連續波傳輸 的英文怎麼說
中文拼音 [liánxùbōzhuànshū]
連續波傳輸
英文
continuous wave- 連 : Ⅰ動詞1 (連接) link; join; connect 2 (連累) involve (in trouble); implicate 3 [方言] (縫) ...
- 續 : Ⅰ形容詞(連接不斷) continuous; successive Ⅱ動詞1 (接在原有的后頭) continue; extend; join 2 (...
- 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)...
- 輸 : Ⅰ動詞1 (運輸; 運送) transport; convey 2 [書面語] (捐獻) contribute money; donate 3 (失敗) l...
- 連續 : continuation; succession; series; continuity; continuing; running; continuous; successive; contin...
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Abstract : according to the continuative condition of the tangential fields on the slot aperture which is the inclined narrow - slot on the broadwall of a sectoral waveguide, the moment method is used to calculate the magnetic current coefficient and distribution. then the scattering field, the scattering parameter and the equivalent impedance are obtained. leting only the te11 dominant mode propagates in the waveguide, the scattering parameters and the normalized equivalent series impedance in the x - band are computed. the basis disigned the slot antenna and the slot array is offered
文摘:根據縫隙口面切向場的連續條件,採用解析數值法矩量法,對扇面波導寬壁上窄的斜縫進行了計算,解得了磁流系數及其分佈,並得到散射場、等效散射參量及等效阻抗等重要參數.假定波導中僅有te11主模傳輸,在x波段計算了散射參量和歸一化等效串聯阻抗,給出計算結果,為縫隙天線和縫隙陣列設計提供了依據The switched capaci tor filter is the counterpart of the continue time analog filter " s sampling, it is more adapted to the miniaturization of the circuit and can realize the higher accuracy transfer function, especially the design of the cmos integrated sc filter based on the biquad have advantage of high accuracy, small area, low power consumption, simple architecture and easy to debug. it has important academic and practical means of the sc filter " s research and design
開關電容濾波器是連續時間模擬濾波器的采樣時間等效電路,更適合電路的小型化,同時也實現高精度的傳輸函數,尤其是基於雙二階的cmos開關電容濾波器設計具有高精度、面積小、低功耗和電路結構簡單,易於調試等優點,所以研究和設計開關電容濾波器有著重要的理論和實際意義。At first some modification is made in conventional beam forming of frequency domain, namely to estimate doa by arrays outputs on compensated spacial frequency points of echoes. then the cwt is utilized to signal processing in space - frequency domain for estimation of doa, and the corresponding modification is also made. in the dissertation, the computer simulations of doa estimation for both narrow - band and wide - band echoes are given, so do the necessary comparison among several methods and crb
首先在傳統的頻域波束形成演算法的基礎上,提出對寬帶信號的頻率補償,也即對寬帶回波信號的各空間頻率根據時間頻率的差異進行相應補償,然後對各陣元輸出求和來得到方位估計;其次將連續小波變換引入到空間?頻率處理中,從而完成對目標方位的估計,並進行了相應地補償。Traditional laser iff has poor security because of low frequency of laser beam coded pulse. this can be greatly improved when the pulses are modulated by continuous wave laser, but the power of this laser beam output is so low that it ’ s difficult to be detected and received by laser warning subsystem
傳統的激光敵我識別器激光編碼脈沖頻率低,通信保密性差,使用連續波激光器經調制后激光編碼脈沖頻率高,保密性好,但輸出激光功率較低,難以達到激光告警分機探測接收的要求。In a tdma network, multiple users share the common medium ( or channel ) and bandwidth but different intervals of time. in case of the burst mode, the carrier of the modulated signal needs to be synchronized in a very short time. the common approaches such as a costas - loop and so on are no longer suitable any more
在一個時分多址( tdma )通信網路中,多個用戶通過不同的時間段共享一個傳輸線路(或者通道)的帶寬資源,每個用戶只能在分配給自己的時間段內進行通信,這種突發方式信號的解調要求載波恢復要在很短的時間內完成,我們以往在連續信號解調器中採用的costas環等方法很難適應這種要求。In the traditional wavelet transform, because the wavelet filter and coefficient is fixed, as a result, when the discontinuous signal is analyzed, it will produce a lot of big wavelet coefficients in the transition, which makes against the compression. in the image processing, some image is roughness, and it may has sharp edges and oddity parts
由於傳統小波變換的濾波器長度和系數是固定不變的,不能適應輸入信號而變化,這使得在分析非連續信號時,在躍變點兩側會產生大的小波系數;對具有尖銳邊緣、分段光滑或奇異點、圖文混合圖像處理效果很差。The fourth, the power capacity and the special harmfulness of ghost mode resonance when a cylindrical box type window is used to transmit high power cw are studied in detail. the existing formula for calculating the average transmitting power capacity of cylindrical te11 mode box type window is revised and a formula for three dimensions simulation computation of the temperature increment of the dielectric disk in cylindrical te11 mode box type window is deduced
第四,對圓柱盒型窗用於傳輸高功率連續波時的功率容限和鬼模振蕩的特殊危害性等問題進行了深入的研究,修正了現有的圓柱te _ ( 11 )模盒型窗的平均傳輸功率容限的計算公式,並推導出了可用於三維模擬計算的圓柱te _ ( 11 )模盒型窗中介質窗片溫升量的計算公式。Using fiber grating to substitute traditional wavelength - selecting components, the 8nm tuning range is realized at a repetition frequency of 2. 5ghz. ( 5 ). the wavelength - tuning methods of an active mode - locked fiber laser using a ld as a modulator are researched, and two tuning methods including temperature tuning
( 4 )對主動鎖模光纖激光器的波長調節技術進行了研究,用光纖光柵代替傳統的波長選擇器件實現了主動鎖模光纖激光器的波長調諧,並獲得了波長連續調諧范圍達8nm 、重復頻率2 . 5ghz的穩定的光脈沖輸出。Become a kind of new electronics circuit - current - mode circuit. it is replacing the traditional design method of the voltage - mode in the high frequency high - speed signal processing realm 。 this thesis mainly discussed the modified second - generation current conveyors based on the current - mode kinds of new cuicuit components, they are stronger modified standard current - mode parts in fuctions on this foundation. mainly including the modified differential difference current conveyor ( mddccii ) 、 the fully balanced second generation current conveyor ( fbccii ) 、 ( full balances ) four - terminal floating nullor ( fbftfn ) and the current differencing buffered amplifier ( cdba ), they are all function very strong standard current - mode parts, they all can provide some circuit functions of better than general operation amplifier, because they have the voltage importation and the current importation, therefore use it since can carry out the voltage - mode signal processing circuit expediently, can also carry out the current - mode signal processing circuit expediently, and have to increase the benefit bandwidth to accumulate more widely than the voltage - mode, but have their advantages more according to the current - mode filter of the modified current conveyor, because it constitutes in brief, the filter wave function is stronger and they are better than in general use operation amplifier of many advantages, be easy to composing for example 、 high speed 、 frequency bandwidth 、 the power supply voltage requests low 、 consume small, the impedance is different from etc. advantages, otherwise they have biggish dynamic range, and flexible circuit synthesize, so they are the best active parts
從第二代電流傳輸器ccii入手,重點研究了以下幾種改進型的第二代電流傳輸器:改進的差動差分電流傳輸器mddccii 、全平衡第二代電流傳輸器fbccii 、多輸出四端浮地零器ftfn 、全平衡四端浮地零器fbftfn 、電流差分緩沖放大器cdba的電路結構及其模型。然後在此基礎上系統地研究了基於這幾種改進型的第二代電流傳輸器的濾波器的設計方法,主要方法和結果如下:利用mddccii設計了差分式連續時間電流模式低通、帶通濾波器;電流模式跳耦結構考爾低通濾波器;利用fbccii設計了帶通二階節濾波器及電流模式雙二階通用濾波器;設計了基於多輸出端ftfn的電流模式二階通用濾波器電路;通過數字化開關選擇的基於fbftfn的電流模式通用濾波器;設計了基於最少個數電流緩沖放大器(兩個cdba )的多功能通用電流模式濾波器及其在非理想因素情況下分析。設計濾波器的主要方法是採用級聯設計、運算模擬(信號流圖法)和反饋設計(跳耦法) 。In the thesis, based on design and implementation of the two signal processing system of different requirement, multi - dsp processor structure, dsp - pci interface, system control logic, pci device driver program, user application program are researched. the main content is list as follows : 1 ) according to the lfmcw radar signal processing algorithm, a signal processing system based on pc104 - plus bus is developed
本文通過對以上兩種雷達信號處理機的設計開發過程,研究了採用多片dsp信號處理器組建并行處理模塊實現信號處理演算法的方法,利用pci總線實現處理機數據傳輸介面,設備驅動程序和控制界面軟體開發,實現信號處理機數據傳輸控制等幾個方面的內容,主要工作如下: 1 )針對線性調頻連續波雷達信號處理演算法,完成了基於pc104 - plus總線的嵌入式信號處理板的設計、製作以及調試。At the lowest level, all computer communication involves encoding data in a form of energy, and sending the energy across a transmission medium
傳輸的信號分為離散和連續兩類,可以利用電流(電壓)或電磁波參數(如振幅、頻率、相位)等物理信號的變化與檢測達到通信目的。Based on the requirement and target of the projects, firstly, pcf bragg grating are investigated theoretically and experimentally. moreover, the effects of filling high refractive index material ( nematic liquid crystal, nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ), farther, several novel pcfs are proposed and designed. lastly, we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser, which integrate all performances of broad - band tunable wavelength, uniform output power spectrum, high repeat frequency and high average power to together
本論文選題于國家973 、 863以及國家自然科學基金等項目,結合課題的要求和主要目標,在對光子晶體光纖( pcfs )傳輸特性研究的基礎上,首先對光子晶體光纖光柵進行了理論和實驗研究;然後,採用平面波展開法和有限單元法分析了在光纖的空氣孔中填充高折射率液晶對光纖傳導機制和傳輸特性的影響,提出並設計了幾種新型光子晶體光纖;最後,提出並研製成功連續可調諧、輸出功率譜均衡的全光纖化、高功率包層泵浦鉺鐿共摻光纖激光器實驗樣機。( 2 ) some studies are made for the subject of various effects on wave propagation and ground motion of multi - dry, multi - saturated, and alternate dry and saturated soil layers. a comprehensive computer program is compiled, accounting for soil dilatancy, linear and non - linear constitutive relation, rigidity degradation and suiting to any combinations of soil layers, dry and / or saturated with different thicknesses, properties, continuity conditions at interfaces, and inputs at base and top boundaries. from the numerical results obtained for a quite large number of typical cases, some knowledge of general trends of response for, especially, the cases of alternate dry and saturated soil layers are gained both quantitatively and qualitatively
( 2 )對不含水土層分層排列、飽水土層分層排列、不含水土層與飽水土層分層交錯排列情況下對波傳播和地面運動的影響做了一些研究,考慮到土壤的剪脹性、線性和非線性本構關系,剛度退化等因素,編制了可適用上述各種情況和任意多土層(包括含水或不含水、力學性質不同、厚度不同、邊界連續條件不同等) ,在不同基底輸入或上邊界輸入作用下的通用分析程序,通過對相當數量的典型情況進行的分析計算,得到了一些趨勢性的認識,特別是對飽水與不含水土層分層交錯情況,取得了一些新認識。Various turbulence conditions, ranging from weak to strong, are considered as well as the dependence on turbulence strength, propagation length, wavelength, and the inner scales of turbulence are presented
計算結果表明,相位不連續點的數目不僅與描述光強起伏量的大氣湍流強度、傳輸路徑長度和傳輸光的波長有關,而且還與湍流的內尺度有關。In chapter six, we studied the nonlinear solitary wave solution under the transverse perturbations for a system of coupled nonlinear electrical transmission lines. in the continuum limit and suitably scaled coordinates, the voltage on the system is described by a modified zakharov - kuznetsov equation
論文第六章研究了耦合非線性傳輸線系統中的孤波,在連續近似和合適的坐標系下, 11一一一一一一藕合非線性傳輸系統的電壓可以用mzk方程( 。Also discussed the methods on how to realize the cwt both in time - domain and frequency - domain and how to design the gm - c bandpass filter used in realization of cwt. in order to optimize the performance of gm - c filter, linearization techniques are investigated and proposed. due to process variation and parasitics, an automatic tuning is designed for center frequency / 0 and quality factor q also, in this thesis, 16 - channel analogue cmos cwt circuit has been realized
論文圍繞連續小波變換的模擬電路實現這一熱點問題,討論了連續小波變換的時域和頻域實現方法;具體分析了并行結構與串列結構的優缺點;研究了頻域法中的跨導-電容帶通濾波器的設計;給出了改善跨導輸入級傳輸特性的線性程度並擴大線性范圍的具體方法;設計了片內自校正(可調諧)環節使濾波器參數自動調整到設計標準值;最後給出了16通道濾波器組實現小波變換的方法。The propagation of soliton and interaction for the periodic distributed amplification line are discussed in detail, and the explicit soliton solution on continuous wave ( cw ) background is presented, and two exact analytic solutions that describe the modulation instability and the soliton propagation on a cw background are in detail discussed, and inelastic interaction for the vector solitons is also investigated
具體研究如下三個方面的內容:周期分佈放大系統中孤子的傳輸特性和相互作用;在非零邊界條件下孤子解的存在形式並解釋非均勻光纖中光脈沖的調制不穩定性以及孤子在連續波背景中的傳輸特性;討論多個光場同時在光纖中傳輸的耦合非均勻非線性薛定諤方程並詳細研究孤子間的非彈性相互作用。Meanwhile a valuable conclusion that general cylindrical box type windows with dielectric disks made of al2o3 ceramic can be used to transmit cw of higher power than 120kw and workable relative bandwidth may achieve about 14 % in l band, is made by calculated results of some typical examples
同時,通過計算一些典型的實際問題得出了一個具有重要價值的結論:在l波段,採用al _ 2o _ 3陶瓷窗片的普通圓柱盒型窗可用於傳輸120kw以上的高功率連續波,並且具有14左右的可工作相對帶寬。This paper deduces the theoretical signal model of fm - cw sar and the basal. fm - cw sar delivers and processes the signal in the frequency domain so special signal processing structure is established. furthermore, we give the imaging flow on non - ideal condition
調頻連續波合成孔徑雷達在頻域對信號進行傳輸和處理,建立了信號處理的基本框架,並給出了在非理想情況下的成像流程。分享友人