雜波特性 的英文怎麼說

中文拼音 [zábōtèxìng]
雜波特性 英文
noise characteristic
  • 雜 : Ⅰ形容詞（多種多樣的; 混雜的） miscellaneous; varied; sundry; mixed Ⅱ動詞（混合在一起; 攙雜） mix; blend; mingle
  • 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...
  • 特 : Ⅰ形容詞（特殊; 超出一般） particular; special; exceptional; unusual Ⅱ副詞1 （特別） especially; v...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 特性 : characteristic（s）; character; performance; features; properties; behaviour; response; character...
  1. For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field

    因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。
  2. Second, this paper analyzes the time - frequency distribution of the clutter from airborne pulse doppler radar ( pdr ). the side - lobe clutter, which is the main factor to influence the pdr, is analyzed and calculated. based on the simulation of typical geometry of the land, we analyze and discuss the side - lobe clutter and concluded that the dft of can be considered as the phase of the coho

    並且根據各種典型地貌的近似模擬，從統計特性上和頻率域上對脈沖多卜勒雷達的旁瓣雜波進行了分析討淪，還得出脈沖多卜勒雷達的dft可以近似地看作相參積累，並在程序的編制中利用了這一個結論。
  3. Porter revealed the true complexity of cell structure.

    波特如實地揭示了細胞結構的復雜性。
  4. Based on my working experience in beijing trs information technology limited and the particularities and complexity of e - government requirement and purchasing process are studied by using modern marketing theories and methods systematically in the beginning. and the actual status and characteristic of the e - government software market in china was analyzed scientifically through comparing approach of products competing dominance and market share, increscent sales ratio. then competition status of trs e - government system was evaluated by porter five forces model and a conclusion is that trs lacks of competitions power

    本文結合筆者的實際工作，根據政府部門對電子政務軟體產品技術和服務要求的特殊性和其采購過程的復雜性，系統運用了現代市場營銷理論的基本原理和方法，首先分析了電子政務軟體市場發展狀況和特點，運用產品競爭優勢比較、市場佔有率和銷售增長率比較等方法，根據波特競爭力模型對trs電子政務系統的行業市場競爭情況進行了評價，得出了trs電子政務系統市場競爭力不足的基本結論。
  5. So, basing on the chaotic theory we look sea clutter as a chaotic system, reconstruct the phase - space of sea clutter to forecast and eliminate the sea clutter

    由於神經網路可對任意非線性函數進行模擬的特性，用海雜波模型數據對神經網路進行訓練，重建海雜波的狀態預測方程。
  6. Super - resolution spatial spectrum estimation is applied in this dissertation to realize bearing resolution by utilizing the different bearings between targets and first - order sea echoes. the simulation of radar echoes in one resolution cell is presented based on the theoretically analyzing hf sea clutter sea clutter reflection characteristic and sea echo spectrum stretching mechanics

    本文從分析高頻海雜波反射特性以及平臺運動引起海浪展寬機理入手，建立便於理論研究的一階展寬的海雜波和二階海雜波模型;在分辨單元上對雷達回波信號進行了模擬。
  7. Comparing with the basic financial instruments, the derivative financial instruments have the peculiarities as followed ( l ) the derivative financial instruments are depended on the basic financial instruments ; ( 2 ) the value of the derivative financial instruments showes an obvious fluctuation ; ( 3 ) the business of the derivative financial instruments attributes go credit business, which has leverage ; ( 4 ) using the derivative financial instruments can elude the risks in a certain extent ; ( 5 ) the derivative financial instruments have very supernal risks ; ( 6 ) the conformation of the derivative financial instruments is very complex, which is difficult to understand to common investors ; ( 7 ) the business of the derivative financial instruments showes dummy ; ( 8 ) the business of the derivative financial instruments showes uncertainty

    與基本金融工具相比，衍生金融工具的特點主要表現在： （ 1 ）衍生金融工具依存於基本金融工具； （ 2 ）衍生金融工具的價值具有明顯的波動性； （ 3 ）衍生金融工具的交易屬于信用交易，具有杠桿作用； （ 4 ）利用衍生金融工具可以在一定程度上規避風險； （ 5 ）衍生金融工具具有極高的風險性； （ 6 ）衍生金融工具的構造靈活復雜，難以為一般投資者理解； （ 7 ）衍生金融工具具有虛擬性； （ 8 ）衍生金融工具交易具有不確定性。
  8. Because of its complexity, no analytic solution can be got. to better understand the propagation characteristics of the waveguide, it is necessary that analytic solution should be got for simpler structure. based on the background, in this paper, we discuss the propagation characteristic of ray in the planar symmetric metal - clad uniaxial waveguide ( the waveguide layer is uniaxial crystal

    但是以前人們只局限於對非對稱金屬波導（即在各向異性介質波導層一面上鍍有金屬膜）的討論，由於其復雜性，他們沒有給出解析解，為了能更好的解析討論其傳輸特性，需要討論較簡單的波導結構。
  9. Three dimensional interaction flowfield over high - speed spinning projectile with lateral jets is numerically simulated in this dissertation firstly. complicated shocks wave patterns is analyzed. several factors concerned such as high - speed spinning, attack angle, base bleed and so on, are studied

    本文首次完成了高速旋轉彈丸側噴三維干擾湍流流場的數值模擬，分析了彈丸側噴流場復雜的波系結構，研究了高速旋轉、攻角、底噴等因素對彈丸側噴流場的影響規律，深入分析了旋轉側噴彈丸的空氣動力學特性。
  10. The experiment show that cr : sbn crystal has super characteristic of four - wave mixing to produce the phase - conjugate wave. we study the dependence of the phase - conjugate reflectivity of 1000ppm cr : sbn crystal on the parameters of incidence light such as light intensity ratio and the angle of incidence

    研究了摻雜量為500ppm的cr ： sbn晶體的四波混頻相位共軛特性，發現該晶體的四波混頻特性不如摻雜量為1000ppm的cr ： sbn晶體。
  11. And the characteristics of the ground clutter change as well as time change

    此外，飛機運動時，雜波背景的特性會隨時間變化。
  12. The characteristics of the ground clutter are analyzed and presented. the development and the theories of clutter suppression of airborne radar are desicribed systematically

    首先分析總結了地物雜波頻譜的組成特性，系統地闡述了機載雷達雜波抑制的基本理論及其發展動態。
  13. The relationship between the incident angle and the self - pumped phase - conjugate ( sppc ) reflectivity in cu : knsbn is studied

    從實驗上觀察了不同摻雜量的cr ： sbn晶體的四波混頻相位共軛特性。
  14. The fewer spatial degrees - of - freedom ( dof ) are always hoped. with the progress in stap being made continually, people find stap can be used in many other radars besides airborne early warning surveillance radars if only the clutter is space - time - coupling

    隨著空時二維處理研究的深入，人們發現它不僅可以應用於機載預警雷達，只要雜波存在空時耦合的特性，空時二維處理都可以發揮作用。
  15. The aim of the task is to detect moving target in the varied clutter environment, which contains the following contents : ( 1 ) radar theories relational to the task, including clutter character, their magnitude and spectral distributions. in this part, moving target detection method is introduced, several methods on clutter suppression is presented

    本課題的主要目的是進行雜波環境下的動目標檢測，由以下部分組成： （ 1 ）與本課題相關的雷達理論知識，包括雜波特性，它們的幅度分佈和頻譜分佈、處理方法，動目標檢測的原理以及雜波抑制的常用方法。
  16. Some properties of clutters and some methods of clutter rejection including ground and moving clutter rejection are discussed at first. in this thesis, the emphasis is put on the moving clutter rejection, which adopts the means of adaptive moving target indication ( amt1 )

    首先簡述了雷達雜波特性，討論了幾種對固定雜波和運動雜波的抑制方法，重點討論了利用自適應對消技術實現對運動雜波的抑制方法。
  17. At last, this paper analyzed the influence of the inversive receiver to the chracteristic of the clutter and the ratio of signal power and the noise power, discussed the effective detection of target signal in correlated clutter, and then put forward a new method naming multi - periods shift accumulation for detecting moving target when not knowing the exact movement parameter

    最後，本文分析了倒置接收對目標回波信噪比及雜波特性的影響，討論了在相關雜波區對回波信號有效檢測的方法。針對如何在彈目相對運動參數未知的條件下對高速運動目標進行積累檢測這一問題，提出了一種多周期移位積累的新方法。
  18. To detect target signal with strong sea clutter, to increase the clutter visibility of sea radar and enable higher resolution and reliable monitoring performance of sea radar, three kinds of key clutter modeling technology for sea radar are studied in detail, which are clutter scattering mechanism modeling, clutter statistics modeling and clutter nonlinear modeling on basis of elaborating sea clutter characteristics

    摘要為了能在強烈的海雜波背景下檢測到目標信號，從而提高海面雷達的雜波可見度，使海面雷達具有更高的解析度和可靠的監測性能，在精確的描述海雜波特性的基礎上，詳細研究了雜波散射機理建模、雜波統計建模和雜波非線性建模3種海面雷達雜波建模關鍵技術。
  19. This paper introduces principle of fractal and the mandelbrot fractal theory. it analyze the fractal character and study the mltifractal for the clutter tracking. in according to the rage which follow the q on point fractal dimension and region fractal exponent. we confirm the prepreerence multifractal high moment, combining the clutter feature of pd radar and novel multifractal approach, the mainlobe clutter tracking come true

    以單點分形維數和區域分形指數隨q值的變化程度為標準，確定了多重分形最優高階矩數，結合pd雷達的雜波特性和多重分形演算法，實現了主瓣雜波跟蹤;研究了貪婪snake方法在雜波跟蹤中的應用，介紹了snake基本模型的能量函數，並分析幾種常用的snake模型的離散能量函數。
  20. Sigma delta modulation frequency synthesis is an advanced technology that applies in pll ( phase - locked loop ) frequency synthesizer, which could transform the spurs created by fractional - n synthesizers into phase noise that could be filtered by inherent low - pass identity in pll

    此技術應用-調制將鎖相環頻率合成器中分數分頻器產生的相位雜散轉化為相位噪聲，通過鎖相環本身低通濾波特性濾除，從而使用單環即可獲得很高頻率解析度和極低的相位雜散。
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