波譜成像 的英文怎麼說

中文拼音 [bōpǔchéngxiàng]
波譜成像 英文
h31mr spectroscopy 1h31mr
  • 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）...
  • 成 : Ⅰ動詞1 （完成; 成功） accomplish; succeed 2 （成為; 變為） become; turn into 3 （成全） help comp...
  • 像 : Ⅰ名詞1 （比照人物製成的形象） likeness （of sb ）; portrait; picture 2 [物理學] image Ⅱ動詞1 （在...
  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. In recent years, the worldwide researchers pay much attention to fourier telescopy. it is an active imaging technique that encodes the information in the temporal instead of spatial domain, then receives the speckle and deposed of it to reconstruction the object image. now, the high - resolution technique is under the condition of deeply researched

    它是一種主動式干涉成像技術，這一技術通過時域內的相位的調制完成直線條紋對目標的掃描，從而達到對深空目標頻譜的抽樣，然後接收其散射回波，對回波信號進行處理，進而還原出目標的像。
  3. The main research contents of the physical design include : presenting the domestic and international status of space weather and expanding on the need and the importance about the space weather forecast ; sorting the disastrous space weather and discussing their effects and adapted prediction methods ; analyzing the solar disturbing resources of space weather and the precursor or concomitant phenomena of solar eruption based on the newest observational results ; probing into the radiation principle of solar short - wave ray and presenting the computing methods about solar continuum and line spectrum radiation ; extrapolating physical methods of reconstructing the temperature and the emission measure of coronal plasma ; argumenting the effective observing spectrum for space weather empirical forecast and space weather numerical forecast

    物理設計的主要研究內容包括：分析目前國內國際空間天氣預報的發展現狀及開展空間天氣預報的必要性和重要性；分類討論了災害性空間天氣的種類、影響及目前國際上的預報方法：分析了空間天氣太陽擾動源及擾動源爆發的先兆現象或者伴生現象；討論了太陽短波輻射線譜和連續譜輻射強度的計算方法：推導了利用望遠鏡多波段的觀測結果反演日冕等離子體溫度、發射量等參數的物理方法：論證了開展空間天氣經驗預報和發展數值預報有效的成像譜段。
  4. Finally, near - field microwave imaging methods are studied. combining near - field measurement and target geometrical shape, a new near - field microwave imaging approach by plane - wave spectrum is produced. synthetic plane - wave technique and near - field imaging is studied, simulation results of this approach are given

    把近場散射測量和目標幾何外形相結合，提出了利用平面波譜展開進行近場微波成像的新方法；對綜合平面波技術和近場微波成像作了研究，並對這一成像方法作了模擬。
  5. Nuclear magnetic resonance ( nmr ) and magnetic resonance imaging ( mri ) technologies are widely used for physical, chemical, material and biomedical analysis and medical diagnosis

    摘要核磁共振波譜和核磁共振成像技術（ mri ）已經成為一種廣泛應用於物理、化學、材料、生物醫學等領域的重要研究工具和醫療診斷手段，但是儀器復雜、價格昂貴。
  6. This text reviews the findings of 3 dimensional mr imaging, functional magnetic resonance imaging, magnetic resonance spectroscopy, and diffusion tensor mr imaging in alzheimer ' s disease for the past few years, and explains the perspective research involving the four mentioned magnetic resonance imagings in the diagnosis and early diagnosis of alzheimer ' s disease

    本文對近年來的核磁共振成像三維測量、功能性核磁共振成像、核磁共振波譜成像和核磁共振彌散張量成像4種技術對阿爾采末病的研究結果進行了綜述，並闡述了以上4種核磁共振成像技術之於診斷和早期診斷阿爾采末病的研究前景。
  7. 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。
  8. Because of modis predominant space and spectral differentiate rate, it ’ s has been broadly applied to various field, in the aspect of snow monitoring, modis has been successfully using a normalized difference snow index ( ndsi ) to provide global automated binary maps of snow cover. the ndsi is a spectral ratio that takes advantage of the spectral difference of snow in short - wave infrared and visible spectral bands, although it has higher precision, it can only discern one pixel to snow or other features, can not satisfy accurate drainage basin snow cover mapping and snow parameter extracting

    Modis數據因其優越的空間解析度、波譜解析度，已被廣泛的運用於各個領域，在積雪監測方面，已成功地運用歸一化差分雪蓋指數（ ndsi ）製作每天的全球雪蓋分布圖， ndsi是基於雪對可見光與近紅外波段的反射特性和反射差相對大小的一種測量方法，然而它只能將一個像元辨別為積雪或非積雪，滿足不了高精度應用要求。
  9. Pathological changes of amyotrophic lateral sclerosis with in vivo magnetic resonance spectrum and diffusion tensor imagings

    在體磁共振波譜及擴散張力成像觀察肌萎縮性側索硬化的病理變化的研究
  10. It is shown that the spectrum of the backward scattering signal of a rotating target is a slice of the spectrum of the scattering intensity function of the target in the corresponding aspect of the system, weighted by the spectrum of the incident signal

    本文簡要分析了目標電磁散射與impsar成像有關的信號模型。經對沖激雷達旋轉目標某一方向的回波信號的分析，得知它的頻譜是目標散射函數頻譜在對應方向被發射信號頻譜加權了的一個切片。
  11. Awg possesses an essential function of coherence system - " composing frequency and generating image ". therefore as far as spatial frequency field is concerned, awg is an optical integration of coherent system : two slab waveguides similar to two fourier lenses of one dimension and twice fourier transform of optical signals are realized. here the arrayed waveguide region is frequency spectrum region

    Awg具有相干系統的「分頻成譜、合頻成像」這一本質功能，因此若從空間頻域的角度來看， awg就是一個相干系統的光學集成：兩個平板波導類似兩個一維傅里葉透鏡，實現光信號的兩次傅里葉變換；而陣列波導區即為頻譜區。
  12. The angle spectrum of inputting optical signals is received by the input surface of arrayed waveguides. whereas the diffraction process of light beam outputed in slab waveguide is a process of " composing frequency and generating image ". the reason that fraunhofer diffractive pattern can be gained on outputting waveguide surface is that output ends of arrayed waveguide distribute on the arch structure which leads bent phase factor to offset the quadratic phase factor in fresnel diffraction

    輸入平板波導內光束的衍射過程是「分頻成譜」的過程，在陣列波導的輸入面接收到的是輸入光信息的角譜；而輸出平板波導內光束的衍射過程則是「合頻成像」的過程，正是由於陣列波導輸出口排列分佈在圓弧形結構上，其彎曲位相因子消去了菲涅耳衍射中的二次位相因子，從而在輸出波導面上能夠得到夫瑯和費衍射圖樣。
  13. The concept, advantages and history of bistatic isar are introduced first in this paper, then 2 - d turntable imaging of monostatic isar the special example of bistatic isar is studied. on the basis of monostatic isar four imaging algorithms are analyzed, including fft algorithm, filtered backprojection algorithm, spectrum extrapolation algorithm and esprit algorithm, and compared in the small and big angel of imaging. on the basis of monostatic imaging the 2 - d turntable imaging principle of bistatic isar is studied,

    本文首先闡述了雙站逆合成孔徑雷達的概念、優點和發展歷程，然後研究了雙站逆合成孔徑雷達的特例? ?單站逆合成孔徑雷達對轉臺目標的二維成像演算法，並在此基礎上分析了四種主要的轉臺成像演算法， fft演算法、濾波逆投影演算法、譜外推演算法和esprit演算法，並對以上各種演算法分別在小角度和大角度下的成像性能進行了比較。
  14. The space observation in soft x - ray and extreme ultraviolet ( euv ) region is an important portion of the space astronomy and an effective solar observation method developed increasingly. in this thesis we designed a euv multi spectrum space solar telescope ( eut ) based on the requirement of high angular resolution and wide field of view for solar observations ; investigated the transmission performance of eut ; invented a method of eut pointing calibration on the space orbit and solved the high precision pointing calibration problems ; constructed a prototype of 17. 1nm telescope, tested the possibility of eut design, and developed some cutting - edge techniques

    本文根據空間平臺上高解析度對日觀測的需要，設計出一種可以在四個極紫外波段對日同時成像多光譜太陽望遠鏡（ eut ） ；研究了極紫外（ euv ）波段太陽望遠鏡光學傳輸特性；提出了真空紫外波段在軌指向的標定方法，解決了高精度指向標定問題；研製出一臺17 . 1nm望遠鏡的地面樣機，驗證eut設計的可行性，攻克了部分關鍵的技術難關；為進一步的研究工作奠定了基礎。
  15. However, these advantages are at the expense of high dimension and large data amount, besides, the high relativity of hyperspectral image bands makes much information redundancy

    但是，高光譜圖像的這些優點是以其較高的數據維數和較大的數據量為代價的，且高光譜圖像波段間相關性較高，造成了信息的冗餘。
  16. Investigation using remote sensing ( rs ) technology can breakthrough the limits of traditional methods, make full use of its capability of integration, visualization, rapidity and vast - dimensions analysis, and get better results the paper takes the up - to - date landsat - 7 etm + data, which is the most widely used, and quickbird data, which has the highest resolution nowadays, and according the features of the data and landslides, processes the quickbird data with 1 : 10 000 dem orthophoto correction and the landsat - 7 etm + data as follows : ( 1 ) selecting optimal spectrum band : selects 753 bands as the optimal bands ; ( 2 ) image intensifying : selects the principle components processing method on the basis of comparing several image intensifying methods ; ( 3 ) rigour geometric direction : corrects the geometric distortion of the map ; ( 4 ) image fusion : mainly takes his space transform fusion and resolution fusion method, and acquires maps with higher spectrum resolution as well as space resolution. after that, the visual effect of the image has been enhanced, and the interpretation precision

    採用遙感技術，可以突破傳統調查方法的限制，發揮其宏觀、綜合、直觀、快速的特點，取得更好的效果。論文選取目前應用最廣的陸地衛星最新系列landsat - 7etm +數據和空間解析度最高的商業衛星quickbird數據作為主要的數據源，根據數據的特點及滑坡災害應用特徵，對quickbird遙感數據則基於1 ： 10000dem進行了正射校正，對etm +遙感數據進行了波段優選，選取了753作為最佳組合波段；圖像增強，通過各種增強處理方法的效果對比，選擇主成分分析法對圖像進行增強；幾何精校正，糾正圖像的幾何變形；影像融合，主要選取了效果較好的his空間變換融合和解析度融合，得到的圖像既具有較高的光譜解析度，同時也具有較高的空間解析度。經過上述數字處理，較好地改善了圖像的視覺效果，提高了圖像解譯的精度。
  17. They currently use conventional, high speed and high field magnetic resonance ( mr ) imaging, mr spectroscopy, optical imaging, magnetoencephalography ( meg ), and electroencephalography ( eeg ) to explore properties of biological systems and to develop ways to treat human pathologies such as cancer, mental illness and cardiovascular disorders

    當前他們使用傳統、高速和高磁場的核磁共振（ mr ）成像、核磁波譜、光學成像、腦磁（ meg ）和腦電（ eeg ）方法來探索生物學系統的性質並開發治療人類疾病，如腫瘤、心理疾病和心血管紊亂的方法。
  18. Absorption - band parameters such as the position, depth, width, and asymmetry of the feature have been used to quantitatively estimate composition of samples from hyperspectral data. so spectral absorptions are very important feature bands in use of hyperspectral classification and targets identify, this paper extracts absorption features of actual hyperspectral image by continuum removed method which is very useful. then tested both of them by

    吸收峰波段參數例如波長位置、深度、寬度、斜率、對稱度、面積等常常被用來定量的估計高光譜樣本的組成，因此光譜的吸收峰是高光譜識別分類應用中很重要的特徵波段，論文通過包絡線去除這種很有效的光譜分析工具提取出了實際的高光譜圖像的地物光譜的吸收峰參數。
  19. The imaging of target range profiles of step frequency mmw radar based on spectrum estimation with wavelet transformation

    基於子波變換譜估計的頻率步進毫米波雷達目標成像
  20. Because the noises in ir images changes slowly and its frequency components con - centrate on the range of low frequency. the wgos is used to suppressing background and noises. just for the three origin images in this dissertation, the global threshold in the algorithm is enough to divide up targets from the background

    紅外圖像的噪聲通常為脈沖噪聲，具有高頻特性;而紅外圖像的背景變換比較緩慢，其頻譜成分多集中在低頻區域，所以本文在對圖像特性分析的基礎上，設計改進了基於加權廣義次序統計濾波器的背景抑制的演算法。
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