脈沖延遲模 的英文怎麼說
中文拼音 [màichōngyánchímó]
脈沖延遲模
英文
pulse delay mode-
The phase matching and group velocity matching conditions of type - i and type - ii second harmonic generation ( shg ) are obtained according to the momentum and energy conservation laws. the group velocity delay of ultrashort pulse shg on clbo and the crystal length decided by the group velocity delay are analyzed and compared with bbo ' s
從動量守恆、能量守恆出發推導得出了超短脈沖倍頻的類、類相位匹配和群速匹配條件，對clbo晶體用於超短脈沖倍頻時的群速延遲以及由群速延遲決定的晶體長度進行了分析和數值模擬，並與bbo晶體進行了比較。In measuring distance, two common methods : pulse - counting and phase - shifting are compared and analyzed. we analyze and compare analog intervene method and time delay method according to their measuring precision and the measuring blind area to improve the measuring precision
對脈沖計數法中的兩種提高測量精度的插入法:模擬插入法和延遲線插入法的精度和測量盲區兩個方面作了分析和比較。4. demonstrating the structure and design of the counter + delay - line module, by which the pulse waveforms with given pulse delay and pulse width delay can be generated
4 .設計計數器+延遲線模塊的組成及方案，並據此實現根據觸發信號產生的具有一定脈沖延遲和脈沖寬度的脈沖波形數字信號。Based on the theory mode, the delay time between the beginning of optical illumination and the onset of lock - on switching was calculated, and the transiting speed of electrons, the traversing velocity of the current filament, was obtained as well. the calculated results matched well the experimental results. taking advantage of the ultra - fast response characteristics of the devices, si - gaas pcss ' s are successfully applied to the broadening test of nanosecond laser pulses
應用單極電荷疇模型數值計算了lock - on效應的光、電時間延遲和載流子的渡西安理工大學碩士學位論文越速度（絲狀電流穿越開關間隙的速度） ，所得計算結果與實驗測試結果基本吻a利川半絕緣gaas光屯導開關的超快光l匕11向應燈性，成功地應川下納秒激光脈沖展寬試驗中，證明了開關可廠泛應川在超快光電響應和光電反饋網路中。First, delay window is used to reduce influence of pulse disturbance and signal amplitude to measurement result. second, according to the feature that width of receiving signal is wider than disturbing signal, width differentiation circuit is utilized to distinguish receiving signal and disturbing signal. third, most of digital circuits are integrated into isplsi ( in system programmable large scale integrated chip ) 1032 so as to simplify design and to develop the stability and reliability of the system
關于提高系統的穩定性和可靠性問題：一是採用了延遲窗口接收技術，以盡可能減小干擾脈沖對測量結果的影響；二是根據接收信號脈寬比干擾信號脈寬要寬的特點，採用脈寬鑒別電路來鑒別接收信號；三是用可編程大規模晶元isplsi1032對系統大部分的數字電路進行了集成化設計，達到既簡化電路設計、又提高系統穩定性可靠性的目的。This dissertation introduces the work principles, hardware circuit structure and application of a pint - sized multifunctional radar echo generator, which can generate various waveforms needed. we can modulate the doppler frequency and adjust the time delay of the waveform to validate the performance the radar system
該設備體積小、操作簡便、便於攜帶，可模擬lfm 、 nlfm 、單頻、相位編碼等多種脈沖信號波形，具有較寬的多普勒調制和時間延遲調節功能，能有效驗證脈沖壓縮與信號處理單元的工作性能，準確評估雷達系統的分辨力、威力范圍等技戰術指標。Above all, the optical propagation characteristics in crystals are studied in detail. derived from impulse response and sampling theorem in electronics, we establish the mathematical model of pif constructed by a series of birefringent crystal retarders with arbitrary azimuths sandwiched between two polarizers
本論文首先深入分析光在晶體中的傳播特性，借鑒電學中的脈沖響應和采樣定理，建立由前後兩個偏振片之間夾放一系列角度任意延遲片構成的偏振干涉濾光片數學模型，並分析了其脈沖響應特性。Some usual measurement methods are introduced, and their advantages and disadvantages are also analyzed in detail. in view of the defects of the usual methods and the latest developments in bi - photon effect, an all - fiber - measurement system for ultra short pulse was designed in this work, based on the knowledge of nonlinear fiber optics, application of passive optic apparatus, optic - electric transformation, analog circuit, micro chip unit ( mcu ) and so on
針對常用方法的不足，結合近些年來雙光子效應的研究成果，我們採用雙光子探測器取代常用的非線性晶體，並首次利用光纖延遲取代空間光路延遲，綜合了非線性光纖光學、光無源器件的應用、光電轉換、模擬電路、單片機等知識，設計出了一套全光纖超短脈沖測量系統。分享友人