波前矩陣 的英文怎麼說

中文拼音 [bōqiánjǔzhèn]
波前矩陣 英文
wavefront array
  • 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...
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 矩 : 名詞1. （畫直角或正方形、矩形用的曲尺） carpenter's square; square2. （法度; 規則） rules; regulations 3. [物理學] moment
  • 陣 : Ⅰ名詞1 （作戰隊伍的行列或組合方式） battle array [formation]: 布陣 deploy the troops in battle fo...
  • 矩陣 : [數學] matrix; array
  1. In the first part, the basic knowledge of particle scattering in meteorology and physics was introduced. the particles to be discussed include aerosol particles, fog droplets and raindrops and the em wave band in the discussion is near - infrared. in the second part, the mie theory was briefly reviewed and was applied to investigate the scattering characteristics of spherical atmospheric particles, the result shows that in the visibility measurement meter using forward - scattering method, when the working wavelegth is between 0. 8 m ~ 2 m, the scattering angle is between 25 ~ 40, the distinguishability and the relative scattering intensity would be better than those under other conditions. in the third part, the superellipsoid was used to describe a wide range of shapes such as spheres. ellipsoids and cylinders. an improved t - matrix method which can be used to calculate arbitry shaped particle ' s scattering field was introduced, and the scattering characteristics of non - spherical atmospheric particles was investigated with this method

    計算結果表明，從相對散射強度、同一方向上不同粒子散射的可區分程度來看，在散射式能見度探測儀器中，工作波長介於0 . 86 m 2 m ，探測角度選取前向25度40度時，探測的結果將會是比較理想的。第三部分中，使用超橢球方程來統一描述各種非球形粒子的形狀，然後使用t矩陣方法計算了一些形狀的非球形粒子的近紅外散射特性。另外，在本文中還針對球形粒子的散射場提供了一種三維可視化方法，使對散射場強度的空間分佈的理解更加簡單，直觀。
  2. Two spherical waves and multiple spherical waves interference, and yang ' s interference experiments are simulated by using different methods. two spherical waves interference is focused on the on - plane or out - plane of the spot light source plane and the observing plane. then, we analyze how the temporal coherence of optical waves influence the contrast of the interference pattern

    用光波波前疊加的方法實現了對兩列球面波干涉、多光束干涉等實驗的模擬；用傳播矩陣描述衍射光波波前傳播的方法對楊氏雙縫和雙孔干涉實驗進行了模擬，並具體詳細地分析了單縫衍射對雙縫干涉的影響；另外還分析了光場的時間相干性對干涉條紋反襯度的影響。
  3. Then, sage adaptive filtering usually used in kinematic gps navigation and positioning and its shorcoming are analyzed. the weights of measurement residuals and state correction residuals are modified according to the self - correlation property of colored noise and robust estimation. the procedure of weighte d prediction of covariace matrix not only resists the influence of outlying kinematic model errors, but also controls the effects of measurement outliers

    然後，分析了目前常用於有色噪聲處理的sage自適應濾波及其在動態gps導航定位應用中的缺陷，並依據有色噪聲的自相關特性和抗差估計調整觀測殘差和狀態改正數的權比，再通過加權預報控制殘留在其中的異常對協方差矩陣自適應估計的影響。
  4. The concept of otn node transmission model is introduced. the requirement of otn node transmission model is discussed. this model uses the frequency domain transmission matrix to express the otn node transport characteristics. the simplified model based on wdm and im - dd systems, the relationship between node characteristics and model parameters and measurement of model parameters are also discussed. at last a briefly discussion on how to develop the otn simulation and cad software based on our model is demonstrated

    在線性時不變的假設下，提出利用頻域傳輸矩陣來表示節點傳輸特性的方法給出了oxc和oadm兩類光傳送網節點的統一的表示根據目前通用的波分復用強度調制直接檢波系統的特點對復雜的頻域傳輸矩陣進行了簡化並對通常所關心的節點主要性能指標與模型參數的關系模型參數的測量和計算模型的設計與計算機模擬輔助設計軟體開發的銜接問題進行了討論。
  5. After that, this thesis analyzes the influence of the internal main factors and the external main factors based on ahp method, so that we can appraise the internal and external condition of the development of the container transportation service function and the key factors by means of setting external factor evaluation matrix, internal factor evaluation matrix. and then the author analyzes the feasibility of development of the container transportation service function, concluding ningbo port has already possessed the ideal infrastructure

    隨后應用層次分析法分別分析了內部主要因素和外部主要因素對寧波港拓展物流服務功能的影響程度，通過內部因素評價（ efe ）矩陣和外部因素評價（ ife ）矩陣評價寧波港拓展集裝箱服務功能體的內部條件、外部環境及影響因素中比較關鍵的因素，在此基礎上進行寧波港拓展集裝箱運輸服務功能的可行性分析，並得出目前寧波港拓展集裝箱物流服務功能已具備良好的硬體條件。
  6. Chapter 2 : using a so - called variance matrix, we studied the propagation and the focusing characteristics of the paraxial light beams. the quantities characterizing the gross features for a paraxial optical beam, such as the beam width, the divergence, the curvature radius of the wavefront, the complex beam parameter q. and the beam quality factor, are related by using variance matrix

    第二章：闡述了常數折射率介質中光束的傳輸和聚焦，建立了表徵傍軸光束總的特徵的量，如：束寬、衍射發散角、波前曲率半徑、復光束參數q與變換矩陣的關系，得到了光束質量因子和變換矩陣行列式的定量關系。
  7. Because of the difficulty to calculate the wave function and transitive matrix element in high excited state, chaotic character of wave function is known a little. now many pay attention to the scar of wave function ; ( 3 ) the time evolutionary character of nonstationary state eigenfuction

    由於計算高激發態波函數以及躍遷矩陣元的困難，人們對經典混沌給波函數帶來的特徵的研究工作還很少，目前研究最多的是關于波函數的疤痕。
  8. But, though considerable process has been made in the last ten years, digital watermarking is still in its infancy, and much interesting work remains to be done this thesis addresses some problems in the gray - scale image digital watermarking that are summarized below : 1 ) whereas the basic theory of digital watermarking is still very poor, a digital watermarking mathematic model based on imperceptibility and robustness is presented by analysising the characteristic of digital watermarking ; 2 ) based on the model constructed above, by defining the measures of capacity and robustness of digital watermarking, an objective method for evaluating the digital watermarking is introduced and used to analysis some algorithms ; 3 ) whereas geometric distortion always influences the restoration of watermark, we advocate to enhance the robustness against geometric distortion by restoring the image which has been distorted by geometric transformation, and a method is designed for estimating the parameters of geometric transformation ; 4 ) based on the conclusion discussed above, and combined with the masking effects of hvs, a novel public meaningful gray - scale image digital watermarking is designed by analysising the characteristics of image gray - scale interpolation and haar wavelet transformation. the experimental results show that the method is indeed powerful ; 5 ) whereas many image digital watermarking schemes, which embed watermark by modifying the values of pixels in spatial domain and transformed domain, are confronted with the conflict between the imperceptibility and robustness, we advocated to use some stable digital characteristics of host image as watermark and a algorithm based on hermite matrix is designed

    本文重點對灰度圖象數字水印技術進行研究，主要工作如下： 1 ）鑒于目前數字水印的理論研究比較薄弱的現狀，本文通過分析數字水印的特點，建立了一個數字水印的數學模型，為進一步研究數字水印打下了基礎； 2 ）根據以上建立的模型，通過引入容量和穩健度的概念為數字水印提供了一個客觀評價方法，並對一些數字水印演算法進行了分析； 3 ）為增強數字水印抵抗幾何攻擊的能力，研究了受幾何攻擊的圖象的復原問題，並給出了一個計算圖象幾何變換參數的方法； 4 ）通過分析圖象灰度插值演算法和haar小波變換的特點，結合hvs的掩蔽效應，設計了一個公開的有意義數字水印演算法，實驗結果表明本演算法具有較強的穩健性； 5 ）目前許多水印演算法都是通過在空域或頻域修改象素值的方法嵌入水印的，這種方法面臨著透明性和穩健性的矛盾，為解決這個矛盾，本文提出以圖象的某些穩定的數字特徵為水印的觀點，並結合hermite矩陣的特點設計了相應的水印演算法，實驗結果表明該演算法具有較好的穩健性。
  9. The fft of helmholtz equation on the regular domain is studied. and the multifrontal algorithm is used to solve the matrix equations in computational electromagnetics. finally, the finite - difference approximate forms of maxwell equations and the despres transmission condition are discussed

    為了充分提高演算法的計算效率，研究了規則區域上helmholtz方程的fft快速演算法，以及有效地將多波前演算法引入計算電磁學領域用於求解差分稀疏矩陣方程。
  10. Contrasting the requirement to electric - supply enterprises from electric market, it analyses the spatial difference of yueyang electricity bureau, then take the strategic choice according to the analysis outcome above, the swot strategic choice graph and the improved bcg. the choice is that this company should take an expansionist strategy, that is, it should effectually use all kinds of environmental force and call up its own resource and energy to occupy more power market ahead of the arrival of competitor under the environment that power market reform does not fully implement and market competition will soon be fierce

    接著，對岳陽電業局所面臨的外部環境的機會和威脅和所擁有的內部資源和能力的優勢和劣勢做了詳細的分析，同時對照電力市場對供電企業的要求，分析了岳陽電業局存在的差距。並依據以上分析結果，利用swot戰略選擇圖和改進波士頓矩陣進行了戰略選擇，認為該企業應採取發展型戰略，在當前電力市場改革未完全到位和能源市場競爭將趨激烈的環境因素下，應有效藉助各種環境力量，有效組合自身資源能力，趕在競爭對手進入之前盡快強占更多能源市場。
  11. Some modeling of maneuvering target tracking is introduced in this thesis, and current statistical model is used as a basic target model. the arithmetic of kalman filtering based on the model is listed. on the foundation of state vector optimal estimation error matrix theory, the arithmetic of optimal estimation is presented, and target tracking simulation is taken

    本文首先介紹了幾種常用的機動目標跟蹤模型，並把現在較為常用的「當前」統計模型作為本文研究的目標模型，並列出了基於該模型下的卡爾曼濾波演算法;此外，在狀態矢量最優加權估計理論的基礎上，引入了目標狀態最優估計誤差協方差矩陣，提出了一種最優加權估計演算法，並進行了目標跟蹤模擬。
  12. For the advantages and simplicity of lmi toolbox in resolving control problems currently, the chapter 3 of this paper introduces some basic concepts about linear matrix inequalities ( lmis ). three solvers of lmi toolbox of the software matlab is also presented. a review on the theory and application research for lmi in control systems is described in detail, mainly including robust control and robust filtering of uncertain systems

    本文第三章詳細介紹了線性矩陣不等式的基本概念和用於求解線性矩陣不等式的軟體工具箱matlablmi的三個求解器，對線性矩陣不等式在控制系統中的應用作了詳細的綜述，主要分析了其在當前的兩個研究熱點即不確定系統的魯棒控制與魯棒濾波中的運用。
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