電波的相位 的英文怎麼說
中文拼音 [diànbōdexiāngwèi]
電波的相位
英文
phase of a wave- 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...
- 的 : 4次方是 The fourth power of 2 is direction
- 相 : 相Ⅰ名詞1 (相貌; 外貌) looks; appearance 2 (坐、立等的姿態) bearing; posture 3 [物理學] (相位...
- 位 : Ⅰ名詞1 (所在或所佔的地方) place; location 2 (職位; 地位) position; post; status 3 (特指皇帝...
- 電波 : [電磁] radio wave; electric wave; hertzian wave
- 相位 : phase position; phase
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As a result, the electromagnetic field intensity is changed accordingly and fluctuating current in the damper coil is created. damping force is mostly produced because of the phase difference between fluctuating current and displacement of rotor. the formulas of fluctuating current and damping coefficient are deduced theoretically, and the calculated results are consistent with the experimental results
通過分析發現電磁阻尼器線圈內由於轉子渦動時變化的磁場而產生的波動電流與轉子位移間的相位差是產生阻尼的主要原因,推導了波動電流、阻尼系數的計算公式,並通過實驗展示了被動式電磁阻尼器的阻尼效應。In this thesis, firstly, we put forward a new algorithm of the synchronization of carrier reference phase, that is to use the curve synthesizing with the general digital carrier phase looper to have an estimation on carrier frequency within 10 ms so as to meet the need of meteor burst communication. we have done some simulations to get the performance of carrier frequency estimation using two modulation modes ( 16qam and 4 - qpsk ), and had some test on the carrier phase looper in conditions when using different baud rate transmission and when the baud tuning have windage
我們對兩種正交調制方式( 16qam和4 - qpsk )進行了模擬工作並給出了模擬結果,同時討論了碼元同步定時誤差對鎖相環路工作的影響並根據流星通信中使用變速率傳輸時鎖相環路的載波同步性能進行了測試;然後在基於軟體無線電思想的數字處理平臺(該數字處理平臺實現了中頻數字化)上用dsp軟體完成了載波的相位跟蹤。There is great change of negative current component when it happens the line - open fault. it is marked as the occurrence of the fault. and it can be concluded the phase characteristic of negative current in the line. in the transient course, there are plenty of harmonics in the fault line. through the transient analysis, it is drawed that the amplitude of each harmonic in fault phase is greater than other phases. harmonic current in fault line is far greater than other normal lines
發生斷線故障以後,線路中會出現負序電流的突變,可以作為故障啟動判斷的標志,並且通過分析得出了故障時負序基波電流的相位特點。在故障暫態過程中,故障電流中含有大量豐富的諧波成分,各次諧波在故障期間有突變,並且衰減很快。Phase array radar can scan beams fast by controlling the phase of radiator elements in the antenna aperture surface, which shows many excellences such as agility, change celerity and multifunction. therefore, phase array radar is fit for the necessity of combat readiness
這種雷達通過電的方式控制天線孔徑面上各輻射單元的相位變化,以實現波束的快速掃描,使其具有靈活、變化快速、多功能等優點,適應戰備需要。With the frequency division of wpd, etm uses shannon entropy as the criterion of determining whether or not dsi exist in certain wpd tree nodes and interference are suppressed successfully. lots of simulation data, lab data and on - site data have indicated that etm works with good efficiency, without pre - knowing of dsi information, extracts the phase of pd pulses accurately and can calibrate quantity of single type discharge
大量的模擬數據、實驗室實測數據以及現場實測數據處理結果表明,小波包變換熵閾值法抑制干擾能力強,無需事先確定干擾的分佈,能夠準確檢測局部放電信號的相位信息,對于單一的放電類型,可以確定放電量的大小。Because of the resonant interaction between the reb electrons and the wave excitated by the embp instability, the reb electrons cannot transport continuously, but in form of current clumps. the transport velocity is close to the phase velocity of the wave
因為embp不穩定性所激發的波和束流電子之間的共振相互作用,束流電子不是連續地傳播,而是以電流團的形式傳播,傳國防科技大學研究生院學位論文播速度接近於波的相速度。However, df pre - processing is not required in a interferometer direction finder. it only makes use of the phase relations or differences of sensors disposed at different position. azimuth and elevation are caculated from the phase differences or displayed directly on a crt drived by the voltage or current from the phase differences
干涉儀測向不必進行測向信號預處理而是直接或間接求取在空間上分開的傳感器上感應電勢之間的相位關系,即干涉相位差,方位角或仰角是直接由干涉相位差計算得到,或將兩基線正交的天線陣的干涉相位差轉化為驅動電壓(電流)分別加到crt陰極顯示器的垂直偏轉線圈和水平偏轉線圈,模擬顯示出來波方位,干涉儀測向為典型的相位測向方法。In this thesis, phase - locked loop ( pll ) technogies are used to acquire phase of fundamental current in bais current, which enhances the detecting precision of bais current. and we want the phase of bais current and the phase of system current is the same, so this thesis think of locking the phase of bais current which based on this theory to sure the security and the reliability of apf
本文採用鎖相技術,以獲得畸變電流中基波電流的相位,進一步提高了畸變電流的檢測精度,並據此原理考慮鎖定補償電流的相位,使補償電流與系統電流相位同步,保證apf安全可靠運行。In this article, introduce the important meanings of a - b effect, first is a have physics factors, second is wave function phase factor is connected with geometrical factor in ( b = 0, a 0 ), through a - b effect, we know : electromagnetic field vector e, b is local quantity, electromagnetic potential a, is global quantity, adding a, description and by the way of loop integral, electromagnetic field " effect is completely descripted
本文介紹了有重要歷史意義的a - b效應, a - b效應揭示了兩點物理觀念的變革:一是電磁矢勢有物理效應。二是在無場強但有磁矢勢( b = 0 , a 0 )的區域,波函數的相位因子與其運動空間結構有關。 a - b效應顯示; e 、 b是局域量, a 、是總體量,只有加入a 、之後的描述,並通過a的環路積分,才能對電磁場的作用做出完全準確的描述。Based on schr ? dinger equation we obtain the vigorous result of phase - coherent electronic transport through a single interface in quasi - one - dimension electron waveguide
本文研究了電子波導中單個雜質原子對電流分佈的影響,基於薛定諤方程,得到了電子在準一維電子波導中單個雜質所在界面處的精確的相位相干電子輸運圖像。When the analyzer was located in four angles, a photoelectric detector was used to gather the energy of laser, so we can calculate the retardation of wave plate with the phase shifting
測量裝置採用了步進電機帶動檢偏器旋轉,運用光柵編碼器測角裝置測量檢偏器的轉動角度,使用光電探測器採集檢偏器在四個方位角度的光強值,根據移相演算法得出波片的相位延遲角。Signalling on low - voltage electrical installations in the frequency range 3 khz to 148, 5 khz - low voltage decoupling filters - phase coulper
頻率范圍為3khz至148 . 5khz的低壓電氣設備的信號傳輸.低壓退耦濾波器.相位耦合器In view of the problem of signal - to - noise and stability of circuit of photoelectric detection for weak signal, a low - noise amplifier circuit of photoelectric detection is designed, with the functions of filter and phase compensation
摘要針對光電檢測中對微弱信號放大而帶來的信噪比和穩定性問題,設計了一種低噪聲光電信號放大電路,它具有電壓、電流濾波和相位補償功能。In this work, based on the threshold condition of the fiber grating external cavity semiconductor laser ( fgesl ) which the phase of the fiber grating has been included, the effect of the temperature variation and the fg external cavity length on the lasing wavelength of the fgesl has been investigated theoretically. in addition, we have used the phase condition of fgesl to get the longitudinal mode distribution of fgesl, then the influence of the injected current on the output characteristics of fgesl has been studied
基於此,本文中利用陽實際的反射相位分佈,計及半導體激光器( ld ) 、外腔及光纖光柵( fg )三者的共同作用,根據fgesl滿足的閩值條件,從理論上研究了溫度及外腔長度的變化對fgesl激射波長的影響;根據fgesl中縱模所滿足的相位條件得到其縱模分佈后,利用fgesl滿足的多模速率方程,研究了ld的注入電流對fgesl輸出特性的影響。The test results show that different patterns of pd correspond to different demodulating signal waveforms, the pd phase angle in ac, and spectrum characteristics. therefore the pd patterns can be recognized by the uhf characters of different pd signals in gis
試驗結果表明,不同缺陷類型的局部放電在其檢波信號波形、局部放電工頻相位分佈和超高頻頻譜特徵是有所不同的,可以依據這些特徵對gis內的局部放電類型進行識別。Design and experiment of acousto - optic waveguide phase modulator in electro - optic integrated acceleration seismic geophone
光電集成加速度地震檢波器中聲光波導相位調制器的設計與實驗This paper put forward the realization method of a kind of multi - function general use inverter system which added other functions based on the independent sine wave inverter, it not only can be used as independent inverter power supply but can be used as an in - support mode ups which realize synchronous with the phase of power grid voltage and realize to switch with power grid mutually, it also can realize three phase ac output by the combination of three synchronous inverters, experiment proved it in this way has a stronger ability of resisting three phase unbalance load
本文提出了一種基於獨立正弦波逆變器的功能之上復合其他功能而成的多功能通用逆變電源系統的實現方法,此系統不僅可以作為獨立逆變電源使用,還可以與電網電壓的相位同步,作為后備式正弦波ups使用,在逆變電源和電網的相互切換時能做到對負載無影響,同時還可以由三臺逆變器進行組合自同步實現三相對稱交流輸出,實驗證明這種方式具有較強的抗三相不平衡負載的能力。Adaptive antennas [ right ] use an array of emitters [ with delayed phases ] that make the waves ' peaks and troughs add constructively
通過相位后移,使電波的峰、谷部分分別相加(而不是因為相位錯開而局部抵消) 。The relation of phase between reflection electromagnet wave and incidence electromagnet wave on the boundary
界面處反射電磁波與入射電磁波的相位關系Abstract : on the basis of two elementary postulates of the theory of relativity and inferring process of lorentz transformation on time and space, the present paper deals with the general phase invariability of electromagnetic waves, which clearly reveals the inner link between the phase invariability of electromagnetic waves and elecmentary postulates of the theory of relativity as well as lorentz transformation on time and space
文摘:根據相對論的兩條基本原理和時空洛侖茲變換的推導思路,論證了普遍的電磁波相位不變性.清楚地揭示出電磁波的相位不變性和相對論的基本原理及時空洛侖茲變換的內在聯系分享友人