模擬脈沖傳輸 的英文怎麼說
中文拼音 [mónǐmàichōngzhuànshū]
模擬脈沖傳輸
英文
simulation pulse transmission- 模 : 模名詞1. (模子) mould; pattern; matrix 2. (姓氏) a surname
- 擬 : 動詞1. (設計; 起草) draw up; draft 2. (打算; 想要) intend; plan 3. (模仿) imitate
- 脈 : 脈名詞1. (動脈和靜脈的統稱) arteries and veins2. (脈搏的簡稱) pulse 3. (像血管的組織; 連貫成系統的東西) vein
- 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...
- 模擬 : imitate; simulate; analog; analogy; imitation; simulation模擬艙 boilerplate; 模擬電路 [電學] circ...
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Simulation calculation for the energy deposition profile and the transmission fraction of intense pulsed electron beam at various incident angles
不同入射角度下強流脈沖電子束能量沉積剖面和束流傳輸系數模擬計算And i had made simulation with matlab. the next part of my paper, i analyzed elements which affecting the signal in superhigh optical networks, and simulated the loss - managed network
本文就100fs的孤子在nldc中傳輸控製做了研究,用一控制脈沖來控制信號孤子的傳輸方向,並用matlab做了模擬。The optical channel models for airborne submarine laser communication are built. the multipath time spreading of signal pulse is studied. the waveform of received signals in receiver in submarine laser communication system is analyzed and simulated
通過蒙特卡羅方法的模擬研究,建立了機載激光對潛通信的光脈沖傳輸模型,研究了信號光脈沖的時間擴展,分析並模擬了接收面上的接收波形。In the section 2, firstly based on the diffusion approximation theory, the temporal characteristics of the reflectance and the transmittance were theoretically analyzed in turbid tissues ; secondly, the curves were simulated that the intensity and the pulse shape of the time resolved reflectance and transmittance versus the absorption a, the scattering s and the anisotropy coefficient g in two different boundary conditions : semi - infinite turbid media and homogeneous slab ; at last, the optical properties can be derived from the curves ; in the section 3, the conditions of ultra short laser pulses of different pulse - width and shapes has been theoretical analyzed and calculated, besides, the simulated the curves of the intensity and pulse shapes of the reflectance and transmittance in a homogeneous slab are obtained for use and future studying
第二章中首先根據漫射近似理論對超短脈沖在以生物組織為典型的混濁介質中傳輸進行了理論分析,然後對兩種邊界條件下產生的漫反射、漫透射光脈沖強度和形狀隨各光學特性參數的變化情況進行了數值模擬,最後得到了混濁介質的光學特性參數與漫反射、透射脈沖強度與形狀的關系曲線。第三章對不同形狀和脈寬的脈沖光源入射到混濁介質中產生的漫反射、漫透射脈沖的強度和形狀進行了理論分析和數值模擬,並將高斯脈沖與方波脈沖情況進行了對比,得到了各種情況的漫反射、漫透射脈沖強度、形狀與各光學特性參數的關系曲線,這對從分析脈沖形狀中提取介質的光學特性參數的信息有重要的意義。The various medium parameters have different influence on the reflection of the laser pulse. based on the diffusion approximation theory, the boundary condition of semi - infinite homogeneous media, the influence of the absorption a, the scattering s and the anisotropy coefficient g on the ultra short laser pulse of different pulse - width and shapes has been researched
論文對超短脈沖在混濁介質中的傳輸進行了理論分析和數值模擬,並在不同脈寬的高斯脈沖和方波脈沖入射到混濁介質的漫反射、漫透射脈沖強度和形狀進行了理論分析和數值模擬,得到了它們與各光學特性參數的關系曲線。The simulation results have shown that sigvd of the temporal part is observed when the diffraction - free distance is longer than the dispersion length of sigvd. sigvd can be used to compensate the dispersion of medium, and a diffraction - free and quasi - dispersion - free pulsed beam, similar to a spatiotemporal soliton, can be produced in a dispersion medium
數值模擬的結果表明,只要相應的衍射距離大於空間誘導色散的距離,空間誘導色散理論可以很好的描述脈沖的演化過程;利用空間誘導色散可以補償介質色散,從而可以在色散介質中實現無衍射無色散的類時空孤子的傳輸。The results from the calculation and simulation indicate that this thyristor trigger has had a wide triggering angle, high controlling precision and better symmetry output pulses, whereby obviously improving the dynamic performances of the digital - type trigger and overcoming some defects in traditional triggering electric circuit in such a way as to satisfy the requirements by the diqital controlling equipment with high power and reliability
計算和模擬結果表明,該觸發器的觸發角范圍大、控制精度高、輸出脈沖對稱度好,明顯地提高了數字式觸發器的動態性能,並克服了傳統觸發電路的一些缺陷,可滿足大功率和高可靠性數字控制設備的要求。In this thesis we study the propagation of the ultrashort pulsed beams by theoretical method and the numerical simulation
本文在理論上研究了超短激光脈沖光束的傳輸問題,並給出了數值模擬結果。As the dispersive influence can be easily described by a frequency transfer function, the feasibility of measuring the function with the g - s algorithm is researched numerically in the next part. from the results of simulation with fibers with different length and pulses with different width, it ’ s known that the convergence of the algorithm is related to the difference between the input and output pulse. then, the influence of attenuation and self phase modulation of fiber is discussed, and the influence of the delay phenomenon and fitted polynomial is also analyzed
通過對不同光纖長度和不同輸入脈沖脈寬的計算,得到了g - s演算法的收斂性與輸入波形和輸出波形之間的關系;在此基礎上,通過對光纖損耗、自相位調制的模擬,分析了損耗和自相位調制對光纖傳遞函數測量的影響;本文還分析了波形測量中的拖尾現象和多項式擬合對測量的影響,進而,對利用g - s演算法進行單模光纖傳遞函數測量的可行性進行了闡述。It is well known that for an optical pulse, its distribution in time domain is infinite. but only a limited time window width t _ ( w ) may be selected in numerical calculations because of the limitation of the microcomputer. therefore, the selection of t _ ( w ) is also a key aspect that should be considered carefully in numerical simulations
基於此,本文提出了利用分步傅里葉方法計算光脈沖在光纖中傳輸時間窗口的選取方法,給出了正確模擬光脈沖通過不同長度的光纖后光脈沖的變化所要選取的時間窗口(即計算過程中所取的積分上下限之差) 。In this paper, first, the study of the distribution of electromagnetic field, energy, power, reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants are studied. then, the behavior of propagation of am signal and gauss pulse signal through the waveguide are simulated by magic code , and the plots of electromagnetic field, energy, ponyting vector and their spectrums at different time and different position are obtained. and, the group velocity and energy velocity of wave packet through barrier are calculated
從90年代開始, emig和martin 、 landauer等人研究了分段填充不同介質的波導中的電磁脈沖的傳播。在本論文中,作者首先推導出分段填充不同介質的波導中的電磁場分佈、能量、傳輸功率以及反射系數和傳輸系數的表達式,然後,採用magic程序模擬了這種波導結構中電磁波的傳播情況,得到了在不同時刻和不同位置處的電磁場分布圖、能量圖、坡印廷矢量圖以及它們的頻譜圖,並由模擬結果計算了波包穿越勢壘的群速和能量速度。The dissertation is aimed at the theory and practical application of photoconductive semiconductor switches ( pcss ), which is the kernel of uwb photoconductive pulse source. in chapter 1, after introducing the background of the dissertation, the development of uwb photoconductive pulse source is briefly reviewed. at the same time, the main work and contribution is generalized
本文以研究超寬帶光導脈沖源的核心光導開關的工作原理和實際應用為目的,模擬了光導開關在線性模式下的輸出電脈沖,研究了以光導開關為核心器件的電脈沖成形電路,以及電脈沖的傳輸和輻射。This paper designs a measurement system and measures the main properties of power line practically. the characteristics of power line are analyzed in detail, and a power line channel model is presented which consists of the parametric transfer function model and the simulating model of background noise, narrow noise and impulse noise. simultaneously the simulating method on the computer is presented
本文設計了一個測量系統對實際電力線通道的主要特性進行了測量,詳細分析了電力線的信號傳輸特性和噪聲特性,給出了一個實用的室內電力線通道模型,包括參數化的傳輸函數模型以及背景噪聲、窄帶噪聲和脈沖噪聲的近似模型,並給出了計算機模擬實現方法。Abstract : a noise model for the analog correlator used in the ultra wideband receivers is proposed due to lack of simulation capability on noise performance of the correlator in current eda tools. the analog correlator circuit is divided into several parts to calculate the equivalent noise sources respectively. the ideal impulse generators, instead of the noise sources, are then applied to obtain the time varying transfer functions. fourier transforms are carried out to explore the relationship between the noise input and output in frequency domain for each part. then the symmetrical noise sources are grouped together and the periodicity of the circuit is utilized to further simplify the model. this model can be used to evaluate noise performance of the correlator
文摘:給出了分析模擬相關器的噪聲模型.將相關器分成不同的幾個子模塊后,對各模塊分別計算等效噪聲源.然後用理想脈沖源代替噪聲源計算電路的時變傳輸函數,接著用傅里葉變換計算輸入輸出的頻域關系.利用電路的對稱結構合併對稱的子模塊可以進一步簡化模型.該模型可以用來估計相關器的噪聲性能In this work, incident super - gaussian pulse propagation in conventional single - mode fibers has been investigated in detail after taking into account the fiber chromatic dispersion. the results show that for an incident super - gaussian pulse with steep leading and trailing edges, its shape undergoes a variation from near - rectangular, two - peak, and finally to single - peak. in the meantime, its peak intensity increases at first, after passing a maximum, and finally decreases monotonously
數值模擬的結果表明:超高斯入射光脈沖在光纖中傳輸時脈沖波形、瞬時惆啾、以及峰值強度的演變規律與高斯入射脈沖不同,脈沖波形不再總保持單峰結構,通常將經歷一個從近平頂、多峰、最後到單峰的演變過程;從脈沖的前沿到后沿,瞬時明啾也不再為線性,而是具有多個極值;峰值強度隨傳輸距離的變化趨勢也不再為一單調遞減,而是先增加后減小。In this work, after giving the selective method of the time window width and the minimum time window width required for corrected calculations of optical pulse propagation in fibers, the shapes of various incident pulses after passing through different fiber lengths have been simulated by selecting different time window widths
在此基礎上,對不同的光脈沖在光纖中的傳輸進行了數值模擬,發現前人得出的超高斯光脈沖在光纖中傳輸會由於色散而產生脈沖形狀扭曲這一結論是錯誤的,並指出了錯誤的原因所在。We discussed detailedly the application of parameter - induced stochastic resonance in binary baseband pulse amplitude modulated ( pam ) signal transmission. the system ' s measurements : bit error rate and channel capacity were deduced. the numerical simulation demonstrated our theoretical analyses
我們著重討論了參數誘導的隨機共振在二進制基帶脈沖幅值調制( pam )信號傳輸中的應用,詳細推導出了衡量系統傳輸性能的誤碼率和通道容量公式,並利用模擬模型進行了數值模擬,理論分析和模擬結果非常符合。A theoretical investigation by split - step fourier method is presented on the propagation of a femtosecond gauss pulse in photonic crystal fibers
摘要運用分步傅里葉方法數值模擬了飛秒高斯脈沖在光子晶體光纖中的傳輸,計算分析了初始啁啾對脈沖壓縮效應的影響。The specific route is as follows : firstly, the output signals from the multipath sensor are nornalized, i. e., all sensor signals ( including the analog data ) are transformed into multipath square wave pulse signals to form multipath parallel condition codes. these codes are treated as input signals for dac to obtain a series of dispersed analog signals for output as input signals for the vco. finally, a high frequency modulation signal is conducted at the vco ' s output
具體技術路線如下:先將由多路傳感器輸出的信號進行歸一化處理,即將所有傳感器信號(包括模擬量)轉換成多路方波脈沖信號,以形成多位并行信號的狀態碼,將其作為dac的數據輸入信號,從而得到一系列離散的模擬信號輸出,作為vco的輸入信號,最終在vco輸出端形成高頻的調制信號。分享友人