echo pulse 中文意思是什麼

echo pulse 解釋
回波脈沖
  • echo : n （pl echoes）1 回聲，反響；共鳴，反映。2 重復，摹仿；摹仿者；應聲蟲。3 【音韻學】與上句末音押韻...
  • pulse : n 1 脈搏；有節奏的跳動；【動物；動物學】脈沖（波）；脈動。2 意向；傾向。3 【音樂】拍子，律動。vi ...
  1. Explain the characteristics of piezoelectric crystals and the factors relating to the resonant frequencies of a piezoelectric crystal, and the procedure of the pulse - echo method

    說明壓電晶體的特性和與壓電晶體的共振頻率有關的因數，以及脈波回波法的過程。
  2. This paper deduces the optimum threshold expression under certain cost rule and relationship between the number of pulse accumulation and the increased ratio of echo ' s snr

    本文推導了最佳門限電平的表達式和脈沖積累對回波信號信噪比的改善能力。
  3. Measuring thickness by ultrasonic pulse - echo contact method

    接觸式超聲波脈沖回波法測厚
  4. Standard practice for ultrasonic pulse - echo straight - beam examination by the contact method

    用接觸法做超聲脈沖回波縱波檢驗
  5. Standard practice for measuring thickness by manual ultrasonic pulse - echo contact method

    用人工超聲脈沖回波接觸法測量厚度的標準實施規程
  6. Method for assessing the overall performance characteristics of ultrasonic pulse echo testing instrument

    評定超聲脈沖回波檢驗儀綜合性能特徵的試驗方法
  7. Method for assessing the electrical characteristics of ultrasonic testing instrument using pulse echo technique

    採用脈沖回波技術評定超聲檢驗儀電氣特性的試驗方法
  8. Recommended practice for ultrasonic pulse - echo straight - beam tesing by the contact method

    接觸式超聲縱波直射探傷方法
  9. Method for measurement of ultrasonic attenuation coefficient of solid by pulse echo technique

    用脈沖回波技術測量固體超聲波衰減系數的檢測方法
  10. Commonly used specification for a - mode ultrasonic flaw detector using pulse echo technique

    A型脈沖反射式超聲波探傷儀通用技術條件
  11. The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided

    論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。
  12. Echo simulation of air pulse - doppler radar

    機載脈沖多普勒雷達回波信號模擬
  13. This thesis discusses the pulse doppler ( pd ) weather radar signal processing system including digital intermediate frequency ( if ) receiver, especially on the application of if sampling and digital demodulation technique in pd weather radar signal processing system, the influence of amplitude and phase unbalances of in - phase and quadrature channels on weather radar echo spectrum estimation, ground clutters elimination algorithms and a typical engineering realization scheme of pd weather radar signal processing system

    本論文研究的是採用數字中頻接收技術的脈沖多普勒氣象雷達信號處理系統，重點研究了中頻采樣及數字解調技術在脈沖多普勒氣象雷達信號處理系統中的應用、正交雙通道幅相不平衡對氣象回波譜估計的影響、地雜波濾波演算法，以及脈沖多普勒氣象雷達信號處理系統的具體工程實現。
  14. By means of the echo auto - searching algorithm, the automatization of signal processing is realized. the filter algorithms are given to eliminate electric and pulse noise, the measuring reliability is improved greatly. furthermore, the accuracy of time difference measure is improved greatly by using the correlation algorithm and the wavelet algorithm

    提出的自動搜索回波演算法，實現了回波數據處理的自動化;給出的改進滾動去極數字濾波演算法和極值濾波演算法，消除了電噪聲和脈沖噪聲，提高了測量的穩定性;提出的插值相關流量測量演算法、小波包絡壓力測量演算法大大提高了測量的精度。
  15. The system accomplishes ultrasonic pulse transmitting and receiving, signal amplitude adaptive adjusting, data acquiring, echo searching, data processing and analyzing. different algorithms for echo searching, filtering and time difference measuring are proposed based on the thorough analysis of ultrasonic echo signal

    研製的超聲波液壓測量系統由超聲波探頭、超聲波收發系統、高速數據採集系統和計算機構成，實現了超聲波信號的發射、接收、自動增益控制、數據採集、自動搜索回波、數據處理、分析等功能。
  16. A high - speed sampling system for echo signal of impulse gpr based on equivalent time sampling method is presented, and significant circuits including step sampling pulse generator and sampling gate circuit are designed

    摘要提出了一種基於等效時間采樣方法的沖擊型探地雷達回波信號高速采樣系統，設計實現了等效時間采樣的關鍵電路，包括步進采樣脈沖發生器、采樣門電路。
  17. Standard practice for evaluating performance characteristics of ultrasonic pulse - echo examination instruments and systems without the use of electronic measurement instruments

    不用電子測量儀，超聲波脈沖迴音試驗制運轉性能的評估的標準操作規程
  18. Methods of measuring the performance of ultrasonic pulse - echo diagnostic equipment

    超聲波脈沖回波診斷設備性能的測定方法
  19. General methods of measuring the performance of ultrasonic pulse - echo diagnostic equipment

    超聲波脈沖反射診斷裝置性能測量的常規方法
  20. Chemical - shift magnetic resonance ( mr ) imaging is gradually accepted as a useful technique to distinguish benign adrenal lesions from malignant counterparts based on in - phase and out - of - phase gradient - echo pulse sequences

    摘要化學相差磁振造影中，順相及逆相脈沖序最之腫瘤訊號強度的變化，應用在臨床上分辨腎上腺良性或惡性腺瘤是有用且逐漸被接受的圖象診斷工具。
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