射電波道 的英文怎麼說

中文拼音 [shèdiànbōdào]
射電波道 英文
radio channel
  • 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） ...
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 電波 : [電磁] radio wave; electric wave; hertzian wave
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變，各向異性，非均勻、色散的復雜介質。為了保證依賴于電離層進行的短波通信質量，必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短波通信或高頻天波雷達相關的天波傳播通道的狀態，對短波通信和天波雷達工作起了重要的輔助作用。
  2. Second, the imaging model built here has taken into account the tilt modulation, the hydrodynamic modulation, and current modulations of radar cross section. consequently, it has realized the imaging simulation of four kinds of wakes with the same imaging model. third, the orbital velocity of ocean wave was considered as the basic dynamic factor, and the imaging model calculates the influence on raw data by the wave m ovement according to the orbital velocity

    該模型的主要特點是： （ 1 ）它採用了三尺度復合表面模型的思想來計算海面的電磁散射，考慮了中等尺度波對紋波的進一步調製作用，彌補了傳統雙尺度模型的不足； （ 1 ）它考慮了海浪的傾斜調製作用、流體動力調製作用和流場對雷達截面的調製作用，實現了用統一的模擬模型對四種艦船尾跡特徵進行成像模擬； （ 3 ）它把海面長波的軌道速度作為基本的動態成分，並依此來考慮海面運動對sar回波信號的影響。
  3. Company now have independence develop ten many china patent and many independence intellectual property ' s software copyright ' s product ; company major product : cable television consumer management control system ( but look for address 2 - 8 branches allot style, 8 - 32 gather line style ) ; shoot frequently plus unfasten harass system ( crowd plus crowd unfasten, cent two sections, point channel shan unfasten ) ; video frequency number subsections plus unfasten harass system ; cable television network burglarproof sow system ; number cable television product is with number mmds ( microwave ) systematically ; general purpose type prevent thunder supply electric appliances, shoot frequently automate supply electric appliances, but look for address control supply electric appliances ; power supply prevents thunder protection product ; pass flow branch, dispenser, split utensil, cavernous wave utensil, power supply inserts utensil, but transfer attenuator, but transfer equalizer wait for

    目前擁有十多項中國專利和多個自主知識產權的軟體版權的產品；公司主要產品：有線電視用戶管理控制系統（可尋址2 - 8戶分支分配式、 8 - 32戶集線式） ；射頻加解擾系統（群加群解、分兩段、按頻道單解） ；視頻數字分段加解擾系統；有線電視網路防盜播系統；數字有線電視產品與數字mmds （微波）系統；通用型防雷供電器，射頻自動控制供電器，可尋址控制供電器；電源防雷保護產品；過流分支、分配器，分流器、陷波器、電源插入器，衰減器、均衡器等。
  4. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  5. In wireless communication, the relative movement between the transmitter and the receiver may cause the change of the electromagnetic wave propagation path, thus makes the channel become a random time - variety channel

    在無線通信中，發射機和接收機之間的相對移動會造成電波傳播路徑的改變，從而使通道變成隨機時變通道。
  6. Then on january 17, 2004, while preparing to attend group meditation at the oklahoma center, i perceived a ray of extremely bright light shooting up from the top of my head, as quick as a flash, to an area full of magnificent golden palaces radiating bright light next to an emerald green lake, while countless flowers spoke in an exotic, melodious language similar to the celestial music

    2004年元月17日，當我正準備前往小中心參加共修時，一道強光剎時從我的頭頂射出，快如閃電，瞬間投射到一處金殿林立的地方，那些金殿宏偉華麗光彩奪目，旁邊有一個碧波蕩漾的翡翠湖。
  7. 3 in experiment the common electrical - resistance strain gages is used as receiver to replace the pzt or velocity and acceleration transducer which is frequently used in pipeline not

    3 、實驗採用動態電阻應變電測法，採用普通的電阻應變片作為接收傳感器，代替了通常用於管道檢測的壓電探頭或樁基完整性檢測的反射波法中使用的速度傳感器或加速度傳感器。
  8. A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )

    設計了一種基底鉆周期圓孔結構的電磁（光子）晶體貼片天線，用fdtd方法並結合pml吸收邊界條件對該天線進行了研究，結果表明本文所設計的基底鉆孔型電磁晶體貼片天線取得了多方面的性能改善，與普通天線相比，基底中的表面波受到很大抑制，天線的帶寬增加，遠場方向圖上天線的旁瓣和背瓣被明顯削弱，向前輻射的增益由原來的12db增加到26db ，增加了14db ，比文獻上報道的gonzalo等人的研究結果提高了4db 。
  9. The underwater - radio buoy for use as obtaining the ocean " s acoustical parameters is a underwater acoustic signals record system which has long distance radio remote control and data transmit function. the technology key of the dissertation study is that under the requirements of the system the monitor and record equipment on the acoustic source vessel, the monitor and record equipment on control vessel command and control the work slate of the buoy system by radio data transmitting mode of short wave transmitter - receiver

    海洋環境參數獲取浮標監測系統屬于具有長距離無線電遙控?數傳功能的水下聲信號接收記錄系統，本論文研究目標的技術關鍵在於根據系統要求，指揮船和發射船監控記錄設備通過短波電臺以無線數傳方式，對浮標系統的工作狀態進行指揮和控制，浮標則通過同一短波通道向指揮船上報浮標方位、工作狀態、關鍵數據及非常狀態下的報警信號等。
  10. In the following chapters, a 16 - channel experimental phased array ultrasonic testing system is thoroughly explained, including digital beam forming, low noise programmable amplification of received ultrasound signal, multi - channel hi - speed hi - precision data acquisition, hi - speed real - time processing of multi - channel ultrasound signal, and hi - speed data transfer based on pci bus. in addition, the frame of software system is built

    本文詳細闡述了作者所獨立研製的16通道相控陣超聲檢測實驗系統，包括數字化超聲發射/接收波束形成、超聲信號的低噪聲程式控制放大、多通道高速高精度數據採集、多通道超聲信號高速實時處理、基於pci總線的高速數據傳輸等全部電路模塊的結構及工作原理，並說明了所編寫的底層軟體系統的框架。
  11. 3. polycrystalline lif thin films were grown by thermal evaporation on amorphous substrates. properties of broad band photo - luminescence at room temperature of active channel ( f2 and fa + ) produced by electron beam irradiation were studied

    首次用熱蒸發法在玻璃襯底上制備了多晶lif薄膜平面波導，研究了由電子束照射產生的有源（ f _ 2和f _ 3 ~ +色心）溝道的室溫寬帶光致發光特性。
  12. As a manufacturer of famous security products ( infrared shoot ), boshidao teletronic will keep the continuous technical innovation and quality improvement, make the mutual profits with customers as our partners

    波士道科技電子為業內知名安防產品製造商（紅外對射）我們堅持連續不斷的技術創新和品質要求，將顧客為合作夥伴共創利潤、創造雙贏。
  13. To understand how negative refraction can arise, one must know how materials affect electromagnetic waves

    要了解負折射如何發生，我們必須先知道材料如何影響電磁波。
  14. By use of g. d. shen ' s tunneling cascade theory we have fabricated high performance and high power tunneling cascade ingaas / gaas / algaas 950nm / 990nm double wavelength strained quantum well lasers on the basis of former tunneling cascade high power lasers and high brightness light emitting diodes. the lasers " two peak wavelength are 95 ? nm and 990 ? nm. el spectrum ' s fwhm is 3nm

    在以往隧道級聯大功率應變量子阱激光器及高亮度發光管的理論研究與實驗的基礎之上，採用沈光地教授提出的隧道級聯思想，成功研製出基於ingaas gaas algaas材料的高性能大功率隧道級聯950nm及990nm雙波長應變量子阱激光器，激射波長分別為952 2nm和990 2nm ， el譜的譜線寬度約3nm ，未鍍膜器件單面最大輸出光功率可達2w以上，閾值電流最低達120ma 。
  15. For the purpose of determining the fine structures and deleting interferences in solar radio spectra, we introduce a data processing method with the combination of wavelet transform and channel - modification. firstly, the original data were divided by the each mean value at each channel, which can clean a large part of horizontal branch of grid - texture on spectrum. secondly, wavelet transform was applied to the result by the first step

    為此，我們首先引入了「通道歸一化」方法，它可以有效地消除網紋結構中的橫條紋，緊接著，再對第一步處理結果實施小波濾波，結果證明，兩種主要方法的聯合應用能夠有效地去除疊加在太陽射電頻譜圖中的網紋結構和其他噪聲，得到清晰的頻譜圖。
  16. A collinear acoustooptic - deflector of pronton - exchanged linbo3 channel wave - guide is studied. the theoretical analysis, structure design and device fabrication of linbo3 pronton - exchanged acoustooptic wave - guided deflector have been finished in this thesis. the width of wave - guide, the width, spacing, effective aperture and width of electrode of interdigital transduces have been theoretically analyzed and designed

    本論文研究了一種質子交換linbo3溝道波導共線式聲光偏轉器，其特點是利用了溝道波導的橫向約束，限制了聲波的發散和衍射效應，使得窄孔徑電極結構得以實現，從而增加了功率密度，使總的聲場驅動功率降低。
  17. We can see that the earth s atmosphere is opaque to, say, gamma rays and transparent to the visible light. so, we have to put gamma ray telescopes in space

    下圖顯示了地球大氣層對不同波長的電磁波的阻光性，雖然可見光基本上可暢通無阻，伽瑪射線卻會被大氣層所阻隔，所以伽瑪射線望遠鏡必須要放入太空軌道才能發揮功用。
  18. Methods of measurement for equipment used in digital microwave radio transmission systems. part 3 : measurements on satellite earth stations. section 11 : service channel equipment for scpc - psk transmission

    數字微波無線電發射系統使用設備的測量方法.第3部分:衛星地面站的測量.第11節: scpc - psk發射服務通道設備
  19. The reasons comes from many aspects, commonly as : parts looseness, malfunction of e apparatus, e waves interference in same channel, insufficence of emitting, etc

    失控的原因是多方面的，常見的原因有：機件松脫電子器材故障相同頻道電波干擾發射接受電量不足外界電波干擾。
  20. Radio waves emitted by neutral hydrogen in the universe are detectable and the frequency is around 1. 42 ghz. in hong kong, this frequency is protected by international treaties and reserved for radio astronomical observation

    人們能夠測量在宇宙內由中性氫產生的無線電波，頻率約在1 . 42 ghz ，在香港，這段頻道是受到國際公約保護，留作射電天文觀測之用。
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