large-signal characteristics 中文意思是什麼

large-signal characteristics 解釋
大訊號特性
  • large : adj 1 （體積，空間，數量，規模等）大的，巨大的；（權限等）廣泛的。2 （心胸）寬廣的，度量大的；（...
  • signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
  • characteristics : 產品性能描述
  1. The development of single chips and analyzers at home and that of overseas compared, a kind of pocketable dual - channel and multi - function signal analyzer, based on dsp, are researched with the functions of dynamic analyzer, data logging acquisitor, start - up / coast - down analyzer and dynamic balancer, etc. and the functions data acquisition, storage, display and analysis of vibration signal are validated in practice, high - speed float point data calculation ability, large memory space and simple operation are the characteristics

    高性能單片機尤其是dsp功能晶元的採用及用戶技術要求的不斷提高，使得信號分析儀的功能越來越完善，在比較了國內外單片機和信號分析儀的發展現狀后，開發研製了一種基於浮點dsp晶元tms320c32的便攜式雙通道多功能信號分析儀，兼有動態信號分析儀、巡檢數采器、起停車分析儀、動平衡儀等多種儀器的功能。
  2. For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr

    本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。
  3. Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method

    在本設計中，採用高速的dsp處理器，實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法，實現了大電流信號的驅動輸出;採用485總線技術，組建了裝置主機與多探測器之間的主從式通訊網路，實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級選頻放大電路，採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術，實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元，設計了人機信息交互的介面;採用了模塊化的軟體設計方法，開發了裝置主機及探測器的軟體程序。
  4. In order to measure the characteristics of such semiconductor optical amplifier, we adopted a set of measurement system. this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components. such device presents good polarization insensitivity ( < 0. 9db ), wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power, the maximum fiber - to - fiber gain of 10db, lossless operation current of 50 - 75ma for different input signal light wavelength and power, large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db )

    與張瑞英博士一起，首次利用該種有源區結構制備出偏振不靈敏半導體光放大器，並在0 - 200ma注入電流范圍內獲得33nm的3db帶寬，在不同信號波長，不同信號功率0 - 200ma的注入電流范圍內，偏振相關損耗均《 0 . 9db ，在耦合差損為7db / facet的條件下，最大fiber - to - fiher增益達10db ，無損操作電流為50 - 70ma ，消光比達50db以上，而噪聲指數則低於8db ，最小可達4 . 6db 。
  5. With the characteristics of large ambient noise, very narrow bandwidth, low carrier frequency, great propagation latency and time - space - frequency variant multipath effect ( mpe ), the stochastic ocean channel has demonstrated the greatest complexity and difficulty for underwater acoustic wireless communications. among them multipath effect ( mpe ) is the most difficult obstacle that results in signal fading and inter - symbol interference ( isi )

    但是噪聲高、帶寬窄、載波頻率低、傳輸時延大、多途徑效應隨時間?空間?頻率變化等通道特性都會給有效、可靠的水聲通信帶來很大的麻煩，其中多途徑效應是最主要的困擾因素，它會導致信號幅度衰落和碼間干擾。
  6. Feng yue ( signal & information processing ) directed by professor hong jun the propagation characteristics of signals will be seriously affected by the ionosphere, especially the signals having a low band and large wideband

    電離層對星載sar特別是高解析度、寬帶sar的性能影響近年來已成為國際上的研究熱點之一，目前我國在這一研究領域研究較少。
  7. Dsp appliance develops more and more abroad because dsp integrates with embedded technology. along with the improvement of chip speed, every high speed digital signal processing technology becomes more and more convenient, and systemic real time quality comes to be ensure. because of the characteristics of complex arithmetic and large data, people seek incessant aim of finer digital signal processing arithmetic and higher speed processors

    特別是嵌入式技術與dsp技術的結合，更使dsp的應用向更深更高的方向發展。隨著dsp晶元速度的不斷提高，各種高速數字信號處理越來越方便，並為實現系統的實時性提供了有力的支持。
分享友人
分享到 Line

分享到臉書