時變濾波器 的英文怎麼說

中文拼音 [shíbiànlǜbōqì]
時變濾波器 英文
time varying filter
  • 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...
  • 濾 : 動詞（除去液體雜質） filter; strain
  • 波 : 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...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 濾波器 : [電子學] electric filter; （electric） wave filter; filter
  1. Dsp chip is especially fit for digital signal processing, its main application is realizing all kinds of digital siginal processing arithmetics such as clove hitch 、 correlation 、 all kinds of transforms etc. realizing digital filters with dsp is an important application

    Dsp晶元是一種特別適合於進行數字信號處理運算的微處理器，其主要應用是實時快速的實現各種數字信號處理演算法，如卷積、相關以及各種變換等。其中，利用dsp來實現數字濾波器就是很重要的一種應用。
  2. 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濾波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濾除靜態或低速的雜波、多徑回波等干擾信號，並提取目標的時差和多普勒頻率，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。
  3. At present, the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory, these methods all require some transform and quick, real - time calculating, so high precision analog multipliers or high speed dsp chip with fast a / d are needed, this results in complex circuit and high cost ， which have restricted the development of apf

    目前畸變電流檢測常用的方法有頻域法的fft和基於瞬時無功理論的畸變電流檢測法。這些方法均有一定的變換，需要快速、實時運算，因此必須使用高速的數字微處理器和高性能a / d轉換器，這必將大大提高系統成本，使得電路結構復雜，在一定程度上限制了有源濾波器的發展。
  4. 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，同時用擴展卡爾曼濾波器融合多個超聲波傳感器的測量值，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差的影響，並能滿足實時控制的要求：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攝象機與超聲波傳感器探測到的環境信息，以實現機器人的安全避障。
  5. In the second chapter, wavelet theory, which is the theoretic basis of embedded zero wavelet coding is introduced briefly, including wavelet transform " s local characteristics, multi - resolution analysis, discrete signal ' s fast decomposition and construction, wavelet and filter group

    第二章，對小波零樹編碼演算法的理論基礎? ?小波理論作了簡要的介紹，包括小波變換的時頻局部特性、多解析度分析、離散信號的快速分解與重構以及小波與濾波器組的關系。
  6. Fir ( finite impulse response ) filter is one of the basic algorithms for digital signal processing, which is a kind of important lti discrete - time system, widely used in acoustic processing and image processing area

    Fir （ finiteimpulseresponse ）濾波器是數字信號處理的基本演算法之一，是一類較為重要的線性時不變系統，廣泛應用於聲音、圖像處理等現代通信技術中。
  7. 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時，建模誤差的存在是難免的.為了減小這種誤差，本文對連續時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濾波器組合而成.文中給出了權值的學習演算法，即權值是根據辨識誤差的投影演算法來改變，證明了在一定條件下辨識誤差的收斂性
  8. In the traditional wavelet transform, because the wavelet filter and coefficient is fixed, as a result, when the discontinuous signal is analyzed, it will produce a lot of big wavelet coefficients in the transition, which makes against the compression. in the image processing, some image is roughness, and it may has sharp edges and oddity parts

    由於傳統小波變換的濾波器長度和系數是固定不變的，不能適應輸入信號而變化，這使得在分析非連續信號時，在躍變點兩側會產生大的小波系數;對具有尖銳邊緣、分段光滑或奇異點、圖文混合圖像處理效果很差。
  9. 2, the optimal designed digital matched spatial filter ( dmsf ) was used to perform real - time optical correlation, which not only has the merit of large storage and renewability as well as common digital filter, but also has the virtue of high correlation s / n which the holographic optical filer owns

    2 、優化設計的數字空間匹配濾波器，既有數字濾波器的大存儲容量並可實時刷新的特點，又有全息光學濾波器高相關s n的優點。對于處于嚴重背景噪聲干擾下的多個畸變目標，也可獲得高相關s n 。
  10. 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，以及小波包高頻解析度高的分析特性，選用小波包對指紋圖像進行初濾波；在設計方向濾波器時，對濾波器的旋轉引入了方?圓變換的方法，進而減少了計算的復雜度，同時避免引入誤差。
  11. By changing the multiple time - varying fading factors of the strong tracking filter, mstkf switches between kalman filtering and strong tracking filtering

    通過直接改變強跟蹤濾波器的多重時變漸消因子， mstkf在卡爾曼濾波和強跟蹤濾波兩種工作狀態之間切換。
  12. Analyze, design and simulate the digital down - convert frequency. first, the analogue if signal is converted to digital if signal in one a / d convertor which used passband sampling theory. the digital if signal is then passed to a pair of digital mixers operating in phase quadrature for mixing the if signal to baseband signal

    首先利用帶通采樣定理對中頻模擬信號進行a / d變換后將其混頻到基帶，然後用平方根升餘弦滾降濾波器同時完成低通濾波和匹配濾波雙重作用，以提高解調器的效率。
  13. Furthermore, it is easy to use different control strategy in the digital inverter, so different pwm control can be used, in order to optimize the design of output filter and improve the output performance

    同時，在數字變換器平臺上可以方便地實現各種控制策略，達到進一步優化輸出濾波器參數、提高輸出電能質量、提高變速恆頻電源整體效率等目的。
  14. In the image quantization and enhancement section, the non - linear gray mapping based on histogram specification and the enhancement digital filter in spatial domain is applied to the result digital subtraction images

    對于獲得的數字剪影結果圖象採用了規定化直方圖的非線性灰度變換演算法，同時對于結果圖象的增強設計了空域數字濾波器。
  15. Afterwards, in order to decrease the contradiction between the more complex and mass remote sensing image data and relatively slow speed of information extraction, an improved sfim image fusion method is proposed. this modified algorithm is on the base of sfim fusion technique, combines ihs method and sfim method and then replaces the former mean filter by an adaptive weighted mean filter. compared with the results of several common fusion techniques through a set of simulation tests between multispectral images and panchromatic images, it is proved that the new method can get an excellent result for the aim of improving spatial resolution while preserving the spectral information of multispectral images

    論文的主要工作和成果包括：在像素層，論文研究了多傳感器數據融合理論及遙感圖像預處理的過程和步驟，歸納了多源遙感圖像像素層融合的常用演算法，並針對目前遙感數據呈海量化、復雜化這一發展趨勢同遙感信息提取的能力和效率滯后這一矛盾，在sfim演算法的基礎上，將ihs變換與sfim相結合，將原演算法中的均值濾波器改進為自適應加權均值濾波器，提出了一種改進的sfim演算法，通過對一組多光譜圖像和全色圖像的雙傳感器融合模擬對比試驗，證明了該演算法在保持原多光譜圖像光譜信息的同時，能夠有效提高融合圖像的空間分辨能力。
  16. 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。
  17. Through theoretic reckoning and simulating analyzing, several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure

    通過理論計算和模擬分析，比較了並聯型apf的幾種控制策略的優點和缺點，從中選擇瞬時無功理論控制策略i _ p - i _ q計算方式為指令電流產生的演算法，並在此基礎上增加了抑制系統諧振和平衡直流側電容電壓的控制；比較了並聯型apf主電路的兩種常見形式，從中選擇了三相電壓型變流器的主電路形式；算出適合該apf的直流側電容和出線電感的參數；設計出能有效消除apf產生的高次諧波的高通濾波器。
  18. At the present, kalman wave filter, the time - variant wave filter and the first - order wave filter are familiar

    目前，比較常見的海浪濾波器有： kalman濾波器、時變濾波器、一階濾波器等。
  19. Compared with kalman filtering, the unknown definite disturbance with finite energy instead of white noise drives the state - space system in h filtering. compared with the time - variant filter and the first - order filter, h filter has preferable robustness

    與kalman濾波相比， h _濾波採用未知的具有有限能量的確定性干擾代替白噪聲驅動狀態空間系統；與時變濾波器和一階濾波器相比， h _濾波器具有較強的魯棒性。
  20. Fast segmentation of video objects based on change detection and spatial - temporal filters

    基於變化檢測與時空濾波器的視頻對象分割方法
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