spectral bands 中文意思是什麼

spectral bands 解釋
譜帶
  • spectral : adj. 1. 鬼的；鬼怪（似）的。2. 【物理學】光譜的。
  • bands : 帶狀的中性粒細胞
  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. Colour filters are not very effective in isolating narrow spectral bands.

    一些濾色片不能很有效地分離狹窄的光譜帶。
  3. Exposure ratios between spectral bands are determined from in situ reflectance spectra of objects in scene.

    光譜波段之間的曝光量比值，可以根據景物中目標的就地測定的反射光譜確定。
  4. Study on optimal bands selection of multi - spectral remote sensing data

    多光譜遙感數據最佳波段選擇的研究
  5. For the bands selection of hyper spectral image, an algorithm called selected projection pursuit is established and a quick calculating method is developed, the calculating speed is increased 80 ( the bands number of hyperspectral image ) limes. the nonlinear principal curves is researched, it is the nonlinear expansion of pca

    針對高光譜圖像光譜波段的最優波段選擇問題，構造了選元投影尋蹤演算法，並為此建立了一種快速選元投影尋蹤演算法，使演算法的速度提高將近80倍（波段總數的倍數） 。
  6. 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。
  7. 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。
  8. Compared to multi - spectral image, hyperspectral image is high spectral resolution, narrow band, and has many bands. it can distinguish targets with reliability

    與多光譜圖像相比，高光譜圖像光譜波段數目多、光譜解析度高、波段寬度窄，能夠以較高的可信度區分和辨識地物目標。
  9. The method plays an important role in distinguishing and studying the complicated and confused spectral characteristics and mechanisms of the rare earth. ( 2 ) it is found and explained that due to the boltzmann distribution law at room temperature, the positions of the fine peaks of the photoluminescence band stemming from the transitions between an excited state and the ground state of a re3 +, match these of the absorption bands from the transitions between the ground state and the excited state. the stark split energy levels of the ground state 4i15 / 2 and two excited states 2s3 / 2 and 4f9 / 2 of the er3 + in er203 have been determined

    薛理輝武漢理工大學博士學位論文摘要（ 2 ）發現在常溫下，由於boltzm ~分佈律的作用，在re3 +的基態電子態和激發態間躍遷所產生的發光譜帶和吸收譜帶中的精細譜峰的位置一一相同，解釋了產生這種關系的原因，並弄清了er203中er3 +的基態電子態4lts . 12和激發態電子態2凡/ 2 、 4凡/ 2的stark能級分裂情況，確定了常溫下erzo3中er3 +的4了15 / 2一2凡/ 2和『 i ， 5 / 2一『凡/ 2精細能級間的躍遷形式。
  10. The first ytterbium - doped yttrium - aluminum garnet ( yb : yag ) laser action was reported back in 1965 using a lamp - pumped rod at 77 k. because of poor spectral overlap of the lamp with the the trivalent ytterbium ion ( yb3 + ) absorption band, the efficiency was very low. lamp - pumped nd : yag lasers fared better due to the multiple pump bands of neodymium

    但yb3 +離子的泵浦吸收帶與閃光燈光譜匹配很差，導致其激光效率很低;而nd : yag的激活離子（ nd3 + ）有多個泵浦帶與閃光燈光譜匹配，較好適應了燈泵浦的需要，長期占據了固體激光器的主導地位。
  11. Based on the principle and theoretical mechanism of remote sensing technology and aeromagnetic technique, in combination with the physical properties and adsorption characteristic spectral bands of iron oxides which widely occur in nature, this paper advances a new opinion concerning the integrated application of remote sensing technology and aeromagnetic technique in the field of geosciences

    摘要依據遙感和航磁技術的方法原理及理論機制，結合廣泛賦存於自然界巖石中的鐵氧化物之磁性與光譜吸收特徵譜帶的研究分析，提出在地學領域中綜合應用遙感與航磁技術方法的新認識。
  12. 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。
  13. Detailed emission and excitation spectral characteristics have been analyzed and discussed. in addition, spectral red - shift has been found in both charge transfer bands in nanocrystalline y2o3 : eu 3 + compared to the bulk material. the number ratio of s6 sites to c2 sites is also smaller in nanocrystalline y2o3 : eu3 + than that in the bulk one

    與體材料相比，兩種格位的電荷遷移帶在納米材料中都發生紅移；相對于c _ 2格位的電荷遷移帶， s _ 6格位的電荷遷移帶強度在納米材料中比在體材料中明顯降低。
  14. The results show that the maximum likelihood classification based on variogram texture and spectral bands can perfectly define the grades of beach sandy land and inner desertification, and the maximal classification precision comes up to 92. 4 %, which proves that geostatistical texture is effective in the application of desertification monitoring

    結果表明，運用變異函數紋理結合光譜波段的最大似然分類方法能夠很好地界定海灘沙地和內陸荒漠地的等級，最高分類精度達到92 . 4 % ，證明了基於地質統計學的影像紋理在實現該地區遙感荒漠化監測方面的有效性。
  15. Nuclear rotational spectral theories and its application to superdeformed bands

    轉動譜的若干理論及其對超形變帶的研究
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