common antenna 中文意思是什麼
common antenna
解釋
公用天線-
This structure possesses common spectra gaps with transverse - electric surface waves and transverse - magnetic surface waves, a multiple of in phase frequency regimes to characterize magnetic resonances are also within those spectra gaps, which were detected both by measuring return loss of an antenna near the surface and by fdtd simulations
實驗和數值模擬顯示這類表面的橫電模式極化和橫磁模式極化的表面波具有多帶隙的豐富能帶結構，同時它還有多個磁性諧振頻率，實驗和理論顯示這些磁性諧振所對應的多個同位相反射區落在兩個表面波帶隙中。 -
The antenna of cerogria among species and subgenera are quite variated and can be reliably used as interspecific identification characters. 2 ) common characters of male antennae of lagriinae are : terminal antennal segment elongate, and the extent of of elongation is outstanding intergeneral identification characters
）偽葉甲亞科雄性觸角的共同特徵是端節延長，在本研究的8屬中各屬間觸角端節延長的程度及其是否穩定均存在一定的差異，在分屬時有一定實用價值。 -
The half wave dipole antenna becomes quite common where space permits
半波偶極天線半波偶極天線變得相當共同空間允許的地方。 -
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。 -
And it ' s application objects from conventional antenna entend to automobile or aircraft, etc. in the military domain, it ' s common to test missiles, aircraft, or similar weapons platforms for their radar cross - section in an attempt to reduce detectability by means of radar
它的應用范圍也從最初的天線測量，延伸到了現在的汽車、飛行器等。在軍事領域，為了降低導彈、飛行器和各種武器平臺的截獲率，需要進行雷達散射截面（ rcs ）的測量。 -
A large astromesh deployable antenna which is a project supported by state committee was designed and analyzed in this paper. the design and analysis process was described in detail. through the parallel analysis of four common type of cable - net for astromesh antenna and the parameterized analysis of every kind of structural parameter, the influence to static and dynamic characteristic of astromesh deployable antenna by the type of cable - net and every kind of structural parameter was given out
結合課題組承接的科研項目，對一大型環形桁架可展天線結構實例進行了設計與分析，對設計分析的各個環節進行了詳細的闡述，通過對該類天線四種常用索網形式的對比分析及各類結構參數的參數化分析，得出了索網形式及各類結構參數對其靜、動力特性的影響規律，對此類可展天線的設計具有指導意義。 -
Firstly, we introduce the fundament theory of digital quadrature modulation and digital filter, we also introduce the concept and the key technology of software, including smart antenna, ad, sampling, digital down sample theory. it " s very important to understand this theory. subsequently, we introduce two common designs and its supported hardware, and we also present a new design based on swr
文中首先介紹了數字信號處理技術，包括數字正交解調技術、數字濾波器的基本理論，接著介紹了軟體無線電的基本概念和關鍵技術，包括智能天線的概念、軟體無線電中的ad技術、中頻帶通采樣技術、數字下變頻技術，深入理解這些技術是實現成功方案的基礎。 -
This dissertation adopts the modularization programming method to develop the spaceborne sar system design and simulation software, which obtains the windows common interface and logical integrated structure, convenient for usage, maintenance and function extension. 2. as for the earth model and orbit model, according to the properties of spaceborne sar operation, in this dissertation, we reject the sphere earth model and circle orbit model and present a novel way to solve spaceborne geometry relations between radar and target by three ellipses, and achieve the way to determine the target position by antenna pointing direction
在地球模型和軌道模型方面，論文根據星載合成孔徑雷達工作的特點，摒棄了球地球和圓軌道的傳統模型，創新性的採用三個橢圓解決了星載雷達的星地幾何關系問題，得到了在地球橢球模型和橢圓軌道模型下由雷達天線指向確定目標坐標的方法，為星載合成孔徑雷達系統設計與模擬提供了更為精確的幾何基礎。
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