群時延 的英文怎麼說

中文拼音 [qúnshíyán]
群時延 英文
envelope delay
  • 群 : Ⅰ名詞（聚在一起的人或物） crowd; group Ⅱ量詞（用於成群的人或物） group; herd; flock
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  1. This thesis elucidates and analyses the key techniques and rules of aolr in detail, and introduces its simulation modeling of the integrated system infrastructure and each function modules. through systematic simulation of aolr in the performance of packet delivery rate, average end - to - end delay, average route set - up delay, routing overhead, and etc, the key techniques and algorithms are testified and can provide reference for practical system design and application

    通過對基於蟻群優化的負載均衡路由協議系統的模擬，從數據分組成功遞交率、平均端到端時延、平均路由建立時延、路由開銷等性能的模擬數據和曲線上，分別驗證了該系統中的幾項關鍵技術和演算法。
  2. Differential group delay measurement of single - mode components and devices by the differential phase shift method

    利用微分相移法進行單模元器件和裝置的群時延差測量
  3. Nothing but a temporary stay of execution for your kind

    一事無成！只不過是延長你這種群茍延殘喘的時間而已。
  4. Such a model of egg production would be benefit this species to survive in this waters area and become a dominant species. for subitaneous eggs, in winter - spring with long hatching time, the females lay in nighttime in upper water layer. the distance for eggs sinking to the sea - bottom is also long

    對于滯育卵來說，雌體日間在海區下層水體產卵，可使得滯育卵快速沉至海底，縮短滯育卵在水體中的滯留時間，降低在水層中被攝食的風險，同樣也有利於個體的存活和種群的延續。
  5. 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。
  6. Enhancing dgd dynamic range of different formats by using filtering technique

    採用濾波技術提高不同碼型差分群時延動態范圍研究
  7. In this paper, difficulties such as the design of hts microwave passive component, the lithography technology, encapsulation and testing at low temperature etc. are solved. a hts delayline with center frequency at 4ghz, bandwidth of 4ghz is manufactured and tested. it ’ s group delay is larger than 10 ns

    本文在解決高溫超導微波無源器件的設計、光刻工藝、密封封裝和低溫測量等難點的同時，對一個f _ 0 （中心頻率）為4ghz ，帶寬4ghz的高溫超導延遲線進行加工、封裝、測量，群時延大於10ns 。
  8. Introduction and analysis of methods of measuring the group delay of frequency - translating devices

    頻率變換器件群時延測量方法的探討與分析
  9. In this paper, we study the performance of input - buffered atm switching with window - access scheme and output - grouping architecture. the close - form formulae of maximum switch throughput, mean cell delay and cell loss probability are obtained by probability generating function approach. the accuracy of theoretical analysis is verified by computer simulations and results show that the maximum switching throughput will reach 99 % under random uniform traffic when the window size and the group size are 4 and 16 respectively

    本文提出了具有組合的窗口接入和線群輸出結構的輸入緩沖atm交換網路並對其性能進行了研究.通過概率生成函數方法得到了計算該交換網路最大吞吐率，平均信元時延和信元丟失率的封閉表達式，並通過計算機模擬實驗驗證了理論分析的精確性.研究結果表明，在隨機均勻業務下，當窗口尺寸和輸出群尺寸分別為4和16時，最大吞吐率可達到99
  10. Group - delay characteristic of receivers for television broadcast transmissions

    電視廣播接收機群時延特性
  11. Methods of measurement for waveguides - part 3 : variation of group delay

    波導管的測量方法.第3部分:群時延的變化
  12. Differential group delay dg

    微分群時延
  13. By new the vector - mixer calibration technique has bees teed in our project, the test results show that vector - mixer slaved measuring absolute group delay of frequency converters successfully

    矢量混頻器技術已在工程中應用，測試結果表明，矢量混頻器技術較好地解決了變換鏈路絕對群時延的測量。
  14. 2. while the frequency of the incident microwave is getting closer to the frequency at which the resonant effect appears, the electric field in the middle of the slot is group delayed

    （ 2 ）當入射波載頻接近共振頻率時，孔縫中心耦合的電場強度存在群時延現象，群時延現象與共振增強效應同步發生。
  15. The dissertation presents the combined theoretical, numerical and experimental studies on the experimental modeling of the actuator, the design of test rig and control system, the modeling of two - dimensional airfoil aeroelastic system, the control design of active flutter suppression, and the effect of group delay in the digital filter on the stability of aeroelastic closed - loop system

    本文通過理論分析、數值模擬與風洞實驗相結合的方法，研究了超聲電機作動器建模、翼段顫振實驗裝置和控制系統設計、二維翼段氣動彈性系統建模、顫振抑制控制律設計以及數字濾波器群時延對顫振抑制閉環系統穩定性影響等問題。
  16. The definition and measurement techniques for group delay has been described and analysed in this paper, the new techniques, being called dine - mixer technique and vector - mixer calibration for measuring the absolute group delay of the frequency converters has been researched and analysed in detail also in this paper

    摘要描述和分析群時延的含義和測量方法，著重研究了變頻鏈路絕對群時延的測量方法，對三混頻器和矢量混頻器技術進行了詳細分析和論述。
  17. In the fifth chapter, a new fully differential operational amplifier with voltage and current - mode negative feedback has been proposed, which can stabilize its quiescent operation point, using the characteristic of mos transistors which operate in the triode region acting as active variable resistor, a fully differential fourth - order chebyshev low - pass filter with tunable frequency and bessel low - pass filter with accurate group delay based on r - mosfet - c and operational amplifier has been designed

    第五章：提出了一種新的既具有電壓共模負反饋又同時具有電流共模負反饋的全差分運算放大器電路，能較好地穩定電路的靜態工作點，並應用mos管工作在線性區可作有源可變電阻用的特性設計得到了截止頻率可連續調節的高性能r - mosfet - c 、運放結構切比雪夫（ chebyshev ）和精確群時延值貝塞爾（ bessel ）低通濾波器。
  18. In the seventh chapter, some of the above proposed new circuit, such as high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac and fully differential r - mosfet - c bessel filter with accurate group delay, high accuracy bandgap reference and high drive capability cmos operational amplifier have been applied in communication gsm baseband i / o port integrated circuit, all the above blocks meet well with the design requirements of the system, and gain the better testing results, in the mean time, the above proposed high accuracy bandgap reference circuit als

    第七章:將本文第二章提出的高速、高精度12位、 80mhz采樣率電流舵結構的數模轉換器和第五章提出的r一mosfet一c結構且具有精確群時延值的貝塞爾（ bessel ）濾波器以及第六章提出的高精度帶隙基準電壓源和高驅動能力全差分運算放大器電路應用於通信gsm基帶輸入/輸出埠晶元，滿足系統設計要求並取得了令人滿意的實測結果。
  19. Qos routing optimization approach with time delay constraint based on ant colony adaptive algorithm

    具有時延約束網路路由問題的自適應蟻群優化演算法
  20. The results of the test demonstrated that the system has a good performance in the linearity, dynamic scope, isolation, coherence of the amplitude. the group delay of the upmixers is 2ns, which is better than other domestic manufactures. because the inconsistency between the isolation and the phase coherence, and the error of the test method, we haven ’ t gotten the good performance of the phase coherence. the next work is improving the restrain of the filter to the lo signal and the phase test methods

    在單路發射通道上，群時延達到了2ns ，優于國內很多產品。三路通道之間的相位一致性由於測試方法的誤差以及隔離度指標的牽引作用，我們不能調試達到非常好的在相位一致性指標，再下一輪的工作中必須提高濾波器對本振信號的抑制度，改進相位測試方法以達到指標要求。
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