波能譜 的英文怎麼說
中文拼音 [bōnéngpǔ]
波能譜
英文
wave energy spectra-
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。The composites not only show excellent photo - responsive properties in the visible and near - ir region ( 450 ~ 850 nm ), but also show complementary and synergetic enhancement effects in photosensitivity in the visible and near - ir region. the reasons for the enhanced photoconductive properties and new effects are explained in terms of the partial and directional charge transfer from phthalocyanine to azo compound in these azo / tiopc composites. 2
研究發現這兩種復合材料體系在可見光區和近紅外光區( 450 850nm )均有光譜響應,光譜響應范圍得到了拓寬,並在該波長范圍內都有優良的光電導性能,呈現出明顯的光電導性能協同增強和互補效應,該復合材料體系中酞菁向偶氮發生的部分定向的電荷轉移是光電導性能協同增強和互補效應產生的物理起因。By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw
同時利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw波形參數中最為重要的脈沖寬度進行了分析,給出了更為嚴格的約束條件,保證了信號處理后距離譜峰值的唯一性。最後,分別介紹了fmpcw和fmicw信號的不同處理方式,並對兩者不同的時域濾波性能進行了比較,並對二者的差異進行了分析。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。On the basis of analysis and comparison between two drills, one in the center of bohai sea, another near the west shore of bohai sea, ultra - long electromagnetic wave remote sensing can be applied to forecast the interfaces between the different rocks, and help to choose the location of drill and drilling plan. the ultra - long electromagnetic remote sensing also can be applied to general investigation in the prospecting area and organizing the structural map on the basis of the profiles and plane. based on the analysis of the ultra - long electromagnetic wave curves from tanggu to dalian, the geological body to effect the high gravity and magnetic anomalies could be a mafic intrusion. the magma activity provided the heat source to organic maturation in the center of bohai sea, so the center of bohai sea could be the prospection of deep gas in bohai sea
根據渤海西岸和渤海中部兩口探井的探測和對比實驗分析,利用超長電磁波遙測技術可以根據已知探井的探測對比分析預測新探井的巖性界面,協助井位的選址和設計。另外,利用超長電磁波的探測技術可以從剖面和平面上對遠景區進行普查性探測,編制遠景區的構造圖。根據塘沽-大連探測的超長電磁波頻譜曲線剖面對比分析,證實引起渤海中部重磁異常高的地質體可能是基性超基性巖體。Dual randomized modulation technique is more effective than existing simple random modulation schemes, such as random position modulation or random switching frequency modulation, in dispersing the power spectrum
與已經存在的任何一種單隨機方案相比,雙隨機調制技術驅散諧波能量而使之具有更寬的帶寬,能更加有效地減少功率變換器系統的離散譜峰值。Because the photospheric temperature of carbon stars are less than 3000k and the temperature of rich - dust envelope formed by the mass loss is lower, and therefore most of the energy from carbon stars are radiated between 1 to 60um range, in which the vibrational and ro - vibrational bands of many molecules also lies, the study of infrared spectra in this wavelength range is very important to reveal chemical compositions, dust formation process, the atmospheric structure and evolutionary status of stars
碳星光球的有效溫度不超過3000k ,同時較大的質量損失率形成了富碳的塵埃殼層,以致於它的輻射能量主要集中在1 ? 60 m的紅外波段上,並且許多分子的轉動振動能譜也集中在紅外,因此在紅外波段的研究對揭示碳星化學成份及其分佈、塵埃形成過程、恆星大氣結構和演化狀態都有十分重要的意義。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。Energy spectrum ananlysis using wavelet technique is studied and applied to deal with feature exstraction of missile fault signals, from which a feasible feature vector is created, to be used by the fdes based on inn. parameters for diagnosis are also selected based on two different criteria : the cluster divergence of sample datas and the diagnosis reliability of parameter candidates
研究了小波能量譜分析技術在地空導彈故障數據特徵提取方面的應用;提出了基於樣本綜合離散度和參數診斷置信度兩種診斷參數選擇的方法,從而為基於集成神經網路的故障診斷做好了準備。Then the hamiltonian of the io algebraic model was diagonalized on the symmetrical bases, and the energy spectra of benzene and the corresponding wave function are obtained
在對稱基上將io代數模型中的哈密頓量對角化,得到苯分子振子數高達10的能譜及相應的波函數。In the region of shorter wavelength ( r < 10nm ), measurement reflectivity is much lower than design reflectivity, so the making of high reflectivity multilayer mirrors is at the phase of exploring. the aim of the paper is to design and fabricate five mulitilayer mirrors in shorter wavelength of soft x ray region and makes up of soft x ray spectrometer which is applied to icf experiment
本論文所完成的是在軟x射線短波段的五個波長處(最短波長為1 . 03nm ) ,研製具有實用反射率的軟x射線多層膜反射鏡,並應用於慣性約束核聚變( icf )實驗中的軟x光能譜測量。Because the characteristics of frequency domain is slightly affected by the coupling state and only related with the defects by revising of the system, the technology of ultrasonic wave spectrum analysis is necessary tool for quantity or automatic testing
由於頻域特徵受耦合狀態等的影響較小,且經過系統修正後,能夠做到頻域特徵僅與缺陷有關,因此超聲波頻譜分析技術是超聲波定量檢測或自動檢測不可少的工具。Current. in order to make diffluent piers with low ridge to be popularized and applied, the surface wave of low fr. current is chosen as the research object. we measure the surface wave elements and the velocity distribution of various diffluent piers scheme by the experiment of physical model. we also analyze the average wave height, the the average value of the square of wave, unit width of the wave ' s energy, the probability density distribution of wave height, and the power chart character, so as to reveal the weakening wave mechanism of the diffluent piers
低fr水流的核心是波浪問題,為了低坎分流墩的推廣應用,本研究以低fr水流的表面波浪作為研究對象,通過物理模型試驗,對各種分流墩方案消能工的下游水面波浪要素、流速分佈進行測試,分析低坎分流墩下游波浪的平均波高、均方根、單寬波能、波高概率密度分佈及功率譜特性變化規律,從而揭示了低坎分流墩的削波機理。The process of target identification is formulated, which involved feature extraction, dimension reduction and classification. for solving the overlap of each subspace of a wavelet library in frequency, there are two approaches that are best basis ( bb ) and local discriminant bases ( ldb ). their measure and searching algorithm were researched
從數學的角度描述了目標識別過程,依據cwt和多分辨分析表示信號的特點,提出了以信號尺度?小波能量譜、時間?小波能量譜、多分辨分解系數和各子帶能量強度為特徵的方法。By analysis of frequency spectrum based on matlab platform, wavelet method in the application of cutting out a section of inputting earthquake wave was presented. in the process of pseudo dynamic test results, the method of non - dimensional representation and analytic representation of hysteretic curve was provided. the above two methods will help to compare dissipation energy capacity of this structure at the different acceleration peak value stage of pseudo dynamic test more precisely and comparably
通過基於matlab的地震波頻譜分析,說明了小波分析方法在擬動力試西安建築科技大學博士學位論文驗中地震波截取方面的應用;在擬動力分段試驗數據的處理方面,本文將試驗結果的無綱量表示方法以及曲線的多項式擬合法引入滯回曲線的數據處理,這將有助於擬動力試驗不同加速度峰值條件下,各階段結構耗能能力的客觀比較。The power spectral density of ship ' s motion is calculated based on ocean wave energy spectrum, and the movement spectrums of the ship ' s random motion are calculated and created
根據海浪波能譜,計算了艦船搖蕩運動的功率譜密度和艦船的隨機搖蕩運動。Then, the obtained energy spectrum of the generated torsional alfven wave is considered as boundary condition of coronal loop to calculate the subsequent wave dissipation
將計算得到的激發扭轉alfven能譜做為邊界條件代入,可以對扭轉alfven波在冕環中的耗散做一些定量的分析。The airborne forward ? ooking windshear weather radar is a sort of microwave doppler radar. jt has weather detection, turbulence detection, windshear detection and other functions
機載前視風切變氣象雷達是具有氣象、湍流、低空風切變探測等功能的微波多譜勒雷達。The surface morphology and root - mean - square surface roughness of the sio _ 2 films are characterized by scanning electron microscopy ( sem ) and atomic force microscopy ( afm ). the compositional properties of the sio _ 2 films are analyzed by x - ray photoelectron spectroscopy ( xps ). the effects of experiment parameters are discussed
對採用不同實驗參數沉積得到的硅基sio _ 2光波導薄膜材料,用掃描電子顯微鏡( sem ) 、原子力顯微鏡( afm ) 、 x射線光電子能譜( xps )等方法對材料的表面形貌、粗糙度以及化學組成等特徵進行了研究。By the simulation results, it is verified to have excellent performance. a class of uncertain nonlinear systems which can be transformed into strict feedback nonlinear systems is investigated based on feedback linearization approach of differential geometry. an adaptive robust controller with l2 - gain is proposed by using backstepping technique. the numerical method is given and it is proved to be practical by simulation results. lt is a more practical method to solve hji for a special nonlinear system because the problem to solve hji is very difficult in general case, and only get the approximate solution when it can be solved. an effective method to solve hji is presented for a class of nonlinear system which is ordinary
考慮到一般情況下,求解hji是非常困難的,並且也只能得到近似解,因此,在系統設計時,針對具體非線性系統的特殊結構以求解hfl是系統設計的一種行之有效的方法,基於以上考慮,對一類具有廣泛工程背景的非線性系統,提出了一種求解hfl的有效方法,便於實際應用。最後,從波能譜的角度,研究隨機海浪的模擬問題,給出了船舶橫搖模擬中需要的隨機海浪有效波傾角的模擬方法。分享友人