空間天線 的英文怎麼說

中文拼音 [kōngjiāntiānxiàn]
空間天線 英文
space antenna
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 空間 : space; enclosure; room; blank; interspace
  1. However, up to today with the development of social industrialization, especially the advance of building and building technology, the successive appearance of land three - dimensional usage such as high building, overhead railway, underground railway, air corridor, underground market, the wire of high voltage and last sewer etc., at the same time, many problems produced by the ownership and the usage of land space also have been put forward

    土地所有權的行使及於土地的上下，土地所有權的效力「上達天宇，下及地心」 。然而，時至今日，隨著社會工業化的發展，特別是現代化土木、建築技術的進步，高樓大廈、高架鐵路、地下鐵道、空中走廊、地下商場、高壓電線、上下水道等土地立體化利用情形陸續出現，同時，因對土地空間所有和利用所產生的諸多問題也開始被提出。
  2. The space between the rumpled sail and the boom on a hand - built kabang boat reveals a slice of sea and sky ? and other members of the flotilla ? in myanmar ' s mergui archipelago in the andaman sea

    在位於安達曼海的緬甸丹老群島，在一艘手工製造的卡邦船上，從起皺的船帆和吊桿之間的空間可看到一線大海和天空，還有船隊的其他成員。
  3. Space inflatable structures, which has some prominent advantages in space exploration, such as small launched volume and mass, high dependability of deployment, can be used to build large space antenna, solar sail, and other large space structures

    空間充氣展開結構具有重量輕、折疊體積小等顯著優點，在大型空間結構如大型空間天線、太陽帆板等領域有廣闊的應用前景。
  4. In this paper, the finite - element numerical analysis calculation is applied to the foundation of high - rise and multi - floor building and the evolvement law of stress and displacement of tunnel used by urban traffic to explore the mutual influence between the wall rock of underground space and high - rise building foundation, taking account of the specific construction situation in the " sanmu garden " project in dadukou district in chongqing, from the perspective of underground space static - force structure stability analysis to open a underground tunnel with 6m in span and 7. 5m in height for track traffic 20m below the surface. this paper, taking considerations of three different states, i. e. the natural state without any artificial interference, the state of high - rise buildings on the surface, and the underground tunnel state with excavation for track traffic, and four plane lines and four vertical lines, analyzes and studies the distributing law of stress and displacement of calculation section from the following aspects : ( 1 ) the main stress vectorgraph, displacement distribution graph ( ux, uy ) and chromatogram graph of stress isoline ( 1, 2, xy ) of section under different states ; ( 2 ) the contrastive distribution curve of stress ( 1, 2, xy ) of different plane and vertical lines under the same state ; ( 3 ) the contrastive distribution curve of stress ( 1, 2, xy ) of the same plane and vertical lines under different states, wishing to provide references for underground space utilization and project designing and construction of the tunnel under high - rise buildings in the future

    本文結合重慶市大渡口區「三木花園」開發建設項目，從地下空間靜力結構穩定性分析角度出發，針對在該項目中涉及的高層和多層建築物以及在其地下20米處開挖了一個用於軌道交通的跨度6米，高7 . 5米的地下隧道這一具體工程情況，採用2d - 3d -有限元結構分析程序對高層與多層建築物的地基基礎及其與城市軌道交通使用的地下隧道圍巖的應力與位移演變規律進行了有限元數值分析計算，探索了地下空間圍巖與高層或多層建築物地基基礎之間的相互影響，通過考慮未受到任何人為擾動影響的天然狀態、地表存在多層或高層建築物狀態和地下開挖用於軌道交通的地下隧道狀態等三種不同狀態以及4個水平剖線和4個垂直剖線等不同情況，從以下幾個方面具體分析研究了計算斷面的應力與位移分佈規律： （ 1 ）在各種不同狀態下計算斷面的主應力矢量圖、位移分布圖（ ux 、 uy ）以及應力等值線色譜圖（ _ 1 、 _ 2 、 _ （ xy ） ）等； （ 2 ）相同狀態下不同水平與垂直剖線的應力_ 1 、 _ 2和_ （ xy ）對比分佈曲線； （ 3 ）不同狀態下相同水平或垂直剖線的應力_ 1 、 _ 2和_ （ xy ）的對比分佈曲線等，為今後在對地下空間的開發利用以及在高層建築物地下開挖硐室時的工程設計和工程施工提供參考依據。
  5. The characters of this antenna lie in three points : using yagi - uda antenna to obtain antenna gain through the radial direction ; making full use of the space of the base station along the z - axis direction to get array gain ; arranging the antenna array properly to achieve pattern diversity in azimuth plane

    其特點集中體現在三個方面:在天線徑向通過八木天線的形式獲得增益;充分利用基站空間在z向組成陣列獲取陣列增益;利用開關八木天線方向圖可重構的特性，通過合理的布局，在方位面內實現角度分集。
  6. Detailed work include : generalizing, analyzing, mathematically calculating, im - proving and estimating by experiments the 2d - doa estimation from the classical al - gorithm of 1 - d subspace. moreover, application and simulation of the properties of the cyclostationary of signals in parameter estimation within smart antennas area are studied as well

    具體工作包括：經典一維子空間演算法推廣到二維中的分析，演算，改進，實驗模擬；以及信號平穩特性在智能天線參數估計中的應用和實驗模擬。
  7. In this thesis, the concept of " fractal " and the recursive algorithm of fractal structure are depicted. the wavelength - independent character of archimedean spiral antenna and the space filled property of koch monopole are analyzed by the method of moment

    本文介紹了分形的基本概念和分形結構的迭代演算法，採用矩量法分析了阿基米德螺旋天線的頻率無關特性和koch單極天線的空間填充特性。
  8. This paper begins with an overview of the fundamentals of adaptive antennas. the correspondence between a spatial filter and the fir filter is illustrated, and the spatial filter characteristic of adaptive antennas is investigated by dmi and ls - drmtcma algorithms. the discrete - time transmission model of synchronous cdma systems with antenna arrays is also developed

    本文首先對自適應天線的基本原理進行了簡要介紹，建立了陣列接收的同步cdma系統離散時間傳播模型，並論述了空域濾波和時域fir濾波器的類比性，用dmi和ls ? drmtcam演算法模擬了自適應天線空間濾波性能。
  9. It divides the specific shapes of city space into streets, water systems, city skyline and corridors of sight lines. it also aims at the special landscape of hilly cities and analyzes their characteristics from macro and micro angles. at the same time, it explores some specific treatment principles and design methods, in hopes that it could provide useful references for the landscape constructions of china ' s hilly cities

    本文主要是從城市景觀的角度，把在山地城市的景觀構成中占重要地位的線形景觀作為主要的研究對象，並根據城市空間的具體形態，將其分為街道、水系、城市天際線和視線走廊等幾個部分，針對山地城市特殊的地形條件，從宏觀、中觀、微觀等角度，分析它們各自的景觀特點，並結合大量實例探討了一些具體的處理原則和設計方法，以期對我國山地城市的景觀建設提供有益的參考。
  10. Second, we compute the self - impedance through cavity modal theory and mutual impendance based on reaction theory respectively. then the generalized impedance matrix that reflects the effect of mutual coupling is formed. at last, the effect of mutual coupli ng on 2 - d doa estimation algorithms is investigated and two efficient methods of mutual coupling compensation are proposed

    本文首先對兩種二維doa估計演算法? ssm法和二維酉esprit法的性能進行了比較，用空域平滑演算法解決了相干源的二維doa估計；其次運用腔模理論計算微帶天線的自阻抗，用反應原理計算微帶天線間的互阻抗，進而形成計入互耦影響的廣義阻抗矩陣；討論了互耦對二維doa估計的影響，提出了兩種互耦補償的方法。
  11. Kapton is used extensively on spacecraft primarily as flexible substrates for lightweight, high - power solar arrays because of its inherent strength, temperature stability, excellent insulation properties, ultraviolet ( uv ) stability and infrared ( ir ) transparency. however, polymeric material undergoes severe degration after being exposured on atomic oxygen ( ao ) in low earth oribit ( leo )

    聚合物kapton由於具有較高的比強度，優越的熱穩定性、絕緣性、紫外線輻射穩定性及紅外線穿透功能，是航天飛行器常用的材料，但由於空間環境中的原子氧對這種材料造成極大的損害，大大限制了這種材料在空間環境下服役時間。
  12. Three - dimensionally braided structural composites have distinct structure that is fully integrated, continuously spatial fiber - network impregnated with ductile material. the new innovative materials have not plies as conventional composites have, and put an end once and all to low interlaminar strength showing in laminate materials. because of their enhanced stiffness and strength in the thickness direction, near - net - shape design and manufacturing, superior damage tolerance and specified aerospace function, the braided composites are gaining more and more attention of industry and academia

    三維編織結構復合材料是完全整體、連續、多向的紡線（纖維束）的網路，充填以延性材料，這類新材料已失去通常復合材料的層合板概念，由此，層合板復合材料層間脆弱的致命弱點在編織結構復合材料中得到克服，所以編織結構復合材料具有高的強度和剛度（包括在厚度方向） ，接近實際形狀的製造，高的沖擊韌性、高的損傷阻抗，和按實際設計要求的特定的航空航天方面的使用功能，因而廣泛地受到工業界和學術界的關注。
  13. The main research contents of the physical design include : presenting the domestic and international status of space weather and expanding on the need and the importance about the space weather forecast ; sorting the disastrous space weather and discussing their effects and adapted prediction methods ; analyzing the solar disturbing resources of space weather and the precursor or concomitant phenomena of solar eruption based on the newest observational results ; probing into the radiation principle of solar short - wave ray and presenting the computing methods about solar continuum and line spectrum radiation ; extrapolating physical methods of reconstructing the temperature and the emission measure of coronal plasma ; argumenting the effective observing spectrum for space weather empirical forecast and space weather numerical forecast

    物理設計的主要研究內容包括：分析目前國內國際空間天氣預報的發展現狀及開展空間天氣預報的必要性和重要性；分類討論了災害性空間天氣的種類、影響及目前國際上的預報方法：分析了空間天氣太陽擾動源及擾動源爆發的先兆現象或者伴生現象；討論了太陽短波輻射線譜和連續譜輻射強度的計算方法：推導了利用望遠鏡多波段的觀測結果反演日冕等離子體溫度、發射量等參數的物理方法：論證了開展空間天氣經驗預報和發展數值預報有效的成像譜段。
  14. A diffuse mass of interstellar dust or gas or both, visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident radiation

    星雲星際空間的塵埃或氣體或兩者共同構成的巨大天體，由其對光線的吸收和反射來決定其明亮可見或黑暗一團
  15. Phased - array radiation lobe is superposed by isometric array element with constant amplitude. using the concept of real and imaginary space, the scanning lobe is researched

    通過「實虛空間」的概念，分析了掃描中的陣列波瓣，總結給出相控陣天線的方向性系數。
  16. To meet the bandwidth requirements, a two - layer electromagnetically coupled rectangular microstrip antenna was introduced to the system. the influence of the inset position and the air thickness between the two layers on the impedance, resonant frequency, as well as the bandwidth was investigated

    為使天線達到系統要求，本文設計了兩層電磁耦合矩形微帶天線，分析了影響天線性能的微帶饋線插入深度，微帶饋線與貼片間距以及空氣層厚度這三個參數。
  17. The infrared astronomical satellite launched in 1982, followed by the infrared space observatory launched in 1995, have discovered stardust made up of minerals ranging from common rocks of silicates and carbonates, to rare stones similar to rubies and sapphires

    1982年發射的紅外線天文衛星和1995年發射的紅外線空間天文臺，發現了星塵不單蘊藏著硅酸鹽和碳酸鹽這類常見的礦物質，甚至有類似紅寶石和藍寶石的罕有礦石。
  18. With compensation of signal ’ s time delay from different radiating element by phase shifters, phased - array antenna can control array beam easily. because there are no mechanical devices for rotating beam, the phased - array antenna system can scan everywhere in beam covered areas in millisecand by stepping the phase shifters. it improves the tracking velocity of antenna towards the object, and becomes the development trends of weapon system antennas

    相控陣天線利用移相器補償信號到達輻射單元時間的差異，從而控制波束方向;天線沒有機械旋轉問題，只需改變移相器的設定值，波束便可以在毫秒級內掃描其覆蓋空域內的任何地方，提高了天線對目標的跟蹤速度，是目前武器系統天線的發展方向。
  19. In research and development of space antenna, the natural characteristic analysis and structural design optimization are very important

    在空間天線結構的研製過程中，結構固有特性分析和結構優化設計是非常重要的兩項研究工作。
  20. Natural characteristic analysis not only verifies whether the natural frequencies and mode shapes of the antenna are reasonable or not, but also is the base of the structural response analysis, fatigue resistivity computing and the other dynamics problems. the structure design of antenna is a complicated systems engineering, which is generally limited to multiple objects that influence each other, so we need to keep the balance among those objects by decision - making technology of multiple objects to ensure every target optimized

    固有特性的分析不僅能檢驗天線結構的固有頻率和振型是否合理，而且也是結構響應分析、動強度計算等其他動力學問題研究的基礎；天線的結構設計是一個復雜的系統工程，它通常受到多個目標的限制，而各目標往往是相互影響的，甚至是相互矛盾的，因此需要藉助多目標決策技術，平衡各目標，以保證空間天線最優的滿足各項設計指標。
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