波前匹配 的英文怎麼說

中文拼音 [bōqiánpīpèi]
波前匹配 英文
wave-front matching
  • 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...
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 匹 : Ⅰ動詞（比得上; 相當; 相配） be equal to; be a match for Ⅱ形容詞（單獨） lone Ⅲ量詞1. （用於馬、騾等） 2. （用於整卷的綢或布）
  • 配 : Ⅰ動詞1 （兩性結合） join in marriage 2 （使動物交配） mate （animals） 3 （按適當的標準或比例加以...
  • 匹配 : 1. [書面語] （婚姻配合） mate; marry 2. [電學] matching
  1. In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )

    主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。
  2. 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濾波（常被稱為particlefilter ）的地形匹配演算法（ pftan ） ，有效地克服了利用sitan時由於地形隨機線性化帶來的誤差，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。
  3. The principle, theory, realizing methods for holographic lithography as well as the pattern transfer mechanism among the traditional photomask - hologram mask - resist have been deeply investigated. an experimental system with total inner reflection wavefront conjugation holographic lithography using right angle prism and refractive index matching liquid is designed and built, and the experimental research is carried out

    對全息光刻的原理、理論、實現方法及傳統光掩模?全息掩模?抗蝕劑圖形傳遞機理進行了深入的研究，設計和建立了採用直角棱鏡和折射率匹配液的全內反射波前共軛全息光刻實驗系統，進行了實驗研究。
  4. The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it, and the method of small group intervals, small offset, much more channels, short array length, high - frequency receivers are applied during the link of data acquisition, and that the techniques of the refraction static correction, the noise suppressing, the high - resolution velocity analysis, the wavelet length compression, the wavelet zero - phase, and the prestack migration should be applied emphasizedly during the link of data processing and interpretation

    研究表明，對于城市活斷層的抗干擾高解析度淺層地震勘探，在數據採集環節應採用具有線性或非線性變頻掃描功能的可控震源和與其相匹配的地震儀器，以及小道間距、小偏移距、多接收道、短排列和高頻檢波器接收的工作方法；在數據處理與解釋環節，要重視折射靜校正技術、噪聲壓制技術、高精度速度分析技術、子波壓縮技術、子波零相位化技術和疊前偏移技術等的應用。
  5. The commonly used method at present is to adopt the repeated stack interval of the data from the two sources to calculate the matching operator and then to perform the matched filtering

    目前運用較廣泛的方法是，利用2種震源資料的重復疊加段求取匹配運算元，然後進行匹配濾波，但該方法要求重復疊加段有可靠的波組特徵和較高的信噪比。
  6. The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other

    當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時，剪切層對其有選擇放大作用，形成渦環結構，剪切流動中渦環與碰撞壁撞擊，在碰撞區域產生壓力擾動波並向上游反射，在上游剪切層分離處誘發新的擾動的產生，當新擾動與原擾動匹配時，射流上游就被不斷地受到周期性激勵，腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。
  7. A triple - layer radar absorbing coatings composed of dielectric and magnetic materials were prepared according to resistance matching principal, which is then further coated with an infrared and visible light camouflage coatings

    摘要依據阻抗匹配原理制備了一種3層雷達吸波塗層，並在吸波塗層表面噴塗一定厚度的可見光、紅外偽裝塗料，比較了噴塗偽裝塗料前後塗層吸波性能的變化。
  8. Then the exisiting algorithms on iris location are studied and the disadvantages are pointed. a new approach based on edge detection, mathematic morphology and probability statistic is put forward. after studing the means of daugman ’ s encode of iris texture and w. w. boles ’ extraction the unique features by the zero - crossings of the wavelet transform, we adopted wavelet multi - resolution analysis that extract the feature

    在研究和分析了前人的虹膜定位演算法以及daugman對虹膜紋理的編碼方法、 w . w . boles的小波過零點分析提取虹膜特徵識別演算法的基礎上，研究了基於邊緣檢測和數學形態學以及概率統計等理論的一種新的虹膜定位方法;研究了虹膜圖像的歸一化和圖像增強;研究了基於db4小波的多分辯率分析的虹膜特徵提取演算法;研究了相關系數匹配識別。
  9. Such method divides the whole image into a series of image layers including different signal characteristics, such as low - freq & edge layer and texture layer. for the first, we adopt wavelet image algorithm ; for the latter, matching pursuit based on redundant dictionary is utilized

    它將圖像劃分為一組包含不同信號特徵的圖像層，如低頻邊緣層和紋理層等等，對於前者可以選擇採用小波零樹編碼方案，而對後者則採用基於冗餘字典的匹配分解演算法。
  10. Because the synthetic seismic record and the seismic record data got in the surface are not well matching caused by the dispersion of seismic wave, frequent correction between them must be done before use. under control of well logging data, there are two important methods to get wave impedance from seismic data inversion : wave impedance inversion method based on convolution model and wave impedance inversion method based on wave equation. using seismic data attributes can predict the information of logs

    測井資料和地震資料是地震勘探中兩種最重要的資料，由於地震波的頻散，使合成地震記錄與地面地震記錄不能完全匹配，因此使用之前必須對二者進行頻率校正地震資料在測井資料約束下可以進行反演，以求取地下波阻抗，主要有兩種方法：基於褶積模型的波阻抗反演方法和基於波動方程的波阻抗反演方法可以用多屬性變換由地震資料預測測井信息。
  11. This dissertation analyses the back ground clutter ’ s characteristic of sar and the serious influence to sar target detection and classification. based on analyzing jamming methods in existence such as noise jamming and cheat jamming, and the anti - jamming ability of high - resolution sar, the author puts forward a new matching jamming which is time, frequency and dopple fields multidimensional - matching - overcast similar clutter ’ s jamming

    本文通過對sar背景雜波的特性分析和背景雜波對sar目標檢測和識別的影響，結合目前傳統干擾體制的不足，以及sar自身強抗干擾的能力，研究了一種對sar的時域、頻域和多普勒域多維匹配覆蓋的類雜波干擾新方法。
  12. Three different methods were proposed based on a k - vertex disjoint graph technique which was applied to the reassembly of image fragments : similar coefficient matching ( scm ), volatility gradient matching ( vgm ) and prediction pixel matching ( ppm ), to evaluate the candidate weights between any fragments

    針對目前最優重組演算法中的關鍵技術- -鄰近權重選派技術，提出三種計算方法：相似系數匹配（ scm ） 、波動梯度匹配（ vgm ）和預測像素匹配（ ppm ） 。
  13. This method requires assured composite wave characteristics and high s / n ratio of the repeated stack interval

    為此，提出了一種疊前多點綜合串聯匹配濾波處理技術。
  14. Moreover, the scheme of mmw optically controlled phased array radar is presented also. at last, the matching - circuit and apd receiver circuit are designed. the curves of the system are shown respectively

    此外，本文還對l波段光傳輸鏈路實驗系統的性能進行改進，設計了前端匹配電路和apd接收電路，並給出相關電路的實驗結果和測試曲線。
  15. Comparing with technology of matching filter, joint transform correlator has many merits. it can identify the targets very quickly and accurately. so this technology should have extensive application prospect in target tracing

    聯合變換相關識別技術，相對于匹配濾波技術有很多優點，而且，對目標的識別迅速準確，可以做到實時識別，這一技術在目標跟蹤領域應該有很大的應用前景。
  16. Two - resonator method is using to build the draft of international measurement standard of rs for high tc superconductive thin films, in which the rs value of the hts films can be determined by unloaded q ’ s measured from two resonators by using simple formulas

    目前，國際上用雙諧振器法建立高溫超導薄膜微波表面電阻rs國際測試標準草案。此法是基於模式匹配方法，通過嚴格的推理得到簡單的方程，從諧振器的諧振頻率和固有品質因數可以求出超導薄膜的rs 。
  17. According to the statistic characteristics of ir background clutters, a system based on improved spatial matched filter ( smf ) is presented in this article

    本文在總結前人研究成果的基礎上，針對復雜背景紅外圖像的統計特性，提出了一種基於組合式空間匹配濾波器的運動小目標檢測方法。
  18. Based on the outcomes developed, this paper mainly studies the methods for ir small target detection in high clutter backgrounds. there are four chapters in this paper

    本文在總結前人研究成果的基礎上，針對復雜背景紅外圖像的統計特性，提出了一種基於空間匹配濾波的小目標檢測方法。
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