子波頻帶寬 的英文怎麼說

中文拼音 [zibīndàikuān]
子波頻帶寬 英文
wavelet bandwidth
  • : 子Ⅰ名詞1 (兒子) son 2 (人的通稱) person 3 (古代特指有學問的男人) ancient title of respect f...
  • : 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...
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  1. Our treatment shows in the raman effect case, mnls solitons, the same as nls solitons, keeps its energy, initial center and initial phase unchanged. however, the raman effect, not the same as nls solitons. reduces its amplitude, widens its width and under the same conditions, the self - frequency shift of mnls soltions is closer to the result of numerical simulation. in the raman effect together with frequency filters case, mnls solitons, the same as nls solitons, keeps initial center and initial phase unchanged and bandwidth - limited frequency filters can make the mean frequency of mnls soltion stand a steady value at the red side of the initial mean frequency, i. e. suppress the self - frequency shift of mnls soltions. and that, the other physical parameters of mnls soltion last stand a steady value. however under the same conditions, the steady value of the mean frequency of mnls soltions is closer to the initial mean frequency and the result of numerical simulation

    有所不同的是, raman效應雖然不改變孤能量,但會引起孤峰值的下降和度變,且在同一條件下, mnls孤微擾理論得到的自移比nls孤微擾理論得到的更接近直接數值計算結果。有限率濾也不引起mnls孤初始中心、初始位相的改變,選取適當的率濾器參數值能使孤的平均率穩定在初始平均率的紅側一穩定值,抑制了自移,而且孤的各物理量最後都穩定在一穩定值,這些與nls孤微擾理論都是類似的。有所不同的是,度為飛秒量級下, mnls孤平均率的穩定值更接近初始平均率,更接近數值計算結果。
  2. Two cold - test parameters determine the working voltage, frequency band, efficiency and gain of twt. they are dispersion and interaction impedance of the slow - wave structures ( sws ) in twt, which are very important targets for twt

    管慢結構的色散和耦合阻抗是行管設計中兩個非常重要的冷參量,它們決定了整支管的工作電壓、度、工作效率和增益。
  3. Moreover, the density of nano - hexa - ferrites was reduced, so they are very easily to be applied. the purpose of this paper is to synthesize nano - hexa - ferrites. comparision with normal materials, nano - materials have special performance because of their special surface effect, volume effect, and quantum effect

    納米粒由於具有特殊的表面效應、體積效應、量隧道效應,表現出與常規材料不同的物理化學性質,對納米吸材料而言,其具有極好的吸特性,同時具備吸、兼容性好、質量輕和厚度薄等特點。
  4. Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band

    在本論文的研究過程中,通過合理利用各種現有的天線化和小型化的理論成果、有效的綜合各種技術措施,運用矩量法和遺傳優化演算法等數值方法,深入研究了加載單極天線問題,旨在全面提高高/甚高段內的天線增益和降低電壓駐比,以獲得較高增益的、基本滿足駐要求的小型超天線。
  5. Because gyrotron traveling wave tube amplifier ( gyro - twt ) is an important millimeter wave amplifier with the characteristics of the high output power, the broadband width, and good efficiency, which has vast application vistas in many areas such as millimeter radar, communications, electronic countermeasure, and so forth, it has been pay much respect in the world

    迴旋行管是一種大功率、高效率、放大器,在毫米雷達,通信與電戰等方面有十分重要的應用前景,因而在國際上受到高度重視。由俄羅斯人g . denisov等提出的螺旋導是一種比較理想的結構。
  6. It can be deduced from the characteristics of ilpll circuit that injection - locking bandwidth is not only related to the injection - locking bandwidth without feedback loop, but also related to the characteristics of frequency mixing, loop gain and the change of the loop phase. thus, the needed bandwidth can be obtained by adjusting the loop parameters. and the phase noise characteristics are mainly determined by loop transmission factor

    由ilpll電路特性的推導得出:注入鎖定不僅跟開環時的注鎖有關,而且與混特性、環路增益以及環路相位變化相關聯,可以通過調節環路的參數得到所需;相噪特性主要由環路傳輸因決定,可以通過調節環路濾得到比開環注入鎖定相噪更優的特性。
  7. First, this dissertation analyses the waveform of chirp - subpulse stepped frequency signal, studies and simulates the ambiguity characteristics, the spectrum structure and the basic process to obtain high resolution range profiles, and discuss this signal ’ s high range resolution characteristic and wide spectrum characteristic

    首先,本文對chirp脈沖率步進信號進行了形分析,研究了chirp脈沖率步進信號的模糊特性、譜結構以及合成高分辨距離像的基本過程,討論了chirp脈沖率步進信號的高距離分辨力和譜特性。
  8. For the operating frequencies of modern radars and guidance 、 electronic countermeasure system 、 communication system 、 remote sense and remote measurement system expand to millimeter band step by step, the operating frequencies of t / r module raise ceaselessly. simultaneity millimeter wave t / r module which has the advantages of small dimension, lightweight, wide band is more suitable to the requirement of modern army and communication system. this paper is mainly referred to the research of t / r module in ka band

    現代雷達與制導、電對抗、通信、遙感遙測系統的工作率已逐步由微段擴展到毫米段,因此t / r組件的工作率也在不斷的上升,同時,毫米t / r組件與微t / r組件相比具有尺寸小、重量輕、等優點,更適合現代軍事和通信系統的要求。
  9. In addition, for a dispersive high frequency system, because of the requirement of the phase in - step between the beam and electromagnetic wave, the bandwidth are expected to be located in a narrow range

    另外,對干填充等離體的色散高系統,由干電注和電磁互作用的同步要求,系統必然分佈在某一有限范圍內。
  10. Twt has the characters of high plus, wide frequency, longevity and high reliability, so twt is the core apparatus of communication, radar, electron antagonizing, ground station and microwave pyrogenation system, and has most important role in modern high - tech war

    大功率行管具有大功率、高增益、和長壽命等特點,廣泛地應用於雷達、電對抗和通訊等國防重點工程.被譽為武器裝備的「心臟」 。
  11. For radar is a complicated electronic system, the implementation of uwb will be subject to the level of electronic hardware. the large instantaneous bandwidth of uwb return causes great trouble to receiver

    由於雷達是綜合性很強的電系統,超雷達的具體實現要受到實際硬體水平的限制,其中視信號瞬時大給接收機數據採集造成了很大的困難。
  12. The above waveforms discussed are to synthesize the wb or uwb with narrow band pulses. assuming the transmitting uwb linear frequency modulation ( chirp ), dechirp processing is introduced, and the method involved to obtain high resolution by reducing the if bandwidth is presented. furthermore, dechirp processing used to sar imaging is discussed, and the processing steps are described

    < wp = 4 >以上研究的兩種信號形式都是通過窄脈沖串相參合成的方法來獲得超信號,本文還探討了去斜率( dechirp或stretch )方法,分析了去斜率降低接收機中、 fft獲得目標一維距離像的原理,並探討了線性調去斜率合成孔徑雷達成像,給出了具體實現步驟。
  13. Due to its intrinsic merits, such as wide band gap, high electron saturated drift velocity, high melting point, good coefficient of thermal conductivity, anti - radiation and good chemical stability, gallium nitride as a direct band gap semiconductor has become the promising material for the application of short - wave light - emitting devices and high temperature, high frequency and high power electronic devices

    Gan是直接隙半導體材料,以其禁度大、電飽和漂移速度大、熔點高、熱導率高、抗輻射能力強和化學穩定性好等優點成為製造短長光發射器件及高溫、高、大功率電器件的理想材料。
  14. The detailed research contents are as following : ( 1 ) based on molecule spectrum theory and experimental data, presented are fine parameters of ch4 combined frequency band v2 + v3 and wide frequency band 2v3, including absorption spectrum central wavelength, line space, intensity distribution, line type and line width. these fine parameters have played solid foundation for measurement wavelength selection, and effectively eliminated cross sensitivity

    主要研究內容如下: ( 1 )應用分光譜理論和實驗數據給出了甲烷氣體在聯合v2 + v3和泛2v3的精細參數,包括吸收線的中心長、吸收線間隔、吸收線強度分佈、吸收線線型和線,為系統設計選擇合適長提供依據,消除交叉敏感。
  15. It combines the advantages of ofdm and cdma. it can convert the frequency selective channel propagation of the broadband to flat channel of the subcarrier

    它結合了ofdm和cdma技術的優點,能夠把率選擇性衰落轉化為每的平坦通道。
  16. The content can be outlined as follows : the introduction of broadband beamforming, the study of a robust broadband generalized side lobecanceller ( gsc ), the discussion of an integral constraint beamforming based on subband processing. the broadband beamforming can be designed in time domain or frequency domain

    內容包括:束形成器的時域處理的介紹,一種穩健的旁瓣對消器;基於處理的積分約束的束形成器的設計;並在文中簡述了束形成器時域處理以及域處理的優缺點。
  17. Cdma ( code division multiple access ) technology is used in communication system abroad because of its merit, people use cdma technology to transmit data, image and also other different information in different sub - frequent bands of a broad channel. so a research, which combines multi - carrier signal processing and cdma technology and processes different sub - frequent bands signal at same time, is full of practicable value

    Cdma技術由於其優點被廣泛採用在通信系統中,人們在一個通道的不同段上使用cdma技術傳輸數據、圖像等不同信息,所以將多載信號處理與cdma技術聯系起來進行研究,並且同時將不同的信號進行處理是一個很有實用價值的問題。
  18. The low frequencies in mra are in good resolution, but the high ones are not. however, the wavelet packet can overcome the shortcomes in high frequencies and it can make the width of each frequency - band same. however, the calculations are large as the decomposed layer is much high

    多分辨分析mra的低解析度較好,但其在高部分卻不太理想,而用小包可以克服mra在高部分的缺陷,並且可以做到每個都相同。
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