邊緣繞射 的英文怎麼說
中文拼音 [biānyuánràoshè]
邊緣繞射
英文
edge diffraction- 邊 : 邊Ⅰ名詞1 (幾何圖形上夾成角的直線或圍成多邊形的線段) side; section 2 (邊緣) edge; margin; oute...
- 緣 : Ⅰ名詞1 (緣故) reason 2 (緣分) predestined relationship 3 (邊) edge; fringe; brink Ⅱ動詞(攀...
- 繞 : 繞名詞1. [書面語] (彎曲) bend2. (姓氏) a surname
- 射 : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
- 邊緣 : 1 (沿邊的部分) border; edge; fringe; margin; rim; limb; skirt; verge; brink; periphery 2 (靠近...
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In order to obtain the complex rcs of the target quickly in high frequency band, the graphical electromagnetic computing software, greco, is used. the modification of the computing kernel code is presented. the judgement of edges of complex targets is more sufficient and the computation of edge wave based on physical theory of diffraction ( ptd ) is more exact after the modification
為了可以準確地預估雷達目標的rcs ,我們對于航天部207所的圖形電磁計算軟體( greco )進行了進一步的開發與包裝,用borland公司的c + + builder開發了更加易於使用的基於windows操作系統的新版greco ,並且在考察了原有的greco計算內核之後,結合計算機圖形學方面的理論,對greco的內核代碼進行了改進,整體上使得邊緣繞射場的計算結果更加準確。An electron beam does not diffract at atomic scales, so it does not cause blurring of the edges of features
由於電子束在原子尺度不會繞射,所以它不會使得圖案細節的邊緣模糊。Electromagnetic simulation computation uses three principal scattering mechanisms, including facet contribution, edge diffraction and multi - scattering
本文採用了鏡面反射、邊緣繞射以及多次反射這三種主要的散射源。Incremental length diffraction coefficients ( ildc ) is adopted to calculate the contribution of edge diffraction. in order to improve the accuracy of calculation, multi - scattering is discussed, based on the two former contributions and ray - tracing method. geometrical optics ( go ) and physical optics ( po ) are used to calculate the multi - reflection between facets and facets
對于鏡面反射採用物理光學法計算其散射貢獻,結合基於面元的目標模型的表示,採用離散的積分形式,將面電流積分化簡為線積分,簡化計算復雜度;對于邊緣繞射,運用增量長度繞射系數理論計算目標邊緣繞射場;在多次反射中,則以光線跟蹤方法為基礎,採用幾何光學、物理光學相結合的方法分析考慮多次散射場。Rcs of facets of targets coated ram was resolved by combining impedance boundary condition ( ibc ) and geometric optics ( go ) and rcs of those edges were approximated by computing the rcs of edges of impedance wedge through method of equivalent currents
其中,塗覆目標面元的散射場是通過結合阻抗邊界條件和幾何光學法( go )而得到;而塗覆目標棱邊的散射場則是通過等效電磁流法求解阻抗劈的邊緣繞射場近似得到的。An idea to establish a cancellation database on the basis of the smooth of rcs of the protected target is also introduced the field scattered by facets and fringes and the multiple scattering effect are calculated by a hybridization of the theory of physical optics, equivalent currents and areal projection - physical optics, which are utilized to compute the rcs of an aeroplane
還提出了根據被保護目標rcs的平滑值確定對消數據庫的思想。應用物理光學法、等效電磁流法和區域投影物理光學方法計算了面元散射場、劈邊緣繞射場以及多次散射場,採用此方法計算了某飛機的rcs ,並對該目標的rcs進行了平滑處理。The fluffy crescent - shaped x - ray features that appear around the edge of the remnant are thought to be fragments of high - speed matter shot out from the star when it exploded, like shrapnel from a bomb
射線下,環繞遺跡邊緣的蓬鬆新月狀結構據信是恆星爆發時高速拋出的物質的殘留,類似於炸彈的彈片。分享友人