系統噪聲指數 的英文怎麼說

中文拼音 [xìtǒngzàoshēngzhǐshǔ]
系統噪聲指數 英文
system noise figure
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. This paper has launched exhaustive analysis and study to every module of pll and its key part ( vco ) is also improved. the history of phase - locked technology and the actuality of research on it are introduced. and then beginning with the fundamental principles of a phase - locked system, we build the mathematical model based on the architecture of the traditional analog pll, and afterwards investigate some of its characters such as tracking, acquisition, noising, and stability

    本文在對鎖相技術的發展歷史和研究現狀調查研究的基礎上，從鎖相系統的工作原理入手，分析了鎖相環的數學模型，並以此為出發點對其跟蹤性能、捕獲性能、穩定性及噪聲性能等性能進行了較為深入的研究，對環路的各項參數指標進行了詳細的推導，得出了鎖相環數理分析的普遍結論。
  2. 5 a multi - thread software cooperated with smp ( 2 cpu ) hardware performs the image - preprocessing correlation and post - processing synchronously, thus an automatic working module is realized. 6 systematic designed software, including grabing sarnies constructing rfl diging roi, and trainning ann offline and inline modules, has passed the practical tests which indicates that the opr could reach the recogniton possibility above 85 % and decrease the false alarm in the environment of high noise low contrast and multi - objects. and these are proved stable and repeatable in statistics, and so an advanced progress toward practical systems is achieved

    6 、系統化設計的軟體，包括了樣本採集、參考濾波器庫構成、相關平面的roi採集，以及ann脫機訓練、 ann聯機運行的軟體功能模塊，在實時運行的測試結果中表明了該opr系統對處于高噪聲、低反差、多目標的惡劣條件下，對三維畸變目標的判識率（ > 85 % ） ，降低了虛警率，並通過大量的實驗數據證明了該系統各項指標的穩定性和可重復性（從統計意義上講） ，向實用系統邁進了一大步。
  3. By virtue of the stochastic bifurcation theory, the transition of the atom movement at a crack tip in fatigue damage system is investigated. using the singular point theory of one - dimensional diffusion process and the stochastic averaging approach of energy envelope, a micro - model to describe the atom movement at the crack tip in homoclinic bifurcation fatigue damage system, which is in the presence of stochastic perturbation, is established. after the study on the characteristic of the diffusion exponent, the drift exponent and the character exponent of the fatigue damage diffusion process on singular boundary, the bifurcation behavior of a homoclinic bifurcation fatigue damage system, which is in the presence of parametric white noise, is examined

    採用隨機分叉理論，探討疲勞損傷系統裂尖粒子運動性質突變.利用一維擴散過程的奇點理論，並結合能量包絡的隨機平均法，建立了隨機擾動的疲勞損傷同宿分叉系統裂尖粒子運動模型，通過研究奇異邊界的擴散指數、漂移指數以及特徵指數特性，考查疲勞損傷裂尖粒子運動的同宿分叉系統受參激白噪聲影響的分叉行為
  4. Parameter - tuning stochastic resonance ( psr ) is a more realistic way to handle the phenomenon of sr in a broad sense. based on the theory of psr, some key problems of using sr in signal processing are studied, these issues include : the application of intrawell sr in multi - frequency analog signal processing, recovery of the waveform distortion caused by the bistable system and other post treatments, measure of system performance with multi - frequency analog digital input and measurement of system performance of binary digital input. the results are used in signal detecting under the background of the real sea noise

    隨著參數調節隨機共振（ psr ）概念的提出，隨機共振在信號處理中的應用有著很大拓展的空間，本文就主要研究幾個目前隨機共振在信號處理中應用時經常碰到的問題，其中包括阱內隨機共振現象對多頻模擬信號處理的應用、雙穩態系統輸出的波形畸變的消除及其他后處理、適用於多頻信號的輸出性能衡量指標、二進制數字信號輸入情況下的系統輸出的性能衡量，並將所得的結果應用到了一個自然界的噪聲? ?海洋噪聲背景下的信號檢測中，這些研究對于隨機共振理論的進一步發展及其在非線性信號處理中的應用具有重要的意義。
  5. This thesis designs automobile braking performance inspecting and control system. this thesis consists of three main parts. something about automobile braking system design has been discussed in the first part according to the main requirement of gb7258 - 2004 《 the requirement for motor vehicle, running safely 》. the hardware has been designed according to the characteristic of the parameter afer establish the whole plan for inspecting it. and then working principle of each part has been introduced. and at last, we designed software depending on the require to inspection and function. we can educe the braking power of both wheels, braking moment retardarce power and other parameters. we designed sensor signal processing circuit which including power sensor signal processing circuit and speed signal measure circuit according to the require of designing parameter. ad620 is used as power sensor. in order to measure the power of the automobile braking and protect the electromotor. so we must measure both

    由汽車制動測試原理以及制動性參量檢測的技術指標可知，檢測數據準確性、控制可靠性、實時性和抗干擾能力是系統設計的關鍵。本文在掌握汽車性能檢測系統結構和原理的基礎上，根據國家有關標準和汽車制動性檢測系統的控制邏輯提出了採用單片機為控制器的總體方案，設計了各部分硬體電路，並根據所要實現的功能用c51語言設計了軟體。由於檢測現場存在各種干擾噪聲，為了保證系統運行的穩定性和可靠性以及測量精度的要求，分別從硬體和軟體的角度出發，介紹了常用的硬體抗干擾措施以及軟體數字濾波的原理和方法。
  6. Two conclusions about suspending control system are given in this paper : 1. the single suspending system controlled by parameter self - turning control algorithm has better performance when the mass of single point suspending system, the resistance of electromagnet and the suspending gap are variable ; 2. the single suspending system controlled by global asymptotic stability control algorithm is global asymptotic stability and can restrain the stochastic noise

    通過對採用上述控制演算法的懸浮系統的理論分析和模擬研究，主要得到了以下幾方面結論: 1 .當系統懸浮質量、電磁鐵電阻和額定間隙參數變化時，設計的參數自校正控制演算法可使系統的動態性能指標保持在設定的指標; 2 .設計的全局穩定控制演算法，能夠保證二級結構單點懸浮系統的全局漸近穩定，且對隨機噪聲干擾有一定的抑制作用。
  7. This method can guarantee the solution matrix of sylvester equation to be inverse and the sum of the input gain norm and the observer gain norm is the minimum. for the linear systems with unknown parameters, we identify the parameters using hopfield network, then design the observers using the identified parameters, the exponential convergence of adaptive observer is also proved. for the linear time - varying systems, a new network to solve the time - varying sylvester equation is proposed, we analysis it ' s convergence and robustness, then, deign the linear time - varying observer using this network model, and we discuss the convergence of the observer and ruboustness to unknown match parameters

    同時保證了sylvester方程的解矩陣的可逆性和觀測器的增益矩陣與輸入矩陣范數的和最小；在設計線性時不變自適應觀測器時，首先利用系統的輸入、輸出數據設計一個hopfield網路參數估計器，進一步設計狀態觀測器，證明了參數估計器和狀態觀測器的指數收斂性；為了仍然從神經優化計算的角度設計線性時變系統的狀態觀測器，最後介紹了一種求解時變sylvester矩陣方程的神經網路模型，分析了它的收斂性和魯棒性，然後利用該網路設計時變狀態觀測器，進一步討論該觀測器的在系統存在未建模不確定和外部噪聲時的魯棒性；最後給出了一種基於分離性原理和hopfield網路觀測器的狀態反饋閉環系統的結構，分析了該閉環系統的特點；對于每一種設計方法都給出了相應的數值模擬例子來進一步表明所提方法的可行性和有效性。
  8. Use eda software to simulate the optimization z sand z l in pa designation. 3. theoretically deep analysis is made which is about the method of lna design, analysis the affect of noise figure and input vswr to the system sensitivity and the contradiction between the two parameter

    3 .從理論上低噪放設計方法進行深入的研究，系統的分析低噪放的輸入駐波比和噪聲系數這兩項指標對接收機系統靈敏度的影響以及兩者之間的矛盾。
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