相對傳輸響應 的英文怎麼說
中文拼音 [xiāngduìzhuànshūxiǎngyīng]
相對傳輸響應
英文
relative transmitting response- 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...
- 對 : Ⅰ動詞1 (回答) answer; reply 2 (對待; 對付) treat; cope with; counter 3 (朝; 向; 面對) be tr...
- 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)...
- 輸 : Ⅰ動詞1 (運輸; 運送) transport; convey 2 [書面語] (捐獻) contribute money; donate 3 (失敗) l...
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 相對 : 1. (面對面) opposite; face to face 2. (非絕對的) relative 3. (比較的) relatively; comparatively
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It has been shown that when the partially coherent beams propagate in the atmosphere, it may be less affected by turbulence than are fully coherent ones. moreover in laser fusion a highly coherent beam is transformed into a partially coherent beam, for reducing the speckle and for getting more smooth focused spot
例如,部分相干光在大氣中傳輸時所受大氣騷動的影響要比完全相干光小得多;並且部分相干光束具有光強比較均勻,對散斑低靈敏等優點而被應用於激光核聚變等領域。Chapter 2 : characteristics of propagation of ultra - intense laser beam in a partially stripped preformed plasma channel is discussed, in which the relativistic self - focusing effects, together with the perturbed plasma density, is discussed
第二章:本章闡述了超強激光光束在拋物型部分電離的預等離子體(聚焦和散焦)隧道中的傳輸特性。研究了相對論自聚焦效應和等離子體波引起的密度擾動對傳輸的影響。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd : yag激光器的發展狀況、主要特性及其應用,從四能級速率方程出發,推導了ld泵浦nd : yag激光器的閾值、輸出功率和斜效率的表達式,並簡述了激光器的工作原理、結構型式和倍頻方法;其次,以空間相關的速率方程為基礎,提出了ld端面泵浦nd : yag激光器的設計方法,給出了一定泵浦耦合方式下,振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據,以此為依據,設計了自聚焦透鏡耦合小功率ld泵浦nd : yag激光器和透鏡組耦合高功率ld泵浦nd : yag激光器,對激光器的輸出功率和功率穩定性等特性進行了實驗研究;再次,在帶尾纖輸出的高功率ld泵浦nd : yag激光腔內插入一隻空液晶盒,觀察到了激光器以單縱模運轉;最後,根據泵浦光焦斑端面位置對激光輸出功率的影響規律,提出了ld端面泵浦nd : yag激光位移傳感新方法,並進行了理論和實驗研究,研究結果表明:當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時,激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律,測量范圍和靈敏度依賴于泵浦功率,隨著泵浦功率的增加,測量范圍擴大,靈敏度提高,當端面泵浦功率為7 . 24w (最大輸出功率為1 . 926w )時,激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。Using emended gauss diffusion mode, taking wind erosion modulus as the ground oil pollutant sources, dust and oil pollutant quantity in air and polluting load in water were calculated, a relative model was founded
本文以土壤侵蝕的風洞實驗求得污染源源強,採用高斯模式對地表風蝕作用的傳輸量進行估算,進而對石油開發區落油通過大氣傳輸途徑對區域水環境(博斯騰湖)的影響進行了預測,建立了相應的模型。Three shaped profiles ( parabola, linear, and exponential ) have been considered. the exponential dispersion profile fiber loop is optimal for the propagation and compression of picosecond pulse. on the contrary, the parabola dispersion profile fiber loop is optimal for femtosecond pulse due to the high order effects such as the third order dispersion ( tod ), stimulated raman scattering ( srs ) and self steeping ( ss )
( 3 )研究不同色散遞減類型(拋物線遞減、線性遞減、指數遞減)光纖構成的環形腔中傳輸的特性,發現其色散曲線為指數遞減型光纖有利於皮秒光脈沖的傳輸與壓縮;而對于飛秒脈沖,由於三階色散( tod ) 、脈沖拉曼自散射( srs )及自變陡( ss )等高階非線性效應的影響,情況恰恰相反;色散曲線為拋物線遞減型的光纖構成的光纖環最有利於脈沖傳輸與壓縮。Finally, we study the effect of longitudinal wakefield in the propagation of intense laser in plasma and find that this effect leads to asymmetric self - phase modulation of the pulse
最後研究了尾波場效應對激光傳輸的影響,發現縱向尾波場效應將導致激光脈沖不對稱自相位調制。However, the effect of rsf leads to the singularity of beam redius focused to zero with infinity laser intensity when the laser power is lager than a critical value in the absence of other effects. then, we anlyze the effect of higher order relativistic nonlinearity ( hor ) and find that this effect can arrest the singularity due to the effect of rsf
因此,研究了高階相對論性非線性效應對激光傳輸的影響,發現高階相對論性非線性效應能夠抑制這種奇異性的出現;並對高階相對論性非線性效應與非傍軸效應作了比較,發現高階相對論性非線性效應起主要作用。Different with the traditional ifog, light beams within mz - ifog transmit along the forward direction, which avoid the kerr effect noise and the interferometric noises brought by the backward scattering and reflecting light. mz - ifog also gains a high using efficiency of light source and a strong output signal. the principle of mz - ifog is analyzed
與傳統sagnac干涉式光纖陀螺不同,此光纖陀螺結構簡單,兩路光信號採用前向傳輸,避免了後向傳輸光對光源的影響,也避免了後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲,光功率利用率高,輸出光功率大。Through the analysis of yanshan university campus network ' s physical topological model, logical topological model and data transfer character, etc, i build corresponding math model, make systematic analysis 、 deduction and calculation, and give some principal parameters which affect performance of lan and relationship between them
通過對燕山大學校園網的物理拓撲結構、邏輯拓撲結構、數據傳輸特性等的分析,建立起相應的數學模型,並對其進行了系統的分析、推導和計算。給出了影響局域網性能的主要參數及其對應關系。Now we are busy fitting and testing the asipp single - ion microbeam facility. the main work in this paper are as following : testing the performances of bend magnets and magnetic quadruple, simulating the course of beam - line transport, realizing the function of count of the number of radiated ions & control of the electronic beam shutter, calculating different voltage worked on the beam shutter of different beam - line, probing into some factors that may influence the controlling precision and providing some method to solve them
本課題所做的工作主要是對偏轉磁鐵、磁四極場進行性能測試和對束線的傳輸進行模擬計算;編程實現離子記數和束開關的控制;計算出使用不同束線時束開關上所應該加上的電壓值,並且對可能影響控制精度的因素進行了一些探討,並提出相應的解決方案。In this paper a kind of interferometric optical fiber gyroscopes based on mach - zehnder interferometric principle is proposed. the signals of this novel optical fiber gyroscope transmit along the positive direction, which avoid the interferometric noise, causing by the negative - directional scattering light and reflecting light, and the kerr effect noise. in this novel optical fiber gyroscope the light power ' s utilization efficiency is high, the output signal is strong
本文提出一種基於mz干涉原理的干涉式光纖陀螺,該種光纖陀螺的光信號採用正向傳輸,避免了後向傳輸光對光源的影響,也避免後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲,光功率利用率高,輸出光信號大。The proposed md mesh - based motion coding methodis then combined with the pairwise correlating transform, and acomplete md video coding scheme is proposed. further measures are takento reduce the mismatch between the encoder and decoder that occurs whenonly one description is received and the decoder reconstruction isdifferent from the encoder. the performance of the proposed scheme isevaluated using computer simulations, and the results show, compared toreibman s md transform coding mdtc method, the proposed schemeachieves better redundancy rate distortion performance
數據重傳必然會引起延遲,因而在需要很短延遲的應用中是行不通的,如雙向無線通信同時在以廣播方式進行數據傳輸時也是行不通的當有大量突發錯誤時,糾錯碼如分組糾錯碼block code及卷積碼convolutional code無法在不產生額外延遲及需要額外運算的前提下對數據提供足夠的保護而錯誤掩蔽的性能則受接收到數據與丟失數據之間的殘留相關性大小的影響。Ultimately, we obtained normalized abnormal curves for the frequency responses, through which we could reveal hew the sealed pressure case impacts the responses of the magnetic field sensor
在響應輸出端,測取幅頻特性和相頻特性,獲得歸一化的對比資料和頻響異常曲線,從而對密封前後磁場傳感器的性能變化有較清楚的認識。The major achievement of this dissertation is outlined in the following : 1. investigate the potential effect of switch routing on end - to - end service quality with both theoretical and experimental methods : it is found that service quality of lsp is better than that of ip routing if load on router is low or end - to - end bandwidth reservation is implemented, but lsp is more sensible to load on router. mpls must be used in company with policy based routing and packet classification to provide end - to - end qos service in internet ; 2
使用理論分析和實驗測試相結合的方法詳細分析了交換路由對端到端傳輸質量的影響:研究表明,在鏈路輕載或預留帶寬的情況下,交換路由系統對數據流的服務質量優于傳統路由系統;只有綜合應用策略路由、數據報分類調度和標簽交換才能有效實現internet環境下對端到端服務質量的控制; 2Finally, how the pwm - fcl contributes to the system stability, three - phase load unsymmetry and the transmission capacity is discussed. and how to decide a reasonable compensation rate of the pwm - fcl is also proposed
最後討論了pwm - fcl對系統穩定、三相負荷不平衡的作用以及它對輸電線路功率傳送能力的影響,並說明在設置其補償度時所應該考慮的問題。We also compared the effects of positive and negative third - order dispersion working with srs. the result shows that the effect of negative third order dispersion working with srs is more suitable for pulse propagation and compression. as a result, we proposed two methods to facilitate the propagation of optical pulse in nolm, and hence provided a theoretic guidance to the better design of eight - figure fiber laser
並且通過比較正、負三階色散分別與拉曼散射效應的相互作用對飛秒脈沖傳輸特性的影響,發現脈沖拉曼散射與負的三階色散相互作用更有利於飛秒脈沖的傳輸與壓縮,從而提出了改善了飛秒光脈沖在環形腔中的傳輸特性的兩種方法,進而為「 8 」字形光纖激光器的優化設計提供了理論指導。In this paper, the evolution equations of the parameters of the optical soliton pulses were derived by means of variational method, in order to investigate the influence of the fifth - order nonlinear effect on the transmission properties of optical soliton in the coupling fiber, and the effects of the fifth - order nonlinearity were discussed on amplitude, frequency band width, chirp, frequency, center position and phase
摘要運用變分法導出五階非線性作用下孤子的參數演化方程組,研究五階非線性耦合光纖中孤子的傳輸特性,討論五階非線性效應對孤子的振幅,頻寬,啁啾,頻率,中心位置及相位的影響。The forming mechanism of crosstalks in the tdm system was analyzed theoretically, and the relationship between crosstalks and the extinction ratio of optical pulse modulator used in the tdm system was investigated. the interchannel and intrachannel crosstalks in the wdm system were discussed separately, and the contributions to crosstalks were appraised from architecture ’ s alteration, the finite isolation between channels in multiplexers or demultiplexers, and nonlinear effects in the system. noises in the large - scale multiplexing system were studied theoretically, and all kinds of factors were considered that have relation to noises, phase resolution, and dynamic range of the system, such as multiplexing channel number, the length of the transmission fiber, using in - line erbium - dropped fiber amplifiers or not, and so on
本文從理論上分析了光纖水聽器時分復用系統串擾的形成機理,分析了光脈沖調制器的消光比與系統串擾的關系;分別對光纖水聽器波分復用系統的異頻串擾和同頻串擾進行了理論分析,研究了光纖水聽器波分復用結構、波分復用器與解復用器隔離度等因素以及非線性效應對系統串擾的影響;對大規模光纖水聽器復用系統噪聲進行深入細致的理論分析,研究了系統噪聲、相位解析度、動態范圍與復用數目、傳輸光纖長度、中繼光纖放大器等諸多因素的關系。Based on the two ex isting underwater acoustic channel models ( the rice model and the rayleigh model ), we simulated the effects on the image signal underwater transmission with different ofdm parameters. by selecting appropriate ofdm parameters, we realize a simple offline communication system. besides, parts of programs based on ti tms320c62x are realized in this thesis
本研究先根據現有的兩類水聲通道模型(萊斯衰落模型和瑞利衰落模型) ,藉助于計算機模擬,詳細考察不同的ofdm參數對于圖像信號水聲傳輸的影響,然後根據模擬的結果,選擇適當的參數實現了一個簡單的脫機( offline )通信系統,最後在ti公司的tms320c62x上實現部分相應的通信模塊。In this paper, the study method is adopted for employing matlab to simulate the transition feature of track circuit, the steady - state response of track circuit is simulated when the alternative sine wave signal is inputted, and the corresponding results are interpreted
城市軌道交通的迅速發展要求對軌道電路的特性有深入的了解。本文採用matlab軟體模擬軌道電路的傳輸特性,對軌道電路在正弦交流輸入下的穩態響應進行了模擬,得到了相應的的模擬結果和曲線圖。分享友人