零信號 的英文怎麼說

中文拼音 [língxìnháo]
零信號 英文
zero signal
  • : Ⅰ數詞1 (零數) zero2 (數的空位) zero sign (0); nought 3 (表示沒有數量;無) nil; nought 4 (...
  • : 號Ⅰ名1 (名稱) name 2 (別號; 字) assumed name; alternative name3 (商店) business house 4 (...
  1. In this article, double threshold, iteration is applied to improve segmentation algorithm based on signal energy, and short - time zero - crossing rate is proposed for the first time to determine the exact boundaries between different components of heart sound

    本文通過使用雙門限、迭代等方法,改進了基於能量的分段演算法,並首次引入短時過率以更準確地定位分段邊界。
  2. Partial wavelet coefficients ca n ' t be set zero when the threshold is undersize so parts of noises are retained and some useful signals will be taked off when the threshold is iusto major so parts of useful signals are lost. these cases result in dissatisfactory denoising

    如果閾值選取過小,那麼有一部分的噪聲小波系數將不能被置,從而在去噪后的中保留了部分噪聲息,使去噪的效果變差。
  3. Digital signal level 0 - digital signal level 3 ds0 - ds

    階數字和三階數字
  4. In the present design, step inputs are restricted to a few tenths of millivolt

    在目前這個設計中,階躍輸入限制在點幾毫伏以下
  5. Significant progress has been made since the late 1970 s with the use of microprocessor technology to telemeter the electrical signals from tipping - bucket gauges at outstations to the observatory headquarters

    自一九七年代後期起,天文臺採用了微處理器科技把翻斗式雨量器產生的由外站傳送回天文臺總部。
  6. Tacholess order tracking filtering for run - up or coast down vibration signal of rotating machinery based on zero - phase distortion digital filtering

    無轉速計旋轉機械升降速振動相位階比跟蹤濾波
  7. The signal generator null sensitivity affects the accuracy and resolution of measurement because the gyro is an integrating device.

    因為陀螺是一種積分裝置,所以發生器的位靈敏度影響測量精度和測量分辨度。
  8. Zero - cross circuit makes sure output synchronism signals drive silicon control

    檢測電路保證了輸出點同步驅動可控硅,降低電源污染。
  9. Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail

    針對一維單脈沖雷達體制,分析了地形目標回波特性;建立了地形跟隨雷達空地測距的幾何關系;利用雷達收發,導出了地形跟隨雷達和差接收通道的回波表達式,進行了波形模擬,得到了地形跟隨雷達的地面散射產生回波在時域中的特性;根據和差回波特性,闡述了差點檢測測距的原理和方法及工程實踐中的應用,並給出了真實雷達對外輻射試驗的結果,驗證了文中的模擬。
  10. The nonlinear filtering for nbi estimate - subtract assumes that the prediction error is dominated by spread spectrum signal and the background noise power is far below spread spectrum chip power, this assumption promises the low error ratio of chip decision but may not be attainable to digitalized dsss receiver in military communication environment, and does not coincide with the principle of dsss communication that decreases bit error ratio ( ber ) depending on spread spectrum gain, not on chip power

    在干擾估計抵消濾波中,以往的非線性濾波要求干擾抵消濾波后擴頻功率遠大於殘余噪聲功率,進而假設碼片判決的誤碼片率基本為,這一要求對軍用擴頻通是不利的,而且也不符合擴頻通利用擴頻增益降低誤碼率的原則。
  11. A novel low mechanical hysteretic ceramic capacitive pressure transducer has been made, by using of ceramic sealing technology ; integrate circuit ( ic ) technology and thick film plane fixing circuit technology. this transducer is made of a deformable ceramic diaphragm and a ceramic base plate, between which has an air cavum. a coaxial gold electrode was fired onto the diaphragm and the base plate

    本文利用新型陶瓷技術、集成電路技術和厚膜平面安裝電路技術,採用力學滯后的陶瓷和陶瓷密封材料進行設計製造了一種非充液乾式的電容式壓力傳感器,該壓力傳感器由較厚的陶瓷基體和較薄的陶瓷膜片構成,中間形成一空氣介質腔,在基座和膜片之間內置同軸的雙電極,組成兩個電容,當膜片承受壓力時發生位移,使電容量產生變化,經後置處理電路直接轉換為可輸出的直流電壓
  12. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發,提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲,在調制系數0 . 1 m 0 . 5情況下,控制移相角按正弦規律變化,使諧振電壓脈沖列的幅值追蹤參考正弦電壓,經過整流、濾波、低頻逆變,從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載,移相全橋具有超前橋臂電壓開通,滯后橋臂或者電壓開通( _ 0 )或者電流關斷( _ 0 )的軟開關特性,而低頻逆變器的各個開關均實現電壓條件下的開通與關斷。
  13. When the neutron decay constant is measured in the zero power assembly, the dt external neutron measurement system ( scintillator photomultiplier tube detector st - pmt ) may provide trigger - signal and time correlationship

    摘要在功率堆上進行了衰變常數測量實驗中,建立外中子源dt中子測量系統可以為物理診斷系統提供觸發和時間關聯
  14. In the second chapter, wavelet theory, which is the theoretic basis of embedded zero wavelet coding is introduced briefly, including wavelet transform " s local characteristics, multi - resolution analysis, discrete signal ' s fast decomposition and construction, wavelet and filter group

    第二章,對小波樹編碼演算法的理論基礎? ?小波理論作了簡要的介紹,包括小波變換的時頻局部特性、多解析度分析、離散的快速分解與重構以及小波與濾波器組的關系。
  15. Thirdly, in the environment of labview, several kinds of vis used for sensor signal test are designed, including wave generation, time domain measurement, filter disposal, frequency analysis, etc. after that, wavelet analysis in the application of one - dimensional signal de - noise is studied, threshold and translation invariance wavelet de - noise are realized, and wavelet de - noise vi for zero drift signal of the fiber optic gyro in fcs is designed using labview

    接著,在labview環境下開發了多種用於傳感器測試的虛擬儀器,具有波形發生、時域測量、濾波處理、頻譜分析等多種功能。隨后,研究了小波分析在一維消噪中的應用,實現了labview環境下的閾值法和平移不變量法小波消噪,並利用labview設計了飛控系統中光纖陀螺的小波消噪儀。
  16. Secondly, the pressure sensor made by motorola co. ltd. in usa is chosen as the key part of the pneumatic - electric transducer. thirdly, the signal processing system of the pneumatic - electric is developed

    第三,研製了氣電轉換器的處理電子系統,設計有調、增益調整、開關轉換擴展量程等功能。
  17. In the second method, wavelet transform is combined with modal transform, and transient travelling - wave signal is used. after three phase signals are decomposed into their modal components, the wavelet transform coefficient of ground mode can be used to identify approximate position of fault, and the wavelet transform coefficient of aerial mode is used for identifying arrival time of traveling - wave

    第二種方法將小波變換與模式變換理論結合起來,採用的是暫態行波,首先將三相轉換成模式分量,模分量的小波變換系數用於判別故障的大致位置,然後利用線模分量的小波變換系數來確定行波到達時間。
  18. The digital if signal is converted to zero if by digital down converter, then taken fft spectrum analysis with hann window in advance

    數字中頻首先通過數字混頻下變頻至中頻,然後作加海窗的復fft譜分析。
  19. He has served in different capacities at the hong kong institution of engineers hkie, and has been council member of the institution of electrical engineers, and member of the technical committee on signal processing theory and methods of the institute of electrical and electronic engineers ieee. he has been on the editorial board of a number of leading publications. he was associate editor for

    他亦參與多份權威刊物的編輯工作,曾於一九九七年至二年擔任《 ieee處理雜志》副主編;一至三年任《 ieee處理快報》副主編;現任《 hkie雜志》主編及《數據採集與處理雜志》編輯委員會名譽委員。
  20. Automobile parts - lighting and light signalling devices

    汽車件.照明和發光裝置
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