apd 中文意思是什麼

apd 解釋
氨基比林-n-脫甲基酶
  1. In the experimental system apd transferred laser pulse to weak electrical current. after two - level amplification we got a voltage pulse that had a enough amplitude to be applied, the timing point was discriminated by the constant - fraction timing discriminator circuit. timing circuits transferred the pulse flight time to digital signal accurately

    實驗系統採用apd作為光電傳感器，將激光脈沖信號轉變為微弱電流脈沖，經過兩級放大后，信號變為幅度較大的電壓脈沖，經過時點鑒別電路分別確定計時起點和終點后，由計時電路來精確測量兩個時間點之間的時間間隔。
  2. The thesis offers apd signal amplify circuit chart and controlling time - series logic circuit principle chart bearing practical applied value

    給出了apd信號放大電路和控制時序邏輯電路原理圖。
  3. The thesis analyses the problems on the noise of apd photoelectric receiving system. author designs apd laser signal receiving system circuits, front amplify circuit, controlling time - series logic circuits, dc / dc transform circuits. and takes apd bias voltage fuzzy control

    分析了apd光電接收系統的噪聲問題，並對apd激光信號接收系統電路、前置放大電路、控制時序邏輯電路、 dc / dc變換電路進行了設計，採取了apd偏壓模糊控制。
  4. In this thesis we have analyzed some kinds of single photon detector and their advantage and disadvantage firstly. then, the key apparatus ( ingaas - apd ) and its characteristics have been studied. we have tested the apds of perkinelmer, oki and photon company, and got some useful parameters

    其次，主要對量子通信用單光子探測器的核心器件? ? ingaas雪崩光電二極體（ ingaas - apd ）的暗電流特性、光電流、溫度特性、雪崩特性等進行了研究，同時把飛通公司、 oki公司、 perkinelmer公司的apd進行了比較，分別得出了它們的特性參數，為研製實用的紅外單光子探測器提供了重要的依據。
  5. Apd amplitude probability distribution

    振幅概率分佈
  6. The project adopts pulsed laser ranging in noncoherent detect mode, uses a 905nm pulsed laser diode as the laser source, detects object with a single apd, adopts an optics - mechanics scanner in object space to obtain images, and obtain distance images and intensity images of object simultaneously

    該研究方案採用直接探測脈沖激光測距體制，以波長為905nm的脈沖半導體激光器作為激光光源，利用單元apd探測器進行探測，採用物空間掃描的光機掃描方式進行掃描成像，能同時獲得目標的距離圖像和強度圖像。
  7. This paper introduces the experimental progress about the decision of the cms collaboration to construct a precision electromagnetic calorimeter with a new type photoelectron readout device ( apd ) and a new type crystal ( pbwo4 )

    摘要介紹了在中國參加的cms國際合作組用新型雪崩光電二極體和新型鎢酸鉛晶體構造新型電磁量能器實驗研究的進展情況。
  8. The hardware designation uses the msp430 micro controller unit as the control center. the rough and accurate values of the measurement are obtained by using cpld and adc devices. the analog circuits mainly included the modulating and driving circuit of the laser, receiving circuit and apd high - voltage biased circuit

    硬體設計以msp430單片機作為整個系統的控制核心;通過單片機控制cpld和adc來獲得粗測和精測值;模擬電路部分包括激光調制驅動電路和接收電路以及apd高壓偏置電路;進行串列通信電路和電源電路的設計。
  9. In the design of optical system, to improve system precision, the fiber optic coupler is added to make a laser pulse circle ; in the unit of photo detection, we make a high - precision temperature compensation apd bias circuit, which allows system to abate the noise caused by temperature changer and dark current

    應變測量系統主要由光源、傳感光纖、光電探測器和信號處理電路組成。在光學系統設計中為提高系統的精度採用了光纖定向耦合器實現光脈沖的循環；在光電轉換單元上採用高精度溫度補償的apd偏置電路，減小了溫度和暗電流帶來的噪聲干擾。
  10. Action potential duration, apd

    動作電位時程
  11. ( 5 ) using the method apd, it select a new drive signal s = x1 - cx3 to synchronize the response system, the theory analysis and numerical simulation results show that it can synchronize two hyperchaotic systems completely with the drive signal s = x1 - cx3, comparing with the method of selecting signal in literature [ 114 ], with the drive signal s = x1 - cx3, it can shortens the transient period of synchronization ( 6 ) using the outside standard signal to control 4d oscillator hyperchaotic system, basing on the stability theory, constructing the following lyapunov function it gets the controller as following : the theory analysis and numerical simulation result show : using the controller above, it can control the system to reach any desired stable point and period orbit

    （ 5 ）採用apd方法，選取新的驅動信號s x1一ex來同步響應系統，理論分析和數值結果表明：採用本文的驅動信號可以使兩個超混飩系統同步，和文獻1141相比，採用本文的驅動信號可使同步暫態過程更短。歷）利用外部標準參考信號個和o來控制振子超混燉系統，基於穩定性理論，通過構造l ） apunov函數， kgb （ xz4l4 ） 『 n ） l小t4 xzcko k0卜ro 』十個n xsn n一大0 『得到控制器表達式如下： u ； zr zr 。 （ 1 b ） 』 x 。
  12. The output noise and signal - to - noise ratio of avalanche photodiode ( apd ) are discussed in detail

    詳細研究了apd探測器的輸出噪聲和信噪比。
  13. The parties to the venture may contribute cash, capital goods apd industrial property rights, etc. as their investment

    合資企業各方可以現金、實物、工業產權等作為其投資。
  14. Established in 1998, apd services the global market with facilities in the us, canada, india and china

    Apd公司成立於1998年，在美國，加拿大，印度，和中國都設有分部或聯絡處。
  15. Many chaos secure communication systems presented in literatures is designed based on apd method, and some scheme take the system parameter as key

    論文通過對apd同步方法對參數的靈敏性的分析，發現低維混飩系統容易被重構。
  16. It shows that the apd in different company have different characteristics, even the same type apd in the same company have different characteristics

    研究表明，不同公司的apd特性有著明顯的差異，即使同一公司同一型號的apd的特性參數也不盡相同。
  17. The models of the laser emitting subsystem, the pin photoelectric receiving subsystem and the apd echo receiving subsystem of the laser system for identifying & communicating presented

    本文對激光識別與通信系統的激光發射子系統、 pin光電接收子系統和apd回波接收子系統建立了數學模型。
  18. Moreover, the scheme of mmw optically controlled phased array radar is presented also. at last, the matching - circuit and apd receiver circuit are designed. the curves of the system are shown respectively

    此外，本文還對l波段光傳輸鏈路實驗系統的性能進行改進，設計了前端匹配電路和apd接收電路，並給出相關電路的實驗結果和測試曲線。
  19. A technique, based on maximizing signal to noise ratio ( snr ) of the system, has been proposed. this method includes the determination of optimum wavelength of the laser and avalanche gain of the avalanche photodiode ( apd )

    （ 3 ）從分散式光纖溫度傳感系統的實際設計出發，選取了激光器最佳工作波長，對apd的最佳雪崩增益特性進行分析，得到了使系統信噪比最大的設計結果。
  20. Whereby the saturation caused by strong background light and the interference caused by background light in the pin receiving are solved, and a new method of compensation for bias voltage of some apd detector is put forward. the method of single - chip fuzzy control makes the compensation to be real time and intelligent

    據此解決了pin光電接收的抗強背景光飽和與抗背景光干擾的問題；用單片機模糊控制技術實現了某apd光電探測器偏壓補償的實時化和智能化。
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