fundamental wave 中文意思是什麼

fundamental wave 解釋
基本波
  • fundamental : adj 1 基礎的，基本的，根本的，重要的；原始的，主要的。2 【物理學】基頻的，基諧波的；【音樂】基音...
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. The signal we named it fundamental wave ; according to the fundamental wave, coefficients of the fundamental wave can be lined in a sequence. when the unique of the dissolve of the fundamental wave can be confirmed, the sequence of the coefficients can be regarded as one of representation forms of the signal itself ; theory of dissolvable signal shows that when order of the matrix of fundamental wave sampling equals to number of fundamental waves, the sequence of the sampling values from sampling points must be matched one by one with the sequence of the coefficients of fundamental waves. the sampling composed by sequences of the sampling values must be full sampling ; the relevant deductions of the theory of dissolvable signal shows that when sampling the signal, sampling frequency must be lager than the ratio of the number of fundamental waves to the occupation time of the fundamental waves ; to band - limited signals, when the fundamental wave is a sine signal, the results from the relevant deductions of theory of dissolvable signal is coherent to the classic sampling theory

    本文通過分析認為，當信號集中的任一信號可表示為一系列已知信號的線性代數和時，信號集便構成可分解信號集，已知信號稱為基波信號；對可分解信號而言，基波系數構成一序列，當對指定的基波信號集分解唯一確定時，系數序列本身便是信號的一個表示；可分解信號采樣定理指出當基波樣值矩陣的秩等於基波數時，則由采樣點處的采樣樣構成的樣值序列必與基波系數序列一一對應，從而由該樣值序列構成的采樣必為完全采樣；可分解信號采樣定理中的推論指出，對信號集進行采樣，采樣頻率必須大於其信號分解的基波數與其對應時長之比；對有限帶寬信號，若基波信號為正弦信號時，由可分解信號采樣定理推論給出的結論與經典采樣定理一致。
  2. Exploding wires phenomenon is that if the high - density energy is poured into metal wire with small transverse section in a short time from high power pulse source, the metal wire will explode into gaseity and generate significant shock wave. the. fundamental reason of the generated shock wave is the plasma

    爆炸絲現象（ explodingwiresphenomenon ）是將存儲于高壓電容器中的能量，在極短的瞬間內傾注于很小截面積的金屬絲，使之汽化，產生強大的沖擊波，這種沖擊波產生的根本原因就是等離子體。
  3. In the thesis, the fundamental formula of ffd method derives from the square root that is approximated by a continued fraction expansion in the one - way wave equation. optimizations of the parameters of the finite - difference operator improve the validity of the method

    本論文用連分式近似單程波波動方程中的平方根導出ffd演算法的基本公式，並對ffd演算法中的有限差分運算元進行了系數優化，進一步提高了計算的有效性。
  4. The magnetic field requirement of the sth harmonic gyroklystrons over cyclotron resonance masers ( crms ) would be reduced by a factor of s relative to operate on the fundamental cyclotron frequency, so that the amplifier could be applied to highly mobile millimeter wave radar systems

    基於電子迴旋諧振脈塞原理工作的諧波迴旋速調放大器的工作磁場強度是基波的1 / s （ s是諧波數） ，因而能適用於機動性較高的軍用毫米波雷達系統。
  5. The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations. the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light. using the polarization function of lbo, a quartz full - wave plate was introduced into the cavity, a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed

    將腔內多縱模倍頻速率方程推廣應用到準三能級藍光激光器中，分析了一個縱模、兩個縱模、多個縱模時的噪聲情況，合理地解釋了實驗中激光器單縱模運轉以及長腔多縱模運轉時穩定輸出的實驗現象，同時利用該速率方程分析了以各向同性激光晶體nd : yag為工作物質，類臨界相位匹配lbo為倍頻晶體的藍光激光器中基頻光偏振特性，合理利用類臨界相位匹配lbo倍頻晶體的偏振特性與引入的石英晶體全波片構成雙折射濾光片，通過選單頻來抑制噪聲，獲得了藍光低噪聲的穩定輸出。
  6. In this paper, a method assessing harmonic impedance by synchronously layered distortion waves is proposed, which is based on the " fluctuations method " - a simple and effective means. however the method is based on the fourier transform, which can just precisely analyze the signals whose cycle is integer times as broad as that of fundamental wave. with sampling windows widening, the variations of distorted signals in a fundamental period are weakened

    本文是以一種被廣泛採用的非干預式諧波阻抗估計方法? ? 「波動量」法，的基礎上，針對現有方法以直接的fourier變換為分析工具，只能對基波周期的整數倍窗口采樣信號進行分析，畸變信號在一個基波周期內的變化隨采樣窗口增大而被弱化，並且，諧波次數越高，解析度就越低，大大限制了諧波阻抗估計的準確性的提高。
  7. This paper reviewed the researches and applications of seismic techniques in mining exploration in detail, including the fundamental researches composed of acoustic properties and scattering characteristics, regional reconnaissance studies. 2 - d and 3 - d surface seismic imaging and down hole seismic imaging, and pointed out the main seismic method used in mining exploration is reflected wave methods at present

    摘要系統地總結了國內外現有金屬礦地震勘探技術及其研究與應用現狀，其中包括巖石物理性質分析和散射波場特徵分析等基礎研究、區域普查地震技術、二維和三維地震成像技術及井下地震勘探技術。
  8. Second harmonic is generated by 532nm fundamental wave on clbo, and the harmonic pulse is plotted along with the clbo crystal length

    以波長為532nm基波為例，數值模擬了經過不同長度的clbo晶體后諧波的脈沖波形，及脈沖寬度隨晶體長度的變化。
  9. Laser - diode end - pumped solid - state laser has many advantages, including high efficiency, good beam quality, high frequency stability, narrow line width, long lifetime, compact configuration, convenient for using et al. especially, single - frequency solid - state laser sources are required for many fields of fundamental research and scientific application, such as gravity - wave detection, coherent laser radar, coherent communication and fiber sensing

    激光二極體泵浦的固體激光器具有全固態、小型化、效率高、使用方便等優點而受大家的廣泛關注，尤其是實現單頻運轉的全固態激光器以其優良的頻率特性和輸出功率穩定性可廣泛應用在相干信息處理、頻率計量、量子光學、引力波測量和量子信息等研究領域。
  10. Abstract : based on two order approximation of the variation of refraction index produced by self - action while optical pulses are traveling in kerr - medium, the propagation equation has been solved. furthermore, the strict analytical expressions of the amplitude, width and chirp parameter of chirped gaussian pulse, relative to the propagation distance, are deduced. the solitary wave traveling conditions of fundamental mode gaussian pulse have been discussed

    文摘:將光脈沖在克爾介質中自作用產生的折射率變化作二階近似，求解所得到的傳播方程，得到啁啾高斯脈沖幅度，脈沖寬度和周啾參數隨傳播距離變化的嚴格解析解，討論了基模高斯脈沖孤波傳播的條件。
  11. Abstract : with the use of the theory of blazed phase gratings, the color separation phase grating used for icf drivers is designed, which can off - axis separate the fundamental, 2nd and 3rd harmonic waves. theoretically, its diffraction efficiency for 0 " th order at the 3rd harmonic wave is 100 %. experimentally, a color separation grating is made. both its separation angles ( at the 1st and 2nd harmonic waves ) and its diffraction efficiencies for 0 " th order are measured, and some significant results are presented

    文摘:採用相位閃耀光柵原理設計出用於icf驅動器中能離軸分離基頻、二倍頻、三倍頻激光的色分離相位光柵，理論上三倍頻零級衍射效率達到100 ，同時，對該相位光柵進行了實際製作和實驗測量，測出了基頻光和二倍頻光的分離角以及光柵的零級衍射效率，得到了一些有意義的結果。
  12. To study the resonant characteristics of eccentric circular and concentric circular - elliptical ring microstrip antennas, the method, which is connected with the concentric ring microstrip antenna and based on the perturbation, is employed to calculate resonant wave numbers. comparisons of calculations with reference for the fundamental mode are also presented, agreement is very good for small eccentricity

    為研究偏心圓環及同心圓-橢圓環微帶天線的諧振特性，運用了一種以對同心圓環微擾為基礎的計算方法，計算的諧振波數值與參考文獻作了比較，在小偏心率的情況下，一致性很好。
  13. The numerical work gives out lot of results of different aberrations. the effects of the fundamental wave ' s aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed

    研究結果表明位相失配和走離效應是影響諧波位相的重要因素;像差在非線性光學過程中傳遞結果不是線性疊加的，而是非線性的。
  14. It shows that when walk - off and diffraction effects could be ignored approximately estimation of the phase distribution of second - harmonic wave could be done. the far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. the phase distribution of both fundamental and harmonic wave is measured using hartmann - shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively

    這說明利用非線性光學頻率變換方法拓寬波前傳感器件的響應波段是很難實現的，但是，通常三波相互作用過程的研究均是建立在平面波和理想高斯光束之上，因此我們對于位相畸變倍頻過程的研究是非線性光學領域一個重要而有意義的新課題，它有助於人們更加深入理解非線性光學效應，為進一步合理利用之奠定了理論和實驗的基礎。
  15. The detecting method of dvr is different from harmonic and reactive current detecting methods. it need detect not only total harmonic distortion but also the difference between fundamental wave component and reference value

    Dvr的檢測方法與諧波、無功電流的檢測不同，不但需要檢測出除基波分量之外的總畸變分量，還要檢測出基波分量與基波基準值之差。
  16. 2. a theoretical analysis and numerical simulation considering pumping beam waist, q - switch, cavity design are presented. combine with the theoretical analysis and the request of fundamental wave, the appropriate cavity and q - switch are chosen

    2 .從諧振腔設計理論及調q技術進行分析，討論了ld泵浦固體激光器的輸入輸出特性及影響閾值的主要因素;結合理論和我們下面工作的要求，選擇合適的腔形及調q方式。
  17. In laboratory, this system has fulfilled the measurement of simulant large current and high voltage, with the precision better than 1 % to the fundamental wave

    在實驗室中成功測量了模擬大電流與高電壓，基波測量精度優於一級，對其它各次諧波的測量精度滿足國家標準要求。
  18. For example, to the frequency splitting between fundamental wave and second harmonics, the filter daub6 and cqf12 do well in extract the fundamental wave, whereas the filter daub5 and daub6 do well in extract the second harmonics

    如對于基波與二次諧波的分頻， daub6和cqf12濾波器對基波的濾波效果較好，而daub6和daub5對於二次諧波的濾波效果較好。
  19. Problems of traditional measuring methods are analyzed and a new method based on the theory of voltage - dividing capacitor is brought forward. to extract fundamental wave in signals efficiently, a new calculation method of dielectric loss based on ann is introduced in detail. b / s mode is applied to realize insulation information inquiry system in web style

    具體工作如下：設計了一套先進的絕緣在線監測系統框架；分析傳統測量方法的問題，提出了基於電容分壓原理的測量方法；採用計算機串口來進行數據的傳送；為有效提取信號中的基波分量，詳細介紹了一種基於人工神經網路的介損計算方法；採用b / s模式，實現基於web方式的絕緣監測信息查詢系統。
  20. This paper introduces a method of calibrating and processing angular speed fluctuation in ni sampling system - pxi - 6281, it accomplishes the acquisition of angular speed fluctuation by distortion of signal, analyzing fundamental wave, high order harmonic of angular speed feedback signal and calculating the amplitude ratio of base wave and high order harmonic

    摘要利用ni的pxi - 6281高速數據採集卡來完成角速度波動信號的採集，借鑒信號失真度的概念，分析角速度反饋信號的基波和高次諧波大小，求取高次諧波與基波幅值比，作為角速度波動率。
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