載波加載 的英文怎麼說
中文拼音 [zǎibōjiāzǎi]
載波加載
英文
carrier loading-
The power of the modulated carrier wave is increased by the rf power amplifier
射頻功率放大器增加了調變載波的功率。It is comprised of a silicone rubber sheet, a wave - guide plate, an apparatus to apply three - axis force and facilities to capture faculae
它由一個硅橡膠墊、一個光波導路、一個三軸力加載裝置和光斑的採集設備等組成。Elliptical waveguides have found wide applications in a variety of microwave components : waveguide filters, radiators, resonators, and wide - band transmission lines, etc. periodic - loaded waveguides play very important roles in high - power microwave tubes, corrugated antennas and linear accelerators
在各種微波器件如濾波器、輻射器、諧振器和寬帶傳輸線中橢圓波導有著廣泛的應用。周期加載波導在高功率微波管、波紋喇叭和線性加速器等中起著重要作用。The travel time of lcr wave and applied stress showed well linear relationship in the qualitative and quantitative experiments, experimental result matched with the theory, achieved the anticipative requirements. these experiments validated the feasibility of evaluating the stress with lcr wave based on tdc travel time measurement preliminarily
定性實驗與定量實驗顯示， lcr波傳播聲時與加載應力具有良好的線性關系，實驗結果與理論基本相符，達到了預定要求，也初步驗證了基於tdc聲時測量的lcr波應力檢測方法的可行性。Research on x - band inner coaxial disk - loaded relativistic backward - wave oscillator
波段內同軸膜片加載相對論返波振蕩器的特性研究4. the " hot " dispersion equation of the coaxial ridge - disk - loaded cylindrical waveguide twt with an annular electron beam can be firstly obtained according to self - consistent field theory
四、引入薄環形電子注，首次建立了脊加載同軸膜片圓波導的注波互作用線性理論，得到小信號條件下的色散方程。The slow - wave characteristics neglecting and taking account of space harmonics ( sh ) for periodically iris - loaded confocal elliptical waveguides are analysed, and the dispersion equation and the mean coupling impedance of this structure are obtained by
分析了周期膜片加載共焦橢圓波導，在考慮空間諧波和不考慮空間諧波兩種情況下的慢波特性。應用場匹配方法得到這種結構的色散方程和平均耦合阻抗。In addition, these methods rarely consider the case of multi - stage preloading. several studies has been made to solve these problems : ( 1 ), an error processing is present to manage settlement data. based on fairing filtration theory, a fairing program is compiled to fair the observed data. ( 2 ), according to classical consolidation theories, an analysis model of settlement data has been built under conditions of multi - stage preloading
針對目前存在的問題，本文主要做了以下研究工作： （ 1 ）建立了沉降觀測數據誤差處理流程，並基於光順濾波理論，對沉降觀測數據進行光順處理，編制了光順程序； （ 2 ）結合經典固結理論，建立了分級加載條件下沉降數據分析模型。Abstract : based on the iterative bit - filling procedure, a computationally efficient bit and power allocation algorithm is presented. the algorithm improves the conventional bit - filling algorithms by maintaining only a subset of subcarriers for computation in each iteration, which reduces the complexity without any performance degradation. moreover, a modified algorithm with even lower complexity is developed, and equal power allocation is introduced as an initial allocation to accelerate its convergence. simulation results show that the modified algorithm achieves a considerable complexity reduction while causing only a minor drop in performance
文摘:基於迭代的比特和功率分配機制，提出了一種低復雜度的比特和功率分配演算法.與傳統的迭代分配演算法不同，該演算法在每次迭代中只需要比較幾個特定的子載波.該方法在保持傳統迭代演算法性能的前提下極大地減小了迭代分配演算法的復雜度.此外，通過選擇等功率分配方案作為初始方案加快了演算法的收斂速度，進一步降低了演算法復雜度.模擬結果表明，提出的改進演算法在基本不犧牲系統性能的前提下有效地降低了演算法復雜度High energy explosive was used to create a powerful and planar shock wave for accelerating flyer plate to high velocity, and high pressure was produced when flyer impacting with the sample. in the experiments, the impactor was brass and target was ofhc copper. by measuring the shock wave velocities of hr2 steel, high - density glass, aluminium alloy ( ly12 / lf6 ), magnesium - aluminium alloy ( mb2 ), polymethyl methacrylate and air, shock pressure and release isentrope of ofhc copper have been obtained
採用化爆加載、平面波發生器和空腔增壓技術，以黃銅為飛片，無氧銅為靶板，測量了抗氫鋼（ hr2 ） 、重玻璃（ sio _ 2 ） 、鋁合金（ ly12 lf6 ） 、鎂鋁合金（ mb2 ） 、有機玻璃（ pmma ） 、空氣（ air ）和無氧銅（ ofhccopper ）各阻抗匹配樣品中的沖擊波速度，上述材料的hugoniot狀態參數c _ 0 、均為已知，由此確定了無氧銅的沖擊加載壓力和等熵卸載后的狀態，得到了等熵卸載路徑。Study of the high frequency characteristics of ridge - loaded ring - plane twt
脊加載環板行波管高頻特性的研究As a high - power twt, we consider the relativistic effect of the solid beam. the numerical results are given in terms of the small signal gain curve and slow - wave ration curve
作為大功率的行波管，我們考慮了電子注的相對論效應，數值求解「熱」色散方程，得到脊加載盤荷波導幾何參數和電子注參量與小信號增益的關系。This project based on the research of pd radar simulator, give the mathematic model of the ground clutter and target, generate the data of them. then the data has been translated to the memory of the simulator by a pci card
本課題以某機載相控陣雷達模擬器的研製為背景，對雷達雜波和目標回波進行數學建模，產生相應的目標數據和雜波數據，並通過計算機pci總線，將生成的數據文件加載到雷達模擬器的存儲器中。For the first time, the coaxial ridge - disk - loaded cylindrical waveguide as sws is presented. its dispersion equation and the expression of coupling impedance are given by application of the field matching method. a series of numerical results show that the influence of structure dimensions on the dispersion characteristics and interaction impendance
三、創造性地提出脊加載同軸膜片圓波導慢波結構，並對其採用嚴格的場匹配法，詳細推導了色散方程和耦合阻抗表達式，並得到一系列有關系統結構參量與色散和耦合阻抗之關系的數值模擬結果。This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。According to the principle of spread spectrum communication, the anti - interference performance of the technology is discussed and the composition of power line spread spectrum communication is described. based on the spread spectrum technique, a method which is low cost, high communications quality and low bit error for power line carrier communication using single - chip software programming is proposed
利用擴頻通信原理，分析擴頻通信的抗干擾特性，在此基礎上，闡述了電力線載波通信系統的基本結構，提出了一種利用軟體編程實現電力線載波擴頻通信的方法。該方法不增加硬體成本，即能達到提高通信質量、降低誤碼率的目的。Abstract : the stimulation treatment of & quot; loosening rock by the dilatancy of explosive waves & quot; is tested in the casing well 4242 for studying its result and its influence on casing. the result of the field test shows that this test is successful in technology, the oil production of the well is 4 times as much as that of it before the test ; the deformation of casing is local, and the result of the strength calculation shows that the deformation will not destroy casing
文摘:為了研究「壓脹松動」增產技術的增產效果和對套管的影響，在延長石油管理局子長油礦對4242井進行了現場實驗.該技術採用強動載波在地層深處疊加的方法，造成壓脹條件，松動巖石，增大近井帶滲透率，提高油井產量.施工后，該井產量增加為原來的4倍多.本次實驗工藝上是成功的，首先是按設計要求引爆了炸藥，其二是由於採取了保護措施，使套管變形局限在施工段處，不影響下泵，不影響油井生產;套管強度校核分析也證明了套管不會破壞.施工后地質效果明顯Research on ridge - loaded ring - plane travelling wave tube
脊加載環板行波管的理論與實驗研究The maximum output current on a 60uh inductive load was 1660a, and the maximum peaking voltage on resistive and capacitive loads was over 100kv in our experiments
我們還利用爆炸沖擊波加載技術對pzt95 5鐵電陶瓷進行了實驗研究，在60 h的電感負載上得到1660a的脈沖電流，在電阻和電容負載上獲得100kv 、 2The calculation of dynamic response under the loading of incident pulses with different rising - time shows that the oscillation of stress wave reflects the macro - heterogeneity of laminated materials, and that the oscillation becomes more distinct as the rising - time becomes steeper. for the periodical laminate, the oscillation period of stress wave depends on the width of each cell and the width of the whole representative cell
針對兩種不同上升沿入射波加載時的計算表明，應力波的振蕩現象反映了材料的分層非均勻特性，上升沿越陡，振蕩越明顯；對于周期性分層材料，應力波的振蕩周期與各層的厚度以及周期性代表單元的總厚度是相關的。分享友人