plane domain 中文意思是什麼

plane domain 解釋
平面域
  • plane : n 懸鈴木屬樹木。n 1 平面，水平面，面。2 （知識等的）發達程度，水平，階段。3 【航空】機翼面；〈常 ...
  • domain : n 1 領土，版圖；領地。2 管區，勢力圈；（特定動物等的）生長圈；（學問、活動等的）領域，范圍；【物...
  1. This article discussed ar modeling method, capon method, music method and mn method four kinds of high resolution algorithms principle and has separately made the computer simulation in the ideal situation to the above four algorithms. through the comparison, the beam width of high resolution algorithm is much narrower than conventional beamforming method. then unifies the actual utilization, discussed the influence of time delay unbalance, time domain sampling, plane wave supposition and array element with scope and phase not identically to the beamforming and made the computer simulation

    本文首先討論了ar模型法、 capon法、 music法和mn法四種高解析度演算法的原理，在理想的情況下分別對上述四種演算法作了計算機模擬，通過比較，高解析度演算法的束寬比常規波束形成法窄得多;然後結合實際運用時的情況，重點探討了延時失配、時域抽樣、平面波假設和基陣的幅相不一致對波束形成的影響並做了計算機模擬。
  2. 4. with visco - elastic boundary of soil considered, the eigenvalue equation in frequency domain of soil dynamic equilibrium equation falls into a complex transcendental equation. in course of seeking its solution, based on argument principle and contour integral, with the aid of matlab, two numerical algorithm combined with the corresponding procedures for solving transcendental equations in a complex plane is developed by the author

    4 、由於考慮了土體的粘彈性支承邊界條件，使得其動力平衡方程在頻域內的固有值方程為一復數超越方程，為了求解該方程，筆者基於幅角原理和閉合曲線積分，結合matlab ，提出了復平面上超越方程的兩種數值解法，並編制了相應的程序。
  3. The experiment shows mbid can produce the enhanced pressure field at hydrophone array, provide modal domain representation of pressure ( modal functions and horizontal wavenumbers ) and target ' s bearing ( plane waves ), and have good adaptive ability and robustness against mismatch

    實驗數據和模擬數據的結合驗證了模基辨識器不僅能夠產生增強的水聽器陣處的聲壓場表示，而且能夠輸出模域表示（模深度函數和水平波數）和目標的方位（平面波模型） ，也具有較好的自適應性及對失配的寬容性。
  4. Experiments show that, when use msp430f149 audio sensor to identify vehicles that contain plane, tank, truck and so on by time domain features and two - level f - ratio, the recognition rate is 82. 1 % ; when use both msp430f149 audio sensor and arm9 sensor to identify vehicles, and the recognition rate is much better than the original system and msp430f149 audio sensor. line spectrum of power spectra and 3 / 2 spectrum is used as frequency features on arm9 sensor, and it is caught by narrow - band bandpass filter

    實驗證明，在主頻為8mhz的msp430f149感知器上，採用基於時域特徵和二階f比的識別演算法，能夠實時地完成對飛機、坦克、卡車等交通工具的識別;將msp430f149感知器與基於arm9的高端感知器配合使用，且高端感知器採用功率譜線譜或3 / 2維譜線譜作為頻域識別特徵，能夠實時的對各類交通工具做更高性能的識別。
  5. An integral property and its physical significance of difinite integral, double & triple integral, curve and curved surface integral of generalized odd and even functions are demonstrated, which are symmetrical about plane, line and point in the domain

    論述了關于面、線、點對稱的區域上的廣義奇、偶函數的定積分、二重、三重積分、曲線、曲面積分的一個性質及其物理意義。
  6. On computational methods in photonic crystal finite difference time domain method ( fdtd ) and plane wave expansion method ( pwe ) are widely used in calculation the dispersion relation of the photonic crystals

    光子晶體計算方法的研究用於計算光子晶體的計算方法中，有限時域差分方法（ fdtd ）和平面波展開方法被廣泛使用，我對這兩種方法都有所研究，也有所突破創新。
  7. The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system

    本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。
  8. 3. by comparing the available theories corresponding to plane strain model and winkler model with the solutions developed in this paper, the applicability of the two models is analyzed and checked. the comparison involves many aspects such as local soil stiffness, dynamic stiffness and time domain response at the pile head, and some important conclusions are made

    3 、將基於平面應變簡化假定和winkler模型的樁振動理論解與本文嚴格理論解對比，分析校驗了平面應變簡化假定和winkler模型在樁基振動理論應用中的適用性，具體比較范圍涉及土層對樁的局部復阻抗、樁頂幅頻響應、速度導納、樁頂復剛度、樁頂時域響應等方面，並得到若干重要結論。
  9. The beam width is stretched. the algorithm performance has the very big weaken. but the convention beamforming algorithm performance is stabler, time delay unbalance, time domain sampling, plane wave supposition and array element the influence which creates to it is not big

    通過比較，高解析度演算法在考慮上述情況后，波束方向出現偏差，束寬被展寬，幅度有很大的衰減，性能明顯下降;而常規波束形成演算法的性能較穩定，延時失配、時域抽樣、平面波假設和基陣的幅相不一致對其造成的影響不大。
  10. For the long - span structure, artificial excitation has many abuses. so develop the method of time plane parameter identification has a great project meaning. eigensystem realization algorithm ( era ) is a excellent time domain method

    特徵系統實現演算法（ era ） ，是一種比較優秀的時域識別演算法，已有研究結果表明，該方法在進行結構參數識別時是穩定可靠的。
  11. This paper presents our global approach to model tree - trunk scattering at vhf / uhf. in this approach, we consider plane wave scattering ( in time domain ) from the tree trunks above the soil

    在vhf uhf低頻段，由於樹冠對入射脈沖波近似「透明」 ，因此樹散射的物理模型被簡化為樹干散射的物理模型。
  12. It was shown that the value of the in - plane was different at r _ ( iid ) = 0 when the mbds in the compressed state was softened. the value of the in - plane was decreasing at r _ ( iid ) = 0 with the increase of the static bias fields, thus it is proved that vbl in the walls of mbd is irregular and there exists a direction along which the vbl in the domain walls annihilate most easily

    隨著產生枝狀疇時的直流偏場的增加，枝狀疇在r _ （ iid ） = 0時所對應的面內場值是逐漸減小的，證明了枝狀疇疇壁中的vbl是隨幾分佈的，也從另外一個角度證明了在面內場作用下vbl的消失存在一個最易方向。
  13. The green ' s function for point - source excitation is also very simple in homogeneous media. however, since global basic functions like plane waves occupy the entire domain and point source excitation radiates to all directions, their evolution through a non - homogeneous medium constitutes a problem that may become at least as difficult to solve as that of the propagation of the total field

    例如dirac函數（點源）在空間域可以有精確的定位，但在傳播方向上（波數域）卻毫無確定性；而平面波（波數域的基本解）則具有精確的傳播方向，但其波前卻是無限延伸的，不具任何空間局域性。
  14. ( 1 ) basic mathematical model for recording and numerical reconstruction of digital hologram is elaborated. the core of digital holography is the algorithm of numerical reconstruction. two different approaches for numerical reconstruction of digitally sampled holograms are investigated, namely the fresnel transform algorithm and the frequency domain algorithm, which are deduced from the diffraction theory of spherical wave and plane wave respectively

    （ 1 ）從理論上詳細闡述了數字全息圖記錄與再現的基本原理，建立了數字全息圖記錄和數值再現的數學模型，根據光波衍射的球面波和平面波理論，給出兩種不同的數值再現思路，即頻域再現法和菲涅耳變換法。
  15. A hiding information algorithm of adaptive multiple plane - bit based on space domain was proposed, which has low computing complexity and large hidden information capacity

    摘要提出了一種基於空間域的自適應多平面位的信息隱藏演算法，該演算法計算復雜度低，信息隱藏量大。
  16. Abstract : the steady temperature field in irregular plane domain with radiation heat exchange boundary is analyzed by the boundary, discrete method, and the solution in form of series is obtained

    文摘:採用邊界離散方法對具有輻射換熱邊界的平面非規則域內穩態溫度場進行了分析，得到了級數形式的解。
  17. " modulation domain " ( mod ) is a plane domain which is consisted of frequency and time of signals. it is a necessary field to measure signals in three - dimension space of signal ( time domain, frequency domain and modulation domain )

    調制域是由信號的時間和頻率兩個軸構成的平面域，是對信號進行三維（時域、頻域、調制域）測量不可缺少的一個測試域。
  18. It ' s a problem of great significance how to filtering a signal in joint time - frequency domain and reconstruct the time series from the time - frequency plane selected. in this thesis, the theory of joint time - frequency analysis and synthesis and time - frequency filtering is investigated. two kinds of new time - frequency domain filtering methods are proposed based on adaptive decomposition and linear subspace projection

    本文在系統學習現有的各種時頻分析及其綜合演算法的基礎上，詳細研究了時頻域濾波的核心思想和基本方法，吸取了自適應時頻分析和線性子空間投影wigner - ville變換的優點，提出了的兩種新的時頻域濾波方法，並通過理論分析和數字模擬完成了相應的數值特性與應用特性研究。
  19. Website construction, domain name registration, virtual mainframe, enterprise post - office, plan for online marketing, website popularization, website optimization, change of website version, website maintenance, plane design and multi - media production

    網站建設、域名注冊、虛擬主機、企業郵局、網路營銷策劃、網站推廣、網站優化、網站改版、網站維護、平面設計、多媒體製作等。
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