波譜特性 的英文怎麼說

中文拼音 [bōpǔtèxìng]
波譜特性 英文
spectral characteristic
  • 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...
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 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. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. Conclusion this result shows that that the pinna and concha have almost no effect no sound localization in horizontal plane, which means spectral characteristic does not possihly dominate in horizorntal plane

    結論實驗表明耳廓和外耳道對水平方向的聲音定位幾乎無影響，也就是說在水平方向上的聲音定位，耳廓和外耳道的濾波、共振等改變聲波頻譜特性作用可能不明顯。
  3. Rhodopsin is similar in both structure and absorption characteristics to the cone pigments most sensitive to wavelengths in the middle of the visual spectrum, and it evolved from those pigments hundreds of millions of years ago

    就構造與吸收光譜特性而言，視紫質與中波長錐色素最為相似；幾億年前，視紫質從這些中波長錐色素演化了出來。
  4. Sol - gel method was used for preparing the nano - tio2 photocatalytic film on general glas slid and ito conductive glass. the spectrum property, surface image, crystlal type, particle size, thickness and other properties of this film were measured by uv - vis, afm, xrd and other apparatus

    採用溶膠-凝膠法在普通玻璃載波片和ito導電玻璃上制備出負載型納米tio _ 2薄膜，並用uv - vis ， afm ， xrd等對納米tio _ 2薄膜的光譜特性、表面形貌、晶型及粒子大小、薄膜厚度等進行了表徵。
  5. The main work in this dissertation can be summarized as follows : 1. we analyzed the the distribution characteristics of ground clutter returns in airborne phased - array radar, and constructed the airborne phased - array radar main - lobe returns model

    本論文的主要工作如下: 1 .對機載相控陣雷達回波譜特性進行了深入的分析，建立了比較逼真的且通用性較好的機載相控陣雷達回波的數學模型。
  6. The influences of optical feedback and external cavity length on the laser output are studied, and the relation between fluctuations of speckle signal and the transverse velocity of rough surface is discussed

    分析了隨機變化的反饋強度與外腔長度對激光光譜特性的影響。模擬了散斑干涉信號的波動與粗糙表面橫向移動速度的關系。
  7. The character of fiber laser spectrum is measured by optical spectrum analyzer. the experiment approves the relationship of loss, threshold and lasing wavelength, which is that the higher loss, the higher threshold, and the shorter lasing wavelength

    我們用光譜儀測量了激光光譜特性，實驗研究了腔損耗及閾值和激射波長的關系，即損耗越大閾值越高，激射波長越短。
  8. This dissertation mainly studies the pulse compression waveform designing and signal processing, including the following aspects : firstly, by the pulse compression basic theory, the linear frequency modulation signal ( lfm ), binary phase - coded signal ( bc ) and stepped - frequency ( sf ) signal are discussed respectively including the ambiguity function, pulse compression and spectrum characteristic

    本文主要進行脈沖壓縮雷達波形設計以及信號處理方面的研究，主要體現在以下幾個方面:首先，從脈沖壓縮基本理論出發，分別給出了線性調頻、二相編碼和頻率步進信號的模糊函數、脈沖壓縮以及頻譜特性，對多普勒性能進行了簡要分析。
  9. The highest chl content and the highest photosynthesis rate of hull of a whole panicle were about 25 % and 20 % of those of flag leaf. ( 2 ) the absorption spectra of chl was different between flag leaf and hull, the absorbance of the medium that contain chl of hull was more strong than that of flag leaf in zone of short wavelength when the chl concentration of medium was the same. ( 3 ) the weight of the hull increased gradually after heading, the weight of the hull in the upper part of the panicle is higher than in the lower part of the panicle

    谷殼與旗葉相同葉綠素濃度提取液的光吸收光譜特性不同，在短波區谷殼葉綠素提取液的光吸收明顯比旗葉葉綠素的高；在抽穗后，谷殼的重量會有所增加，但穗下部谷殼的重量始終比穗上部的輕；相關分析表明，谷殼的重量與最終粒重呈極顯著正相關關系。
  10. The detailed experimental investigation of the distribution and evolution of the mean velocity profile were executed. the signal of instantaneous velocity, the energy spectra of velocity and wave characteristics in the boundary layer have been analyzed

    對局部加熱的水平平板下表面邊界層內的時均速度的演化規律進行了詳細的測量，同時對速度脈動信號以及速度能譜進行了分析，並對邊界層內的波動特性進行了研究。
  11. The main tasks and innovative points of this study as follow : 1. based on the spectrum anlysis, statistical characteristic and snr ( signal to noise ratio ) of hyperspectral remote sensing image, some optimal bands for desertification monitoring was selected

    本研究的主要工作和創新點包括以下幾個方面： 1從光譜特性、圖象的統計特徵和信噪比三個方面討論了高光譜遙感數據波段選擇的方法。
  12. In the light of field features in desertification areas, the data quality and band combination of different bands are assessed, the indicators, principles and methods for data assessment and band option are put forward to, and optional band combination for desertification monitoring is determined primarily. the data pre - treatment model for desertification monitoring is developed after studying the pre - treatment algorithm of restoration and rebuilding of hyperspectral resolution data. the spectral features and variation rules of different objects in experimental areas are understood and analyzed

    針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行定性和定量的評價，提出用於數據評價、波段選擇的指標、原則和方法；初步確定一個適用於荒漠化監測的優化波段組合，建立適合於荒漠化監測的數據預處理模式；初步分析、掌握研究區內各類地物的光譜特性及變異規律；針對荒漠化地區特點對多種分類方法進行探討分析；建立荒漠化監測主要評價因子的定量反演模型。
  13. A switchable and spacing - tunable dual - wavelength linear cavity edfl is demonstrated experimentally using this kind of bragg grating for wavelength selection. it exploits the birefringence characteristic of the fbg induced by transverse strain. transverse strain loading on the fbg allows the wavelength spacing to be controlled while axial strain shifts both wavelengths together

    2 .對軸向及側向應力共同作用下的光纖布拉格光柵的透射及反射光譜特性進行了理論及實驗研究，並首次把軸向及側向應力共同作用下的光纖光柵應用於光纖激光器進行波長選擇，得到了室溫下穩定工作的波長及波長間隔可調的可開關雙波長的摻鉺光纖激光器。
  14. The variation of optical spectrum of a special kind of optical fiber has been reported after - radiation, which may be used as a new kind of optical fiber filter

    摘要報導了2種結構的大芯徑石英光纖在輻照后的光譜特性的變化，發現摻雜光纖在輻照后具有光學濾波作用，由此可利用這種特性研製一種新型的光纖濾波器。
  15. A spectrum estimation operator is designed and applied in the genetic algorithm to derive the filter coeffients so as to get the satisfactory spectrum property

    設計了一種譜估計子，按照該估計子可使遺傳演算法找到較優的濾波器系數，得到滿意的雜波譜特性。
  16. The deposited cu - mgf2 cermet films were analyzed by xrd, ed, tem, ir, uv, ellipsometry and temperature - varied four - wire technique

    用ir 、 uv及橢圓偏振光譜技術測量分析樣品從紅外-近紫外波段的透射、吸收及反射光譜特性。
  17. The generation of radar clutter with arbitrary spectrum property is discussed

    摘要研究具有任意功率譜特性的雷達雜波產生方法。
  18. The process of realizing the genetic algorithm is presented by the clutter which has the log arithmic normal distribution and gaussian spectrum

    以具有對數正態分佈和高斯譜特性的雷達雜波產生為例，討論遺傳演算法的實現過程。
  19. The remote sensing model database system based on web and key technique

    的典型地物波譜特性數據庫研究
  20. Object spectrum characteristic

    地物波譜特性
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