有效相位差 的英文怎麼說

中文拼音 [yǒuxiàoxiāngwèichā]
有效相位差 英文
effective phase difference
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 有效 : effective; valid; efficacious
  • 相位 : phase position; phase
  1. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    通過對差頻信號進行的分析，得出了差頻相位的具體表達式，表現出了要檢測的各量的物理意義，對檢測的方法提供了理論依據。利用二維fft方法，可以有效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題，採取時間波門的處理方法。
  2. At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel

    首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。
  3. The results show that the genetic diversity of filial generations is higher than self - bred progeny ’ s ， the hybrid vigor has manifested at metabolization level 。 the proportion of polymorphic loci ( p. 99 ) in f1 generations was 30. 77 - 36. 36 % ， the mean observed heterozygosity ( ho ) of jmcf （ japanese male chinese female ） was the highest with 0. 1727, the rest populations were ： jfcm （ japanese female chinese male ） 0. 1536 、 cp 0. 1273 and jp 0. 1055 ， the mean effective number of allels per locus in f1 generations ： cp ’ s was the highest with 1. 7318 ， jp ’ s was the lowest with 1. 6718 ， the filial generations ’ values were in the midle of the cp ’ s and jp ’ s and between them there was no brightly difference, with 1. 6955 ( jfp ) and 1. 6927 ( jmp )

    各組的平均雜合度預期值也表現出該趨勢，即：日自交組最低，為0 . 1786 ，日雄中雌雜交組的平均雜合度最高，為0 . 1964 ，日雌中雄雜交組和中自交組分別是0 . 1891和0 . 1865 。 hardy - weinberg平衡下遺傳偏離指數也是雜交組的小於自交組的，平均每個位點的等位基因有效數目中自交組最高為1 . 7318 ，日自交組最低為1 . 6718 ，兩雜交組群體的這一指數相差不多，分別是1 . 6955和1 . 6927 ，位於兩親本的中間水平。
  4. In this system, the movement of the step - electromotor is controlled by computer, and then the dial pointer is drove by the step - electromotor. at the same time, these images of the analog instrument are took by high precision ccd video, and then these images will be processed by the computer, using some image - processing algorithms such as image segmentations, threshold identification, image binarization, areas labeling, dial center - point identification, useful areas identification & abstracting, and areas thinning, etc. followed this, the dial pointer of the “ circle ” is able to be located. at last, the dial pointer position will be recognized by the computer

    本系統由計算機控制步進電動機的運動，進而驅動指針式儀表表針的運動，並且通過高精度ccd攝像機實時獲取表盤圖像數據，同時進行表盤圖像的相關處理，包括圖像分割，閾值確定，圖像二值化，區域標記演算法，圓心擬合，有效區域識別提取，區域細化等，最終快速識別出表盤指針所處位置;最後，根據國家指針式儀表類檢定規程所制定的演算法計算出該儀表的相關誤差，檢定指針式儀表的各種精度，通過這些數據判斷該儀表是否合格，列印該儀表的檢定結果報表。
  5. Therefore, the three fundamentals required to obtain high precise measurements are : 1 ) frequency stability and frequency difference stability of the double - frequency laser source as well as the stable equivalent length of bore ; 2 ) the measuring beam and the reference beam are placed very co - axially ; 3 ) capability of recording the sub - division of the period of phase change and a reversible counter system

    因而干涉儀系統達到高精度的基礎是：頻率及頻差穩定的雙頻激光源、穩定的等效腔長；測量光與參考光合光後有很高同軸度的光路結構；能可靠記錄相位差變化周期數的細分及可逆計數系統三部分。
  6. The results obtained from the simulation example suggest a good effect and significance of using gps simulation data for demonstrating the feasibility and validity of an od design or an algorithm of certain problem. 4 the ill - conditioned problem existing in relative kinematic od using gps carrier - phase data is discussed and then some preliminary efficient approaches for solving this problem are given out there are several reasons that cause the ill - condition pro

    （四）探討了星載gps相位相對定軌中的病態性問題，並嘗試給出了較有效的解決方案地面基準站、低軌衛星和gps衛星之間的幾何形狀分佈不佳，差分技術的應用使得模糊度之間及模糊度和三維坐標向量改正之間產生較強的相關性，往往都會導致星載gps定軌中的法矩陣的病態性。
  7. The main body, which includes 5 parts : in the conception section, first, it reknew the conception of both culture tourism and marketing position, in order to clear the concept and made it a guide of the whole article ; in the marketing section, next, it has studied on the world tourism market for its developing tendency and distinctive feature. it analyzed the present conditions of chongqing cultural market and also made prediction about it ; third, in the resources section, in the light of diversity, this part made a clear classification on chongqing cultural resources according to their characteristics ; the fourth part, in the product section, it give a position analysis about two things : the overall image, and the products of chongqing cultural tourism, and also made correlative strategies of them ; in the communicating section, fmally, it is mainly about how to communicate with tourism consumers, how to build up a good image of cq cultural tourism in their minds, and let them have a good understanding

    正文部分分為五個問題進行論述：首先對文化旅遊與市場定位的定義進行了重新認識，以求清晰概念，指導研究；第二，對世界旅遊市場發展的趨勢、特點和重慶地區文化旅遊市場發育現狀及開發前景進行分析和預測；第三，以差異化為劃分依據，對重慶地區的人文旅遊資源按其資源特色進行歸類簡括梳理：第四，對重慶文化旅遊的總體形象與重慶文化旅遊產品進行定位分析，提出了形象概念和產品定位的相關策略；最後，對如何利用有效溝通手段，在旅遊消費者心目中建立對重慶文化旅遊形象與重慶文化旅遊產品的良好認知，進行具體分析。
  8. This dissertation focuses on the application of data fusion in two - phase flow regime identification. following is the main contribution of the dissertation. 1 ) based on quartile and first order differential, a new outlier detection algorithm is presented, experiments show that the method combining with low pass filter can remove gross error and unwanted frequency components

    本文的主要工作與創新點在於： 1 ）將分位數方法與一階差分法相結合，提出了一種基於一階差分的粗差剔除方法，該方法與低通濾波器的結合可以有效去除兩相流壓力波動信號中的粗大誤差以及信號頻帶以外的頻率成分。
  9. The algorithm, basing on convolution filtering technique and the fringes " gray values max - min distribution, can automatically and accurately carry out space frequency spectra shifting without spectra analysis and spectrogram in the technique of phase method of projected grating for 3 - d object shapes measurement. the new algorithm makes image processing much caster and the technique of object shapes measurement more automated. the phase error caused by filtering and the crossed - optical - axes geometry setup is also discussed

    本文採用投影光棚相位法和數字卷積濾波技術：根據柵線的條紋灰度值分佈具有極大極小分佈的特性，提出卷積濾波形貌光學自動檢測的圖像處理方法，有效地實現了頻譜自動移位，從而進一步提高了圖像處理的速度和形貌測量技術的自動化程度；同時對採用兩光學主軸相交，且非遠心投影系統所產生的誤差進行了分析，並提出了修正方法。
  10. Through the research of the tension in vivo, the immediate retraction rate and histology examination about the different ways and different maintaining, we get : the increase area of the rapid and conventional expansion has little difference with the expanded time ; however it has significant difference with the maintaining time. it shows that shortening the expanded time is feasible in clinic, but shortening the maintaining time is out of the question ; after the capsule is removed, immediate retraction rate of the expanded skin notably decreased, significantly different from those with intact capsule ; the collagen content of the rapid expansion is just the same as the conventional expansion, but the changes of the histology dependences on the maintaining time. comparison with conventional expansion, rapid expansion has no significant drawback ; maintaining a period after expansion can greatly increase the area of expanded skin and reduce immediate retraction

    通過對不同擴張期、不同方式和不同維持期對擴張皮膚的在體張力、即時回縮和皮膚組織學的研究，得到：快速擴張和常規擴張最後獲取的皮瓣，面北京工業大學工學博士學位論文一積增加差別不大；擴張皮膚的面積增加和張力下降與維持期的長短有關；而與擴張期的長短關系不大，說明在皮膚擴張術中可以縮短注水時間，但是維持時間不能縮短；擴張皮膚去除包膜后的即時回縮率下降，與未去除包膜的相比較有明顯差異；快速擴張皮膚的膠原含量變化與常規擴張的基本一致，擴張皮膚的組織學變化與維持期的關系較為密切，與擴張方式關系不大；快速擴張和常規擴張相比，快速擴張沒有明顯的破壞作用；擴張結束后，維持一段時間，能有效的提高擴張面積且能有效地減少回縮。
  11. An algorithm for detecting moving ir point target in complex background is proposed, which is based on the reverse phase feature of neighborhood ( rpfn ) of target in difference between neighbor frame images that two positions of the target in the difference image are near and the gray values of them are close to in absolute value but with inverse sign. firstly, pairs of points with rpfn are detected in the difference image between neighbor frame images, with which a virtual vector graph is made, and then the moving point target can be detected by the vectors ' sequence cumulated in vector graphs. in addition, a theorem for the convergence of detection of target contrail by this algorithm is given and proved so as to afford a solid guarantee for practical applications of the algorithm proposed in this paper. finally, some simulation results with 1000 frames from 10 typical images in complex background show that moving point targets with snr not lower than 1. 5 can be detected effectively

    基於運動點目標在鄰幀差分圖像中所具有的近鄰反相特徵，即運動點目標的兩個位置相鄰近、灰度值一正一負，提出一種在復雜背景下，基於紅外序列圖像的運動點目標檢測演算法.本演算法利用該特徵在鄰幀差分圖像中檢測反相點對，進而構造反相點對矢量圖，最後依據累積反相點對矢量圖中多矢量首位相接的連續性檢測出運動的點目標.文中給出並證明應用本演算法能以概率1檢測到運動點目標的收斂性定理.對典型復雜背景下10幅1000幀圖像的模擬結果表明，當信噪比大於或等於1 . 5時，可以有效檢測出運動點目標
  12. Experimental results show it can find the rough toa range in order to lessen the computation burden, while getting rid of glints and disturbing components attached to the phase difference signals, the paper suggests a data compression procedure combined with dynamic smoothing

    為了減小擬合計算量並盡量濾除疊加在相位差序列上的干擾起伏，採用了數據壓縮結合滑動平均的預處理方法，並對該方法的正確性和有效性進行了方差分析驗證。
  13. At the same time, the method of disposal phase shift of ct by compensation is introduced. then the analysis and statistic of electrical power quality, the control scheme and compensating amount of capacitor for reactive power compensation are analyzed respectively. and in the paper, the control with a / y and the switch with ac contactor and solid state switch is valid measure not only for improving operate level economically and amending electrical power quality but also for avoiding of replacing switch frequently and decrease economic loss

    然後對現有的演算法進行了詳細的分析、比較，篩選出既能滿足硬體要求又可降低投資、保證精度、簡化軟體的方案，確定了準同步采樣的方案，並通過對準同步采樣誤差的分析，提出了一種從45開始采樣，從而提高精度的采樣數據處理辦法，同時，對于電流互感器相位漂移提出了一種補償辦法，接著對裝置中電能質量分析與統計以及無功補償中電容器的補償量、投切原則也作了相應分析，其中對于無功補償採用y混合接線，並利用交流接觸器和固態開關共同投切電容，不但提高了經濟運行水平、改善了電能質量，而且有效的避免了頻繁更換開關，減少了經濟損失；最後，設計了裝置的硬體電路並繪制了相應的軟體流程圖。
  14. We encoded and optimized the filter to design the algorithm for filter. computer simulation of complete simulation has demonstrated that the new filtering technique can significantly not only reduce the width relative deviation and the area relative deviation of the image, but also improve the resolution and the focal depth. it provides directive basis for the development of the experiment and the practicability of the technology

    計算機模擬結果表明，通過在非瞳孔面的適當分數傅立葉變換面上加入優化設計的位相型濾波器，可有效減小光刻圖形的線寬偏差和面積偏差，提高成像系統的解析度和焦深，為分數域濾波改善光刻圖形質量實驗的開展和這一解析度增強技術走向實用化提供了指導依據。
  15. By improving the method of sampling of taking the sample cubes in the vertical section instead of from both end and middle of the alloy ingot, the analytical results obtained were in consistency, and the deviations found were quite small values and reasonable

    通過改進取樣方法，即將原來從鋁合金錠的中間及兩端截取塊樣，改為在鋁錠的任意位置縱斷面切塊取樣，有效地克服了不同激發點所得結果存在明顯偏差的問題，使所得分析結果相互之間的偏差值很小而合理。
  16. Thirdly, a modified extended chirp scaling ( ecs ) algorithm is presented, which solves the problem of producding fine focused images in the class of chirp scaling ( cs ) algorithm. lt can be used for uwb - sar imaging effectively. the phas e error produced by cs operation are analyzed. a windowed process in two dimension frequency domain before cs operation are proposed. it can improve the quality of image and widen the effectively swath and increase the peak to sidelobe ratio ( pslr )

    然後針對chirpscaling （ cs ）類演算法不能對參考點精確聚焦的問題，提出了一種改進的擴展cs （ ecs ）演算法，實現了對uwb - sar的高效成像；分析了cs操作產生的相位誤差，提出在cs操作之前在二維頻率域對信號加窗，除有效提高信號的峰值旁瓣比（ pslr ）外，還可以提高圖像質量，增加有效測繪帶寬度。
  17. The reason that the noise is lower with inclining tongue is : 1 ) both the radius of the tongue and the gap between the tongue and the blade are changed across the wideth ; 2 ) the phase angle between blade and the tongue is changed across the wideth, therefore the peak value of the noise do not appear at the same time, so the peak value of the noise with inclining tongue is much lower than the straight one. the influence of the expanded angle of the shell of the fan on the noise was invested experimentally, and the optimal angle was got

    傾斜蝸舌降噪的主要原因是：一是改變了從氣流入口側到風機輪盤的蝸舌間隙和蝸舌半徑；二是改變了葉輪與蝸舌非定常相互作用的相位差，使其產生噪聲也有相位差，迭加的結果進一步降低了噪聲。另外，試驗研究了不同蝸殼擴張角對風機噪聲及效率的影響規律，蝸殼擴張角選擇當否，對效率和噪聲影響較大。
  18. In allusion to the two - way traffic artery, the dynamic optimization model which adopt cycle length, split and offsets as the decision variables is established, and the simulation is conducted in a dynamic traffic demand mode

    針對一種雙向交通的飽和交通干線系統，建立了以信號周期、綠信比和相位差為優化控制變量的交通流動態優化控制模型。並在一種動態的交通需求模式下進行了模擬研究，結果表明所提方法的有效性。
  19. In this article, a new unwrapping method is presented, which can get the real phase of the image and overcome the influence of the noises. 4. after the measurement system solves the difference of phase through ftp and makes the data multiply with the calibration matrix, the real height of the object surface can be got

    因此本文對ftp法的解相問題做了改進，提出了一種逐點增長解相方法，可以快速得到變形光柵相對參考光柵的實際相位差，有效地消除相位圖象中噪聲的影響，並用實驗對所提出的解相方法進行了驗證。
  20. This paper presents a solution for phase measurement using numeric zero - crossing and tms320lf2407 16 - bit fixed - point digital signal processor

    相位計採用數字信號處理技術，可以有效地實現相位差的高精度測量。
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