spectral set 中文意思是什麼
spectral set
解釋
譜集-
First, the apparatus of spectral irradiance calibration is set up, and ultraviolet spectrum band uses a standard lamp offered by standard metrological institute of china, while vacuum ultraviolet spectrum uses a deuterium transfer lamp
地面輻射定標分為光譜輻照度定標和光譜輻亮度定標。光譜輻照度定標中選用了鹵鎢燈作為250nm 400nm標準光源，氘燈作為200nm 300nm的傳遞光源。 -
Red tide occurs randomly, with short duration and large incidence. airborne hyperspectral remote sensing technique can play an important role in red tide ' s monitoring. and the precondition is to acquire in situ spectral data of red tide, to grasp red tide ' s spectral characteristics by data processing and analysis and to set up spectral library of different dominant species of red tide
赤潮是海水中的浮游生物在一定條件下過度繁殖或聚集致使海水變色的一種生態異常現象，因其具有隨機性、突發性、持續時間短、影響范圍大等特點，客觀上要求利用航空高光譜遙感技術對其進行監測；但首要的前提與基礎性工作是大量獲取赤潮水體的現場光譜數據，通過處理與分析，掌握其光譜特性，不斷充實赤潮優勢種類的光譜數據庫。 -
Uniform and compact plzt and sno _ 2 ceramic targets, which diameter were 212mm and 221mm, respectively, had been successfully fabricated. ( 2 ) a rotating magnetic field rf magnetron sputtering system had been designed and set up, which showed high utilization efficiency of target, high films uniformity, and high deposition rate, etc. ( 3 ) the plzt and sno _ 2 thin films were investigated by afm, xrd, sem, and spectral photometer. the optimized processing parameters of preparing these films had been found
並以此為基礎分別制備了緻密、均勻、平整、直徑為212mm的plzt和221mm的sno _ 2陶瓷濺射靶材; （ 2 ）為克服現有磁控濺射設備的不足，提出了一種新的磁控濺射方案，採用該方案的設備具有:靶材利用率高、鍍膜均勻、成膜速度快等特點; （ 3 ）運用afm 、 xrd 、 sem以及雙光路分光光度計等分析手段對plzt和sno _ 2薄膜的微結構和性能進行研究，找到了制備plzt電光薄膜和sno2透明電極材料的最佳工藝條件。 -
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。 -
First we consider the spectral properties of the operator corresponding to this system and obtain that all points on the imaginary axis except for zero belong to resolvent set of the operator, zero is an eigenvalue of the operator and its adjoint operator with geometric multiplicity one
先討論了對應于該系統的主運算元的譜特徵並且得到了在虛軸上除了0點外其它所有點都屬于該主運算元的豫解集， 0是該主運算元及其共軛運算元幾何重數為1的特徵值。 -
It can provide higher speed and alleviate the spectral degradation which usually goes with the existing algorithms, as well as constrain speckle noise of radar images. in respect of image fusion algorithm, the fusion rules and operators are essential. a new set of fusion rules and corresponding operators are given in this thesis
實驗證明，在融合源圖象特性差異較大的情況下，該演算法與已有的基於小波分析的遙感圖象融合演算法相比較性能更優，具有運算速度快、減少光譜退化的特點，並能在一定程度上抑制相干斑噪聲。 -
The article mainly includes the design of experimental set and concentration retrieve arithmetic. as doas technique is a kind of weak light detecting technology, it is the key to increase the snr ( signal - to - noise ) of spectral signal
由於差分吸收光譜技術是一種弱光檢測技術，所以對于其相關實驗裝置來講，提供高的信噪比是關鍵，從而使得限制雜散光、消除各種光電子噪聲等變得很重要。 -
An n - fold darboux transformation with multi - parameters for coupled nonlinear evolution equation of multi - component hierarchy is set up with the help of a gauge transformation of the spectral problem, from which the exact solutions of the nonlinear equations are given
摘要利用等譜問題的規范變換，為一對耦合的非線性演化方程建立了一個具有多個參數的n -波達布變換，進而求出了該方程的精確解。 -
( 2 ) a series of new methods of feature extraction based on the optimal discriminant analysis are proposed, including the new lda algorithm based on the spectral decomposition of within - class scatter matrix sw which is effective when the number of class is small, an improved algorithm of optimal set of discriminant vectors based on the svd which is effective for face recognition, and the kernel fisher discriminant method ( kfdm ). experimental results on orl show that the kfdm outperforms conventional fisher discriminant methods in face recognition, however the computational load is much higher than those of conventional algorithms
（ 2 ）提出了基於最優鑒別分析的圖象特徵抽取的一系列新方法，它們包括：基於對類內矩陣s _ w進行譜分解的f - s最優鑒別矢量集方法，該方法在類別數比較小時非常有效；一種改進的基於svd的最優鑒別矢量求解演算法，將該方法用於人臉識別時有較好的性能；非線性最優鑒別矢量集方法，該方法雖然有效，但計算時間較長。 -
Second, a novel algorithm named model predicition ( mp ) is proposed to wipe off spectral correlations of hyperspectral images. mp algorithm finds the linear model of hyperspectral images, in which predictive coefficients are set up that is based on snr. because predictive coefficients include current spectral band, average entropy of the error data is decreased and snr is increased after mp
Mp演算法建立了高光譜圖像的線性模型，推導出了信噪比意義下的最佳預測系數，由於系數中包含了當前譜帶的數據，因此經過mp演算法去相關之後，殘差圖像的平均熵有所降低，同時信噪比提高很多。 -
The paper is concerned with the eigen functions of optical fields in dielectrics, the theories of optical waveguide eigen mode, the characteristics of optical waveguides diffracted field, the theories of mode coupling in optical waveguides and the spectral response theories and simulating method for arrayed waveguide grating. in this paper, a set of beam propagation theory based on eigen modes analysis is set up which afforded theoretical basis for designing and analyzing awg devices. experiment of fabricating sio _ ( 2 ) layer by using porus silicon is also carried out in this paper, which is a new method for fabricating waveguide cladding layer
本文以設計陣列波導光柵器件為目標，對介質波導光場的本徵波函數，光波導本徵模理論，光波導衍射場特性，光波導模式耦合理論和awg器件的光譜響應特性及模擬方法進行了深入研究，建立了一套基於本徵模式場分析的光波導光束傳輸理論，為波導器件的設計提供正確的理論基礎，並嘗試了利用多孔硅生長厚的二氧化硅，用於製作波導包層材料。 -
This thesis studies in adaptive equalization problems, and put the emphases in various adaptive equalizers, channel model, etc. finally, the performance of the presented blind equalizer which are used in digital microwave radio channel are compared and evaluated. the results are of great important in the development of more spectral efficient digital microwave radio - links. the focus is set on low - complexity adaptive equalizers for implementation in digital microwave radio systems
本文圍繞著自適應均衡技術進行了深入的探討，重點研究了自適應均衡演算法、通道模型等問題，並針對幾種盲均衡演算法應用於數字微波無線通道的均衡性能進行了模擬和比較，其結果對于開發具有更高頻譜利用率的數字微波通信鏈路有著重要的指導意義。
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