scattering field 中文意思是什麼

scattering field 解釋
散布范圍
  • scattering : adj. 1. 分散在不同方向的，分散在不同范圍的。2. 廣泛擴散的。3. （選票）數量分散的，不集中的。n. 1. 散亂。2. 在媒介質中的散播。3. 【物理學】散射。adv. -ly
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  1. From the model study of the fractal random rough surface, we acquire one dimensional ? two dimensional fractal random rough surface model with fractal theory ; 2. the calculation of the scattering field of light ; the establishment of the scattering light ’ intensity model, and the number calculation of the intensity distribute ; 3. the study on the laser radar cross section of one - dimensional fractal rough surface target ; and the number calculation of the scattering intensity of two - dimensional fractal the rough surface target ; 4. through shadowing effect, we analysis light scattering characteristic of fractal rough surface

    本論文利用分形理論得到一維?二維分形隨機粗糙表面模型，研究光在一維?二維分形粗糙表面的光散射特性，主要從以下四個方面分析: 1 .自仿射分形隨機粗糙表面模型探討，採用分形理論得到一維?二維分形隨機粗糙表面模型; 2 .分形粗糙表面散射光場的計算和粗糙表面散射光強角分佈的模型建立和數值計算; 3 .一維分形粗糙表面目標的激光雷達後向散射截面lrcs研究和二維分形粗糙表面目標散射強度數值計算; 4 .引入遮蔽效應分析分形粗糙表面光散射特性。
  2. Specifically, to a test particle, its mass defect is am = m _ ( 0 ) - m, where mo and m are the mass of the particle when it is in the infinity and in the grav - itational field, respectively. to a spherical shell ( or a solid sphere ), its mass defect is am = m _ ( 0 ) - m, where mo is the total mass of the matter scattering in the infinity and m is the mass of the gravitational spherical shell ( or the gravitational sphere ) combined by the matter scattering in the infinity

    具體來說，對于試驗粒子，當它由無窮遠處運動到引力場中某點時，其質量由m _ 0變為m ，發生的質量虧損為m = m _ 0 - m ；對于球殼或固體球，當組成球殼或固體球的這些物質分散在無窮遠處時，總質量為m _ 0 ，當這些分散在無窮遠處的物質結合成球殼或固體球時，其質量變為m ，發生的質量虧損為m = m _ 0 - m 。
  3. The auditorium acoustics design of the digital conference hall is to study these absorption, reflection and scattering patterns and their impact on the interior sound field, thereby improving the design to get the best quality evaluation, preventing interference of sound and sound focusing, to the widest possible that the audience will have the best hearing enjoyment

    數字會議廳堂的音質設計是研究這些吸收、反射和散射的規律以及它們對廳內聲場的影響，從而改進設計，爭取最佳的音質評價、防止出現聲干涉和聲聚焦現象，使廳內盡可能多的聽眾得到盡可能好的聽覺享受。
  4. The method can simulate light scattering behavior on the condition of single layer and multiple layers, and preferably deals with reflection and transmission between layers, with a good agreement with literature results. 3. laser beam scattering by an object in near field is studied

    該演算法可用於模擬計算單層和多層塗層，平行平面結構和粗糙表面情況下的光散射行為，較好地處理多層塗層結構中各層間的反射和透射，模擬結果與文獻結果吻合的很好。
  5. A simulative algorithm of laser beam scattering by an object in near field is given. based on the algorithm, a simulative software is worked. and by using geometrical modeling and hiding, the received power of remote system for f16 airplane, as an example, is computed

    4 、提出激光引信目標近場散射特性模擬演算法，編制了模擬軟體，並以f16飛機為例，通過幾何建模和消隱處理，計算了目標不同姿態、不同脫靶量和不同脫靶方位角時，彈目交會過程激光引信接收系統的接收功率。
  6. 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
  7. From the fourier space k corresponding to the scattering field of the object, an imaging evaluation mechanism based on the spatial spectral coverage is proposed

    摘要從物體散射場對應的傅里葉空間出發，提出基於空間譜域分佈的成像系統定性評價體系。
  8. 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。
  9. Meanwhile the technology for separating scattering field from total field is improved in this paper, which could eliminate the calculation error and get precise scattering field

    論文還改進了時域有限差分方法中的總場散射場的分離技術，消除了原來因為分離帶來的計算誤差，提高了散射計算的精度。
  10. The rain area is regarded as a random background medium, and the scattering field and backscattering matrix of the cylinder target in rain are gained. in the coherent case, the power of cylinder target in rain and air and their optimum polarization states are studied by the three - step method

    在研究雨中目標時，本文把雨區看成隨機的背景介質，利用波傳播理論、目標的邊界條件，得出介質圓柱在雨中的散射場、後向散射矩陣，並進行了相關計算。
  11. Based on the theory of geometrical optics, the relationship between the axial force exerted on the micro - sphere particles in the mie scattering field and the main parameters of laser is calculated quantitatively when the absorption is considered. the results not only show the relationship between the axial force and some parameters, that include the absorption coefficient of microscopic particles, the laser wave - length, power and so on, but also are useful for choosing parameters in experiments

    摘要以射線光學模型為基礎，對微粒直徑遠大於激光微束的米氏粒子在考慮對光的吸收時軸向力與光源參數的關系進行了計算，計算結果給出了軸向力與微粒的吸收系數、波長、激光功率等參數的關系，為實驗中參數的選擇提供了依據。
  12. In this paper, the emphasis is the application of the fdtd arithmetic in slot ' s scattering. this method modifies incidence wave and the reflected wave from conducted plane, and that result in the fdtd scattering formulations are only about the scattering field of slot

    論文重點研究了fdtd演算法在無限大導電平面上縫隙的散射計算中的應用，該演算法對入射波和平面反射波進行了處理和修正，最終，在fdtd散射公式中只計算縫隙的散射。
  13. As one part of the work, the induced current on perfect conductor surface is computed with mom method and graphed by origin. the factors, such as choice of basis function and sliced mounts of one cell, which affect solution accuracy are summarized. all of these provide a good basis for the latter computation of array scattering field

    其中第一部分工作從電場積分方程出發，利用矩量法計算了理想導體貼片上的感應電流，進而得到平面陣列和曲面陣列的散射場，研究了陣列單元尺寸、排布形式和入射波的角度，以及曲面陣列的陣面形狀等因素對陣列散射場的影響規律。
  14. The backward scattering field of extended target is approximated as the synthesis of many strong scatter centers on target, and geometric optical method is used in establishing deterministic model of a aircraft in the paper, the model is used to evaluate the performance of frequency diversity in suppressing glint at last

    本文將復雜目標後向散射回波近似為目標上若干強散射中心回波的合成，結合幾何光學法得到了某種飛機目標的確定性模型，並用該模型評定頻率分集對角閃爍抑制的改善性能。
  15. The material ways are to model the honeycomb wall as an impredence surface, to express the infinite honeycomb by using periodic green ' s function, and using method of moment to establish the mathematic model, in applying the methods of moments, we choose the roof function as basic function and choose the razor function as test function ; by equating the incident field to sum of the scattering field and impledance field ; we will set up the integral equation for the surface current, solving it by mom equation. then gain it ' s reflected coefficient ' s numerical result. and we propose first the definition of the equivalent electromagnetic parameters and present a method to calculate them from the gained reflection coefficient

    具體方法就是將浸漬吸收劑的蜂窩壁用表面阻抗表示，將無限大的周期結構的電場用周期格林函數來表示，選取有耗蜂窩結構中具有代表性的基本計算單元應用矩量法建立數學模型，在運用矩量法時用屋頂函數作為基函數，刀片函數作為檢驗函數，根據蜂窩壁表面電場必須滿足入射電場等於散射電場和阻抗電場之和的規律，推導表面電場積分方程，求解蜂窩結構的表面電流，利用蜂窩的周期規律得到無限大均勻周期陣列的散射電場。
  16. The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target

    本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。
  17. For the scattering field caused by the finite - length conducting and permeable cylinder, the boundary condition that the normal component of electrical strength is zero in conducting medium, i. e. en = 0, was used to determine the separation constant of boundary value problem in the past

    以往含有有限長導電導磁圓柱體散射場的求解，大都根據導電媒質中電場強度法向分量為零，即e _ n = 0 ，這一邊界條件來確定邊值問題中分離常數的取值。
  18. The ratma can calculate the electromagnetic scattering of multiple cylinders, and can be used in remote sensing. in chapter 2 simply derivation of the ratma is given by the addition theorem, and the general t matrix of single cylinder is deduced. the worked out examples show th e effectiveness of the ratma in the analysis of the scattering field of single cylinder or multiple cylinders

    由於遞推t矩陣法不僅可以計算多個柱體或不同形狀柱體的散射，而且可計算遙感上三維物體的散射，在第二章中，利用加法定理，簡要地推導了遞推t矩陣法，並用解析法推出了單個圓柱體在各種情況下的t矩陣（此t矩陣對導體和介質圓柱體的散射場計算都適用） ，最後計算了單個導體圓柱和兩個不同大小介質圓柱體的散射場。
  19. As a following step, the spectral method is reviewed intensively, including how to build the spectral equation and how to use galerkin method solving the inducting current and scattering field

    然後，詳細討論了譜域方法，包括運算元方程的建立、用galerkin方法求解感應電流，求解散射場的過程。
  20. The second part of the work is to analyze the finite array with floquet mode method. the scattering field of two - dimension array is computed and the characteristic of fm is mentioned. at the end of the work, the two methods, fm and mom, are discussed respectively

    第二部分工作研究有限陣列電磁散射特性分析的fm方法，總結了fm方法分析陣列散射場的一般步驟，採用fm方法計算了二維有限陣列的散射場，與矩量法做比較，分析了fm方法的優缺點以及數值計算中的一些注意事項。
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