相干相減 的英文怎麼說
中文拼音 [xiānggānxiāngjiǎn]
相干相減
英文
coherent subtraction-
Its adherents find its commonsensible approach to daily living an effective counterweight to materialism, and helps them to reduce the intrusion of technology into their lives
相信風水的人,覺得他對日常生活問題,簡單易懂的解釋,能夠幫助他們抵抑物質主義,減輕科技對生活的干擾。The density distribution shows coronet as to the single mode. and the density distribution shows equality as to the multi - modes, except the little hollow in the optical fiber core. the second is coherent incidence light
結果表明,對于非相干情況,輸出光強為中心對稱和沿徑向非均勻衰減形式;對于相干情況,輸出光強分佈為復雜的峰谷分佈形式。The plan of speckle noise reduction we proposed is use the garrote shrinkage function assisted by edge information of scale 2. we compare the speckle reduction results by conventional soft - valve, hard - valve and lee filter methods, and get very good conclusion
我們提出的相干斑抑制方法是利用小波變換檢測圖像尺度為2的邊緣信息,再利用檢測出的邊緣信息利用garrote削減函數進行小波域的相干斑噪聲濾除。Greenschist facies, low green schist facies and brittle shear deformation facies. the attitude of different structural element of the yagan mcc are keeping coordination. analysis of kinematics demonstrates the sse - directed shearing - off of the hanging wall relative to the footwall along the penetrative mylonitic lineation
其變形相由變質核中心到上盤巖系(由深至淺)依次為高角閃巖相? ?綠片巖相? ?低綠片巖相? ?脆性剪切變形相,顯示亞干核雜巖由中心向邊部變形層次遞減的特點。On the other side, we use the method of optical formation process to introduce two fundamental filtering function in frequency domain of coherence system of awg two optical processors are designed, that is optical signal add / minus and phase filter
另一方面,運用光學信息處理方法,我們探討了awg型相干系統頻譜區兩類基本的濾波函數的引入,設計了兩種光信號處理器:光信號加減器以及位相,濾波器。It has been shown that whether resonant or non - resonant interaction system, the kerr effect weakens the coupling of the field - atom, shortens the cycle of quantum collapses and revivals of the atomic level occupation and makes the nonclassical correlation properties steady. kerr effects on the properties of the correlation, on the correlation intensity between the two - mode, on the photon - number distribution and on the bunching or antibunching effect of the two - mode su ( 1, 1 ) coherent states produce obviously different characters when it is changed the initial intensity of the light field. that is to say, kerr effect on the two interaction systems is accorded
數值計算結果表明:無論是共振還是非共振相互作用, kerr效應均使原子與光場的耦合減弱,原子布居的崩塌與復甦的周期縮短,光場的非經典相關的穩定性增強;在初始光場較弱和較強兩種情況下,類kerr介質對雙模su ( 1 , 1 )相干態場兩模間的相關性、相關程度以及光子的聚束與反聚束效應產生的作用均有明顯的區別,即kerr效應對系統在共振及非共振作用時的影響是一致的。It has been shown that : the little indentation which represents the quantum noise of the system appears in the evolution curves ; the quantum noise which is caused by virtual photon field gradually becomes weak when w increases, the quantum noise increases when n increases ; the virtual photon process make the antibunching effect strengthen, make the squeezing degree deepen obviously, and lead to the additional vibration of entropy, the oscillation extent of the additional vibration of entropy increases when n increases and decreases when co or g increase. besides, the quantum dynamics of two coupling atoms interacting with a single mode ligh t field in a kerr medium is studied in this paper ; the influences of the kerr effect on the mean photon number, the degree of second order coherence of field, the evolution of the field entropy and the squeezing effect are also discussed
)的增大,量子噪聲分別減小和增大;虛光子過程使光場的反聚束效應增強,使光場的壓縮程度明顯加深,並引起了附加的「熵振蕩」 ,這種附加「熵振蕩」的幅度將隨著光場初始平均光子數( ? )的增加而增大,隨著光場頻率和原子間耦合系數g的增大而減小。本文還研究了充滿kerr介質腔中「耦合雙原子-單模光場」相互作用系統的量子動力學性質,研究了克爾效應對場的平均光子數、二階相干度、場熵演化特性及光場壓縮效應的影響。The principal advantage over the dual filter coherent detection is a four - fold reduction in bandwidth
與雙濾波器相干檢波相比的主要優點是帶寬減少了四分之三According to these accomplishments, several techniques are expounded emphatically in this paper, including 3d refraction statics, coherent noise suppression by prestack wave field separating ( prestack fx noise attenuation ), 3d prestack multiple domain random noise attenuation, multiples attenuation, nmo of unsymmetrical hyperbola, dynamic replacement of wave equation, surface - inconsistent residual static, super bin stacking, poststack depth migration and prestack depth migration. all the techniques have been applied in seismic processing of 2d, 3d and wide - line profiling and obtained good results
本文根據項目組研究成果,重點閘述了三維折射波靜校正技術,疊前波場分離相干噪音壓制方法(疊前fx去噪) ,疊前三維多域隨機噪音衰減技術,多次波衰減技術,非對稱雙曲線動校正技術,波動方程動態替換技術,非地表一致性的剩餘時差靜校正技術,超面元迭加處理技術,疊后深度偏移處理,疊前深度偏移處理等。The vortices are caused by quantum - mechanical inference scatterers and are accentuated by evanescent states
渦流出現是量子相干散射造成的,並與衰減模式的存在有重要關系。In section one, we analyze the mechanism of lwi gain, and study the effects of the rabi frequency q of the driving field, the injection rates ratio rb / r ~, the exit rate r0, the decay rates ~ and rab between atomic levels, as well as 3 incoherent pump rate r on the gain without inversion, dispersion and population difference of the system. in section two, we discuss the effects of the detuning of the driving field and the probe field on the gain
在第一節中分析了無粒子數反轉激光增益產生的機制、研究了驅動場的rabi頻率、粒子注入速率比值r _ b / r _ c 、粒子退出速率r _ o 、能級間的自發衰減速率r _ ( c - b ) 、 r _ ( a - b )和非相干泵浦速率r對增益、色散和粒子數差的影響;第二節討論了驅動場和探測場的失諧對無粒子數反轉激光增益的影響。Confirming 1072hz and 2193hz to be the most important control frequencies after the cohere analysis between vibration and noise signals. calculate the optimum parameters of two freedoms damping dynamic vibration absorber with the method of optimum parameter designing
計算鋼軌不同部位、不同方向的振動信號和噪聲信號的相干系數,得出振動信號和噪聲信號相干曲線圖,確定鋼軌減振降噪的主要控制頻率。Fortunately, we can solve this problem by using ap ( alternating projection ) algorithm, by this way ; the computational load can reduce dramatically. doa estimation is mostly research base on linear array, because of the limitation of linear, it can estimate the azimuth only ; solid array can estimate the azimuth and elevation, in this paper, the solid array is used for doa estimation ; when the signal sources are uncorrelated, the music algorithm is chosen, using mdl / aic algorithm, we attain the signal number of sources
本文採用立體六元陣進行測向,在非相干信號源條件下,採用music演算法進行doa估計,採用基於信息論原理mdl準則或者aic準則判斷信號源數目,通過對陣列流形的研究,指出基於圓陣的陣列流形具有的某種對稱性,利用該對稱性來降低運算量,並且通過對演算法的研究,提出用維數較小的信號子空間或噪聲子空間來計算空間譜,進一步減小music演算法運算量。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。Experimental investigation of drag reduction mechanism over compliant wall and multi - scale coherent structure control in turbulent boundary layer
柔性壁面湍流減阻機理與多尺度相干結構控制的實驗研究In this paper, a linear interpolation method to detect the number of sources impinging on an array is proposed, of which aims to alleviate the effect of colored noise on its performance
摘要為了減輕加性色噪聲對信源數目估計性能的影響,本文提出了一種基於相干矩陣特徵值分佈曲線線性插值的信號檢測方法。In this paper, a simplified method of calculating wind - induced response and design loads of super - high - rise buildings was proposed. coherence properties of wind load on typical tall building were analyzed and the results show that cross - wind loads at different height have strong coherence at vertex shedding frequency, and the coherence function ' s value here is near to 1
首先分析了各測點層合力的相干特性,結果顯示各測點層所受順風向風荷載之間的相干函數基本成單調衰減規律,而橫風向脈動風荷載在漩渦脫落頻率處存在和順風向不同的顯著相關性。Because the signals of the target reflections are coherent, the reconstructing matrix algorithm which uses the time - shift correlation method is studied. not only has it the good ability to solve the coherence problem, but it also reduces the computation because of the time - shift correlation instead of the eigenvalue decomposition
由於雷達系統中目標回波具有相關性,必須考慮解相干處理,所以研究了利用時移相關去噪的矩陣重構演算法,該演算法具有較好的解相干能力,且用時移相關去噪免去了特徵分解去噪過程,可直接使用esprit演算法求解旋轉不變關系,簡化了過程,減小了計算量。However, on the other hand, quantum information processing and quantum computing need stable coherent superposed state, then decoherence is a difficulty of realizing them, it is, therefore, an important issue to find methods for slowing down decoherence in order to stabilize the coherent superpositions in the field of quantum study
然而,另一方面,量子信息與量子計算需要穩定的相干疊加態,而退相干是實現它們的障礙,因此,為了獲得穩定的相干疊加態,尋找減小退相干的方法成為量子研究領域的重要議題。Because the thickness is uniform in every crystal, the value of the difference of phases is only determined by the wavelength. specifically, the interference strengthens the magnitudes in some wavelengths, thus the color of that wavelength will be displayed ; on the contrart, in other wavelengths, the interference attenuates the magnitudes, thus the color of that wavelength will disappear
由於晶體為均勻厚度,該位相差僅由波長決定,對于某些波長,干涉加強,該波長對應的顏色凸顯;對于某些波長,干涉減弱,該顏色消失。分享友人