of coherent trapping leads maximal atomic coherence, which characterizes ultralarge index of refraction and vanishing absorption

    這樣的相干捕獲導致最大的原子相干，就對應超大折射率和消失的吸收。
  13. Recent studies have shown that the quantum coherent population trapping, electromagnetically induced transparency, index enhancement without absorption, etc. these new effects have great potential for the control of the coherence properties of a medium, the production of high frequency lasers, the information storage and high precision measurements

    最近的研究表明，原子相干產生很多新的效應，如相干布居捕獲、無反轉激光、折射率增強、電磁誘導透明、電磁誘導吸收等。這些新效應對光學介質相干性質的控制、高頻激光的產生、光信息存儲和高度測量等方面具有巨大的應用前景。
  14. Recent studies have shown that the quantum coherence and interference have led to a lot of new effects such as coherent population trapping, electromagnetically induced transparency, index enhancement without absorption, etc. these new effects have great potential for the control of the coherence properties of a medium, the production of high frequency lasers, the information storage and high precision measurements

    最近的研究表明，原子相干產生許多新效應，如相干布居捕獲、無反轉激光、電磁誘導透明、折射率增強等。這些新效應對光學介質相干性質的控制、高頻激光的產生、光信息存儲和高度測量等方面具有巨大的應用前景。
  15. Quantum coherence and interference have led to the observation of many new effects and new techniques in quantum optics and atomic physics. examples include coherent population trapping, electrom agnetically induced transparency, lasing without inversion, and enhancement of the index of refraction without absorption

    當應用相干場來驅動光學介質時，可以使得介質的吸收和色散關系發生極大改變，產生許多新的效應，如相干布居捕獲、電磁誘導透明、無反轉激光、無吸收折射率增強等。
  16. Many novel physical phenomena such as coherent population trapping, lasing without inversion, electromagnetically induced transparency as well as spontaneous emission cancellation and enhancement based on quantum interference have been discovered

    基於量子干涉效應，產生了許多新的物理現象和效應，如相干布居捕獲、無反轉激光、電磁感應透明和自發輻射相消等。
  17. Some problems of wireless transmission are discussed in the paper, centering on the design of high performance physical channel structure, synchronization technique ( acquisition and tracking ) and coherent detection technique

    本文圍繞高速業務無線傳輸中的高性能物理通道結構設計、碼捕獲與跟蹤同步技術、載頻提取及相干接收技術等問題展開研究。
  18. Abstract : a numerical investigation of three - dimensional separated flows about a hemisphere - cylinder is presented. the analysis has been restricted to transonic and laminar flows. results are given for the complex flow field structures including shock, boundary layer, separated flow, vertical flow and their mutual effects. the topological structures of the separated flow is shown

    文摘:本文數值模擬了半球柱在跨音速、中等攻角時的粘性層流繞流，研究了流場中的復雜三維分離形態結構，其中包含流向與橫向的主分離、二次分離、以及激波邊界層的相互干擾，解釋了在球柱接合部精確捕獲的壓力波動與流動主分離、二次分離的影響關系，這個現象是前人的計算5 ， 6未捕捉到的。
  19. The resonant dressed transition and the spontaneous decay of the other transition constitute a two - step pathway of population transfer from one dressed state to the other. as the consequence, the population is trapped in one dressed state

    此時共振的相干躍遷與另一通道的自發輻射組成一個二步通道，將原子布居從一個修飾態經過輔助能級轉移到另一個修飾態，結果產生原子布居在一個修飾態上的捕獲。
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