parabolic antenna 中文意思是什麼
parabolic antenna
解釋
高功率碟型天線-
Parabolic antenna in a widely used is tracking antenna area, by use the optimum design, it may produce a very narrow beam, it ' s tracking precision is high, but because it ' s beam width is very narrow, the searching target is very difficult
摘要拋物面天線是火控雷達中普遍使用的一種跟蹤天線，通過系統優化設計，可以形成很窄的波束，所以其跟蹤精度很高，因為其波束很窄，所以搜索發現目標困難。 -
While carrying out the scheme, at first, the basic theory of antenna, array antenna and electromagnetic absorption, the performance parameter of antenna and parabolic antenna are deeply researched. in conformity, the characteristic and calculation of aperture field and near - to - far - field transformation for radiation pattern are detailed analyzed. second, the factors such as, the amount of the antenna elements, mutual coupling between each element, ground and the buildings on earth ' s surface, which affect the performance of array antennas ’ resultant field are stressed discussed
在系統實現過程中，課題首先從天線、陣列天線，以及電磁場計算方法的基本理論著手，分析了天線與拋物面天線的各項性能參數，以及天線的口面場和近-遠區輻射場的特點和計算;進而，更加深入的討論和研究影響天線陣列合成場強的各項因素，包括系統所使用的天線單元個數對陣列合成場的影響、天線單元之間由於互耦造成的影響、傳播過程中地面和/或地面建築物的影響等。 -
A new waveguide made of changing a wide wall of a rectangular waveguide to a uniform curved wall is called conformal waveguide. a kind of expression of approximate solution for domain mode of the new waveguide, including symmetric, unsymmetric arc, parabolic arch, hyperbolic arch, elliptic arch, etc., is constructed by using boundary condition of mental waveguide, variational method and boundary element method. by using the equivalence principle, an approximate calculating formula for equivalent resonant conductance of a narrow longitudinal halfwavelength slot cut in the curved wall of the unsymmetric arcrectangular waveguide is derived, and the result is shown. although this solution is approximate, it can solve the problem in designing the slotted antenna of such conformal waveguide
把矩形波導一個寬面外突成均勻曲面構成的新波導統稱為共形波導.利用金屬波導邊界條件、變分法、邊界元素法構造這種新波導中主模場的一種近似解表達式，包括曲面橫截線為對稱、非對稱圓弧，拋物線弧，雙曲線弧，橢圓弧等.然後根據等效原理，推導非對稱圓弧矩形波導曲面上窄的縱向半波長縫隙的等效諧振電導的近似計算公式，給出計算曲線.這種解雖然是近似的，但卻能解決這類共形波導縫隙天線的工程設計 -
Design and analysis of a multi - beam parabolic reflector antenna
一種多波束拋物面天線的設計與分析 -
Solid parabolic satellite television dish antenna
板狀碟形衛星天線 -
Mesh parabolic satellite television dish antenna
網狀碟形衛星天線 -
In this paper, we use method of array signal processing, analyze the continuous aperture antenna, modify the parabolic antenna to a new antenna system that possess the functional of the searching and tracking
利用陣列信號處理方法，對連續口徑天線進行分析，將拋物面天線改進成為一種集搜索、跟蹤於一體的新型天線。 -
In this thesis, the overall scheme is to establish a circular array system which is formed from units of parabolic antenna. then, the resultant field will be detailed studied, in order to find out a steady - going array antenna system with the best combined efficiency
本文的主要內容是，利用拋物反射面天線組成圓形陣列，並對該天線陣列的空間合成場問題進行研究，力求在實際應用中得到穩定的、合成效率達到最優的空間合成場。 -
The deployable space structure is a new type of space architecture bome with space science and technology development in recent years. but in our country the technique in this field is somewhat weak. the deployable parabolic antenna designed and made in our lab can make a progress in this field
可展開天線結構是國際上空間航天結構中研究的一個重點和熱點，但國內在這方面的研究比較薄弱，作者本人和課題組其他成員經過幾年的研究，在這方面做出了一定的貢獻，使得國內在可展開天線這方面的技術有了很大進展。 -
A truss deployable parabolic wave antenna is introduced to show the developing procedure of large space deployable antenna
最後作為大型可展開天線的研製實例，介紹了一個構架式網狀可展開拋物面天線。 -
The distribution of pre - stress in parabolic net of astromesh deployable antenna plays an important role in design and analysis of this kind of deployable antenna, a common method to solve this problem is non - linear finite element method
環形桁架可展天線中心索網的預拉力配置問題是此類天線結構設計與分析的重點，目前，常採用的解決方法為非線性有限元平衡迭代。
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