measurement system of noise 中文意思是什麼

measurement system of noise 解釋
聲功率與聲功率級
  • measurement : n. 1. 測量，計量，量度。2. 份量，尺寸，大小，寬度，厚度，深度（等）。3. 測量法。 measurement goods （按體積、容積計算的）體積貨物。
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  • of : OF ＝Old French 古法語。
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  1. Cosmic ray test was carried out to choose and optimize working parameters of full - length prototype and its data acquisition system, verify the electronics system about dynamic range, drift time measurement search window, charge measurement integral width, work stability and electronics grounding and noise. in experiment, acquired abundant experience with the solution of actual problem and verified their reliability of physical design. this lays the foundations for the successful construction of the besiii drift chamber and electrical system

    測試過程中我們調整了電子學的動態范圍、漂移時間和電荷測量參數驗證了電子學系統工作的穩定性、抗干擾能力及噪聲水平等並成功解決了實驗過程中遇到了問題。通過長時間的取數進一步檢驗了全長模型和電子學系統工作穩定性，驗證了全長模型及其數據獲取系統物理設計的可靠性，為漂移室和電子學系統的成功研製奠定了基礎。
  2. The development of one - wire technique, fieldbus technique and gprs wireless communication technique propose a perfect way of realizing intelligent distribution and measurement. moreover, dai and agent theory provide powerful theoretical support to improve the system ' s ability of intelligent identification, intelligent learning and anti - noise

    單總線技術、現場總線技術以及gprs無線通訊技術的發展為智能分佈和測控功能的實現提供了一套令人滿意的解決方案，而分散式人工智慧技術和agent理論為提高系統的智能判別、學習和抗干擾能力提供了有力的理論依據。
  3. Very weak signal was detected based on the property of chaotic system ' s sensitivity to initial conditions, and noise was reduced by coupling chaotic measurement circuits

    摘要利用混沌系統的初值敏感性來測量極其微弱的信號，並通過混沌測量電路耦合來抑制噪聲。
  4. Finally, coupled chaotic system is realized to measure the fluctuation of magnetic field. meanwhile, it is proved that coupled chaotic system could be used to reduce noise. this experiment also finds an efficient approach for noise reduction in chaotic measurement

    最後把耦合混沌測量系統用於磁場測量中，實現用多個混沌電路耦合的系統測量微弱的磁場變化，證實了耦合混沌系統有較好的抗干擾能力的結論，為混沌測量的抗干擾措施找到了一條比較有效的途徑。
  5. 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 。
  6. An underwater sound intensity measurement system and its application to radiation noise measurement of underwater structure in the near - field

    水下聲強測量分析系統及其在近場測量中的應用
  7. In the first part of this paper, the theory of laser range and dds technology was introduced, the factors of influencing range precision were also analysed. at the same time, put forward in the paper, with using the fpga embedded technology, the wideband and high resolution sin modulating signals can be generated easily, then analysed the noise of the dds ; in the second part, the theory of phase measurement based on fft was analysed. in the phase range system, by using the fft operation, the resolution and sensibility of phase measurement can be enhanced ; then some circuits were designed and come true, also simulated and validated ; in last part, the improvement of the phase range system was brought forward, summarized and expected

    論文首先闡述了激光測距和調制信號源的基本原理，分析了影響測距精度的因素，指出應用dds技術可以實現寬帶、高精度的調制信號輸出，說明了引起dds輸出信號雜散的原因和解決的辦法;同時分析了應用fft運算實現信號相位提取的基本原理及設計方法，採用這種檢相技術，可以極大地提高測相精度與靈敏度;然後提出了基於fpga嵌入式系統的相位式激光測距機的整體設計，並就各部分進行了詳細的分析與設計;接著介紹了激光測距系統的外圍電路和基於quartusii集成軟體平臺的部分硬體電路的設計，並對其中的設計進行了模擬和驗證;最後總結提出了對系統今後的進一步改進和完善的思路。
  8. For eliminating random disturbance in the measurement system of dielectric loss, elaborates application on the theory of hard threshold value de - noise based on the wavelet transformation in the measurement system

    針對介質損耗測量中存在的隨機干擾，闡述了基於小波變換的硬閾值消噪理論在測量系統中的應用。
  9. This paper designs a measurement system and measures the main properties of power line practically. the characteristics of power line are analyzed in detail, and a power line channel model is presented which consists of the parametric transfer function model and the simulating model of background noise, narrow noise and impulse noise. simultaneously the simulating method on the computer is presented

    本文設計了一個測量系統對實際電力線通道的主要特性進行了測量，詳細分析了電力線的信號傳輸特性和噪聲特性，給出了一個實用的室內電力線通道模型，包括參數化的傳輸函數模型以及背景噪聲、窄帶噪聲和脈沖噪聲的近似模型，並給出了計算機模擬實現方法。
  10. Selecting the image elements of earth and moon centers as observed quantity, measurement noise model and observed equations of autonomous navigation system are built up. the spacecraft orbit is determined by using the recursive weighted least square based on ud factorization

    在奔選取地心和月心像素作為觀測量，建立了符合實際情況的量測噪聲模型和自主導航系統的觀測方程，並利用基於ud分解的遞推加權最小二乘演算法估計了奔月探測器的軌道參數。
  11. Traditional inertial mechanized - platform uses velocities to damp the system attitude to improve the precision of attitude, when the system acceleration is small. referring to the idea, this paper designeda damp kalman filter in strap - down attitude heading reference system ( ahrs ). the new method makes use of 3 - d accelerometer ' s measurements to estimate the system attitude, which is measured to compensate attitude errors. because the acceleration affected the precision of fiher directly, the fuzzy adaptive system was presented. the fuzzy logic inputs are three accelerations and the output is to control the measurement noise covariance matrix. simulations and experimental results prove that the damp algorithm can damp most of schuler oscillation and foucauh oscillation, so that to assure the filter convergence and efficiently improve the precision of strap - down ahrs

    在系統機動性不強的情況下，傳統的平臺內阻尼演算法將系統本身的速度信息通過阻尼網路加到系統中，達到提高姿態角精度的目的.將這種平臺內阻尼的思想引入到捷聯慣性航姿系統中，在系統加速度較小的情況下，利用加速度計的輸出估計系統姿態角，通過卡爾曼濾波的形式補償系統姿態誤差.由於加速度的大小直接影響濾波器精度，本文設計了模糊自適應卡爾曼濾波演算法，根據三軸加速度計的輸出調整內阻尼量測誤差方差陣，從而避免了濾波器的發散.模擬和實驗驗證，內阻尼演算法可明顯抑制舒勒周期振蕩和傅科周期振蕩，避免了系統姿態漂移，有效提高了捷聯慣性航姿系統的精度
  12. It processes these data that gathered from the optical measurement system or other 3d measuring apparatus directly without the preprocessing of wiping off noise points. user can define the resolution of the exported triangle mesh through setting a few parameters. it still can process other information of the points of cloud except for the x, y, z coordinates, such as color information ( rgb )

    它可以直接處理來源於光學測量系統或者其他的一些三維測量系統的數據，而不用經過去除雜點的數據預處理過程；輸出三角形網格的解析度可以由用戶通過設置一些參數來進行控制；這個演算法還可以處理一些來自於點雲的點所帶的除了（ x ， y ， z ）坐標以外的一些信息，比如說顏色信息（ rgb ）等；此外我們還提供了幾種可以實現的紋理映射（ texturemapping ）的思路。
  13. In the study of environment model - based processing, the thesis presents a signal enhancement method based on combination of the ocean acoustic propagation, measurement system and noise models. furthermore, a signal enhancement algorithm is developed on the basis of the model - based identifer ( mbid ) implemented by the the augmented gauss - markov process and corrsponding extended kalman filter

    本文通過了對模基信號處理實現信號增強的理論研究，提出了一種利用傳播模型、噪聲模型和陣測量模型、並注重環境信息來實現水聲信號增強的方法，繼而實現了基於增廣高斯?馬爾可夫過程和相應的擴展卡爾曼濾波聯合的模基辨識器的信號增強演算法。
  14. At first, it describes structure of the full - length prototype, manufacturing craft and prepare to work, including sting, sealing, wire tension and leak current measurement, mounting of the preamp, gas system, high voltage system, reduction of noise and so on. the construction of full - length prototype provided valuable experience and important reference to the besiii drift chamber. then good function of the full - length prototype was performed using 55fe 5. 9kev x _ ray source. we can see that the uniformity of gas gain of the full - length prototype is well and it is effective for the compensation voltage to adjust the uniformity of gas gain of the boundary cells

    為了初步測試模型的性能用55fe5 . 9kevx射線進行了氣體增益的均勻性檢測，隨之用55fe5 . 5kevx射線初步測試了模型性能，對部分高壓和補償電壓的設置進行了調整，驗證了對邊界場絲層加補償電壓能夠有效地調節邊緣層氣體增益的均勻性，實驗結果表明全長模型能正常工作並具有良好的性能。
  15. 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。
  16. This paper is a part of scientific research item " coupling of sound and cement bond logging of shipping hermetic cabin and the influence of multi - variable environment simulative hermetic cabin to body ". it mainly studied the measurement and control system of the simulative hermetic cabin to realize the adjustment of temperature, humidity, stress, oxygen, carbon dioxide, vibration and noise etc. and the parts of system design to the hermetic cabin and corresponding have carried on the technology explanation

    本論文是「船舶密封艙內的聲固耦合和多變量環境對生理功能的影響」科研項目的子課題，主要對模擬密封艙的測控系統進行研究，以實現密封艙對溫度、濕度、壓力、氧氣濃度、 co _ 2濃度、振動和噪聲等變量的調節。
  17. How expounded testing and controlling seven variables such as temperature, humidity, stress, oxygen, carbon dioxide, vibration and noise etc. it is different from single variable environment simulate hermetic cabin before, this paper expounded the basic component of multi - variable environment simulation hermetic cabin and the work principle of measurement and control system to develop of it, it advanced the method of the preset checkout and the jointly control of multi - variable such as temperature, humidity, stress, oxygen, carbon dioxide, vibration and noise etc, it has been designed to realize computer measurement and control of environment simulate hermetic cabin

    具體介紹了多變量環境模擬密封艙的基本組成和測控系統的工作原理，闡述了如何對所給定的溫度、濕度、壓力、氧氣濃度、 co _ 2濃度、振動和噪聲等七種變量進行檢測和控制。與以往單一變量環境模擬密封艙不同的是，本文對所研製的多變量環境模擬密封艙的基本組成和測控系統的工作原理進行了闡述，提出了對所給定的溫度、濕度、壓力、氧氣濃度、 co _ 2濃度、振動和噪聲等多種變量的檢測和聯合控制的方法，設計並實現了環境模擬密封艙的計算機測控。
  18. The signal - to - noise ratio of the nondestructive testing system employing optical heterodyne and ultrasonic techniques is analyzed and calculated from two aspects including phase matching of optical heterodyne measurement in nondestructive testing and the effects of beam incidence on the intensity of heterodyne signal and signal beam

    對光外差超聲無損探傷系統的信噪比從兩個方面入手進行了計算分析:第一，光外差測量在無損探傷中的相位匹配;第二，光束入射角對信號光光強和外差信號強度的影響。
  19. The control objective of this method can be a time variant function or an equilibrium, this method is not affected by the initial condition of the system, the method also demonstrates robustness against model error and measurement noise

    該方法的控制目標可以是時變函數或平衡點，控制不受初值限制，對模型誤差和測量噪聲具有一定的魯棒性。
  20. The precision and convergence of both rotor speed and flux estimation with ekf largely depend on the accuracy of the models of system noise and measurement noise. a global optimized noise covariance estimation method based on genetic algorithms ( ga ) is applied to ekf in foc system, a ga training simulation system of optimal parameters of ekf is given and the simulation results proves the effectiveness and robust of this algorithms

    本文用遺傳演算法（ ga ）對全閉環矢量控制系統中的ekf噪音模型進行離線優化辯識，模擬結果表明， ga尋優到的噪音模型使採用卡爾曼濾波器的無速度傳感器矢量控制系統獲得了與帶速度傳感器矢量控制系統相類似的動態性能，全系統對消息噪音和測量噪音有好的魯棒性。
分享友人
分享到 Line

分享到臉書