時差濾波 的英文怎麼說

中文拼音 [shíchā]
時差濾波 英文
moveout filtering
  • : 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...
  • : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
  • : 動詞(除去液體雜質) filter; strain
  • : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
  • 時差 : 1 [天文學](平太陽時和真太陽時的差)equation of time2 (不同時區之間的時間差別)time difference時...
  1. By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw

    利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw形參數中最為重要的脈沖寬度進行了分析,給出了更為嚴格的約束條件,保證了信號處理后距離譜峰值的唯一性。最後,分別介紹了fmpcw和fmicw信號的不同處理方式,並對兩者不同的性能進行了比較,並對二者的異進行了分析。
  2. This multi - purpose optical metering system had adopted the twyman - green interferometric system as its center, containing an advanced digital wave surface interferometry and a kind of homodyne interferometer displacement testing method with nanometer - sized capacity. at the same time, many wide - applied metering technology, for example, the diffracted field ( fringe ) measurement, co - focal lens system, optical fiber sensors and 4f ( focal distance ) space filter system which can embody the chief principle of fourier optics well, were combined into it successfully. this instrument can firstly offer and show modern optical testing method in the laboratory for majors of information processing, instrument science, measuring and testing technology and automatic technology

    該多功能激光光電實驗系統以泰曼-格林干涉( twyman - green )光路作核心,包括先進的數字面干涉技術和一種基於空間干涉原理的、納米解析度零干涉儀位移測量方法,同將多種新穎、工程實用價值高的測量技術和光路如衍射測量、共焦顯微技術、光纖傳感技術以及反映傅立葉光學基本光學原理的4f空間系統也組合進去。
  3. The specific research methods are listed : 1. matched filter taking the max ouput snr as the best rule correlates nonstop divided signal and divided echo to detect low snr target signal. then all one dimension divided correlation outs and done fft in portrait to leach interferential signal such as static or low rate mussy meaves, many pathway echo and so on and to take target ' s time difference and doppler frequency that combine parameters that target ' s direction taken from antenna and so on to implement target ' s orientation and tracking

    具體研究方法如下: 1 、採用以輸出信噪比最大為準則的最佳匹配器來對分段的參考和目標信號作相關處理來檢測低信噪比目標信號,然後對一維分段相關輸出組作縱向傅立葉變換來除靜態或低速的雜、多徑回等干擾信號,並提取目標的和多普勒頻率,再結合由天線獲得的目標方向等參數,就可以實現目標的定位和跟蹤。
  4. The first algorithm is low precise but simple and credible, the second is high precise but complex and incredible. 4 ) developed four kinds of methods aimed to improve precision and credibility of navigation system. the first is parallel sandia inertia terrain - aided navigation ( psitan ) ; the second is tercom + sitan, it can restrain two important disadvantages of sitan ; the third is particle filter - based terrain - aided navigation ( pftan ), the particle filter can reduce the error of navigation ; the last is tercom + pftan, where tercom is looked as monitor to ensure the credibility of navigation system

    採用并行sitan方法來提高導航精度,並克服奇異值問題;提出了tercom + sitan方法,綜合利用兩者的優點,在保持sitan導航精度的前提下,有效地克服了sitan的兩個缺點;提出了一種基於連續蒙特卡洛(常被稱為particlefilter )的地形匹配演算法( pftan ) ,有效地克服了利用sitan由於地形隨機線性化帶來的誤,使導航精度有較大的提高;提出了tercom作為監視器的地形輔助導航思想,並將其應用到連續蒙特卡洛方法上,較大地增加了系統的可靠性和精度。
  5. The equations of the mean value functions and the covariance functions are established for dynamical systems whose inputs are fuzzy stochastic processes. an existence and uniqueness theorem of ito fuzzy stochastic differential equations is proved, some explicit representations of solutions and the equations of statistical characteristics are deduced for linear fuzzy stochastic differential equations, and numerical methods to nonlinear fuzzy stochastic differential equations are proposed, the conditions for stability and observability of fuzzy linear systems are derived. the kalman filter algorithms of linear fuzzy stochastic systems are brought forward

    主要成果包括:提出了模糊隨機變量協方和反向協方的概念;研究了二階模糊隨機變量的均方收斂性,並在此基礎上得到了均方模糊隨機分析、平穩模糊隨機過程及其譜分解的若干定理;根據均方模糊隨機分析理論,得到了輸入為模糊隨機過程的線性系統的輸出輸入統計特徵關系方程;證明了ito型模糊隨機微分方程解的存在唯一性,並給出了ito型線性模糊隨機微分方程解的表達式,統計特徵方程以及非線性模糊隨機微分方程的數值解法;得到了模糊線性系統的穩定性和可觀性條件、線性模糊隨機系統統計特徵方程和線性模糊隨機系統的kalman演算法;研究了當觀測值是模糊數據,線性回歸模型的建立。
  6. The signal process function of the software include these function : digital filter, windowing, auto - correlation function and cross - correlation function, mean and variance, probability density function and probability distribution function statistic ; auto - power spectrum, cross - power spectrum, frequency response function, coherence function, cepstrum analysis based on fft ( fast fourier transfer ) ; joint time - frequency analysis based on stft ( short - time fourier transfer )

    軟體的處理功能包括:數字域加窗、自相關與互相關處理、均值和方計算、概率密度和概率分佈函數計算;在快速傅立葉變換( fft )基礎上計算自功率譜、互功率譜、頻率響應函數、相干函數、倒頻譜分析;基於短傅立葉變換( stft )的聯合頻分析等。
  7. The algorithm can not only eliminate the influence of the cumulative errors of the photoelectric code recorder, but also it can satisfy the requirement of the real - time control. a direct inverse model controller of fuzzy neural network with changeable structure based on takagi - sugeno inference is presented and it is used to the motion control of mobile robot. in order to avoid the obstacles successfully, detection results from ccd and ultrasonic sensors are fused by a fuzzy neural network, which acts as an avoidance controller

    包括移動機器人的融合自定位問題:移動機器人利用光電編碼器進行自定位,同用擴展卡爾曼器融合多個超聲傳感器的測量值,採用回朔演算法將融合值用於復位光電編碼器,消除了光電編碼器累積誤的影響,並能滿足實控制的要求:並提出一種基於takagi - sugeno模型的變結構模糊神經網路直接逆模型控制器,並應用於移動機器人的運動控制;利用模糊神經網路避障控制器融合ccd攝象機與超聲傳感器探測到的環境信息,以實現機器人的安全避障。
  8. A method, called r / s analysis, is employed to improve the estimate accuracy of the hurst exponent. the simulation results show the method mentioned above is also an efficient filter

    針對hurst指數的估計誤較大的問題,本文引入r s分析法,模擬研究表明該方法在提高hurst指數估計精度的同提高了wls法的效果。
  9. System error is estimated with kalman filtering algorithm in real - time data processing and post - flight data processing

    用kalman演算法以實數據處理和事後數據處理方式估計系統誤
  10. Firstly, the mathematical method, wavelet transform of random error processing and kalman filtering algorithm of system error estimation, is designated ; the process of development of wavelet transform and its present research is recommended ; and, the definition and development situation of real - time data processing and post - flight data processing of trajectory measurement data is summarized briefly

    首先指出了應用的數學方法,即處理隨機誤的小變換方法和估計系統誤的kalman演算法;介紹了小變換方法的發展過程和國內外的研究現狀;綜述了彈道測量數據的實數據處理和事後數據處理的概念和發展狀況。
  11. Abstract : in this paper a new identification model constructed by neural networks with modified inputs and stable filters is presented for continuous time nonlinear systems in order to reduce the inherent network approximation errors. an adaptive law with projection algorithm is employed to adjust the parameters of networks. under certain conditions, convergence of the identification error is proved

    文摘:在用神經網路進行系統建模,建模誤的存在是難免的.為了減小這種誤,本文對連續間非線性系統提出了一種新的神經網路辨識模型,它是由帶有輸入修正的神經網路和穩定器組合而成.文中給出了權值的學習演算法,即權值是根據辨識誤的投影演算法來改變,證明了在一定條件下辨識誤的收斂性
  12. Through the theory of light radiation and intensity, we can use the fewest leds to satisfy the luminous intensity demand. through image segmentation theory, we can accurately pick module up from the test stripe when it is put in wrong directions. through image processing theory, we can acquire correct information and avoid the bad effects from the asymmetric chemistry reaction and instability of the devices

    用光的輻射和強度理論,我們計算出了獲得足夠圖像強度所需的最少光源;用圖像分割理論,我們在試紙條傾斜放置或有垂直方向上的偏移,準確地提取出了各模塊的數據;用平滑和均值理論,我們除了由於反應不均勻及硬體設備不穩定帶來的噪聲;用交遇區設計線性分類器的方法,我們降低了有限樣本設計線性分類器帶來的誤,提高了檢驗準確度。
  13. First of all, we bring forward the basic project of tadil, which adapts to combined operations. it is suggested to use tdma ( the abbreviation of time division multiple access ) as the working pattern and utilize the concept of mobile ad hoc network to construct the data link network. aiming at the impact of time delay on data link and the characteristic of cooperative combat under the command of director aircraft, this thesis applies a kind of kalman filtering algorithm in polar coordinates to compensate the error of time delay, and then does the transformation of target motion parameters to obtain the current information of target

    本文結合空軍裝備部某「十五」預研課題,圍繞著戰術數據鏈、多機協同多目標攻擊、超機動攻擊、空對地攻擊這四個方面展開了一系列的研究工作:本文首先給出了適應三軍聯合作戰的戰術數據鏈系統的基本方案,建議採用分多址的工作模式,並利用移動自組織網路的概念構建數據鏈網路,同針對數據鏈傳輸信息的間延遲特性和指揮機指揮下的多機協同作戰特點,應用一種極坐標系下的卡爾曼演算法對該傳輸延遲誤進行補償,並在此基礎上進行目標運動參數的轉換,以獲得目標相對于某無人機的當前運動信息,且利用模擬驗證了方法的有效性。
  14. 3. with comprehensive improvement of transponder including structural adjustment to lna ; optimization of ( phase locked loop ) pll filter ; structural adjustment to the transmitter and phase error adjustment to the intermediate frequency demodulation circuit, we have successfully enhanced sensitivity, expanded dynamic range, increased transmitting power and improved the spectrum purity ; decreased capture time for pll ; improved the signal quality after demodulation ; reduced its volume and power consumption. 4

    3 、對通信機的全面改進,包括lna結構的調整、鎖相環環路器的優化、發射部分結構的調整以及中頻解調電路的相調整,提高了系統的接收靈敏度、改善了本振的頻譜純度、減少了鎖相環的鎖定間、使中頻解調后的信號質量大為提高,同還減少了體積、節約了系統的功耗。
  15. In this dissertation, the data process ( dp ) subsystem and radar control program ( rcp ) subsystem of gbr simulation system have been studied and discussed. the main work and innovation of this dissertation is as follows : ( 1 ) track filter, the basic element of track system, has been researched. we analyze the advantage and disadvantage of common target kinematic model such as constant velocity model, constant acceleration model, noval statistic model

    本文是基於某gbr模擬系統的合作項目中,本人負責的數據處理子系統和雷達控製程序子系統的研究和開發的結果,主要進行的工作和創新有: ( 1 )基於跟蹤系統最基本的要素-跟蹤,分析了當前常用的微分多項式模型, cv與ca (常速與常加速)模型,間相關模型, noval統計模型,以及機動目標「當前」統計模型等目標運動模型的優缺點和雷達的觀測誤
  16. Because the high resolution on high frequency of wavelet package meets the feature of fingerprint containing abundant high frequency, we filtered the fingerprint preliminarily by means of wavelet package. while designing orientation filter, we introduced the square - circle transform to rotate filter, thus we reduced computing complexity and avoided imported errors

    具體地,結合指紋圖像中高頻豐富的特點,以及小包高頻解析度高的分析特性,選用小包對指紋圖像進行初;在設計方向,對器的旋轉引入了方?圓變換的方法,進而減少了計算的復雜度,同避免引入誤
  17. The regional spectral model component is a primitive equation model on a stereographic projection and uses sine - cosine series as horizontal basis functions. the regional component predicts deviations from the forecasting of the global morjel component

    區域部分的預報偏來自全球模式部分的預報,在區域范圍內,半隱式間格式、、初始化和水平擴散的應用都與偏有關。
  18. Kalman filtering just can fetch up the default, which can give the optimum estimation of signal under the condition of the minimum mean - square. and this method works in the time domain, the processing speed is fast, which make it be used in the real time signal processing

    當信號含有噪聲, kalman可以在最小均方誤條件下給出信號的最佳估計,而且是在域中採用第推方式進行,因此速度快,便於實處理。
  19. After discussing this kind of filter in this paper in detail, the grads algorithm in time domain and frequency domain is set up when the change of frequency is slow, so it means the algorithm only process the narrowband interference what it changes slowly

    論文對數字自適應外器進行了詳細的研究,建立了自適應外器的域和頻域的梯度演算法,該演算法的推導使用了外頻率變化緩慢的假設,這意味著該器只能夠處理慢變的窄帶干擾。
  20. According to the characteristic of digital adaptive heterodyne filter and the conception of interference counteraction, the paper presents a new structure to enable the filter track the interference signal precisely and control the width and depth of notch. through simulation, it is demonstrated that the new structure can suppress one or more interference signals and the filtering operation has little influence on signal spectrum

    論文利用數字自適應外器的特點,運用干擾抵消的概念,提出了一種新的結構,能使器精確跟蹤干擾信號,並能控制陷的寬度和深度,經模擬驗證,該結構的器能較好的抑制一個和多個干擾,同除干擾后對信號頻譜的損害較小。
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