相干散射 的英文怎麼說
中文拼音 [xiānggānsǎnshè]
相干散射
英文
coherence scattering- 相 : 相Ⅰ名詞1 (相貌; 外貌) looks; appearance 2 (坐、立等的姿態) bearing; posture 3 [物理學] (相位...
- 干 : 干Ⅰ名詞1 (事物的主體或 重要部分) trunk; main part 2 (幹部的簡稱) short for cadre Ⅱ動詞1 (做...
- 散 : 散動詞1. (由聚集而分離) break up; disperse 2. (散布) distribute; disseminate; give out 3. (排除) dispel; let out
- 射 : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
- 相干 : 1 (多用於否定句或疑問句) have to do with; be concerned with 2 [物理學] coherent; 相干散射 coher...
- 散射 : [物理學] [電學] scattering; radio scattering; scatter; dispersion
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Polarimetric synthetic aperture radar ( sar ) interferometry, which combines sar polarimetry with sar interferometry, can improve the measurement precision of interferometric sar and enhance the ability to explain the scattering mechanisms of targets
極化sar干涉測量將干涉sar和極化sar測量技術相結合,能提高幹涉測量精度並能更好地解釋目標的散射機理,近幾年來已成為一種新興的前沿技術。Compared with current instruments, the setup can decrease disturbance of disorder radiation by using double layer refractive index sample matching vessel, and it can increase collecting and transmitting efficiency of radiation by adopting single mode fiber with gradient refractive index lens. with a low power laser, the sample has a low scathe, and the laser and the measurement system can be integrated conveniently
與現有的同類型儀器相比,該儀器採用雙層折射率樣品匹配池減少了雜散光的干擾;採用帶梯度折射率透鏡的單模光纖接收、傳輸散射光信號提高了散射光的收集傳輸效率;用低強度的激光避免了對樣品的輻射損傷,同時可以使激光器和系統集成在一起,整個系統小型實用。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。Coherently scattering region
相干散射區Then based on kirchhoff approximation theory, the formula of the coherent and incoherent scattering intensity of plane wave from two dimensional dielectric normally distributed rough surface are derived, and the scattering intensity of a planar, rough surface of unit area
然後從粗糙面散射kirchhoff標量近似理論出發,得到了平面波對高斯分佈的二維隨機粗糙面的相干散射和非相干散射強度表達式,並給出了單位面積粗糙面非相干散射的表達式。The scattering intensity of rough surface is computed, while the roughness, polarization, observation station and the refractive index are different, and the wavelength of incident light is 0. 48 m. the results indicates the rougher the rough surface is, the less the coherent scattering is ; the influence of the smaller refrective index is more than larger one by the polarization
計算了入射光波長為0 . 48 m時,不同粗糙度,偏振態,散射角以及不同折射率的粗糙面散射強度,結果表明,粗糙面越粗糙,相干散射越小,非相干散射越強;偏振態對折射率大的粗糙介質面影響較小,對折射率較小的介質面的影響較大。Based on the theories of non - diffracting imaging system in coherent light, the measurement system of point spread function ( psf ) of non - diffracting imaging system has been presented
摘要在分析相干光照明下無衍射成像系統理論的基礎上,設計了無衍射光成像系統的點擴散函數的測量系統。Incoherent scattering cross section
非相干散射截面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。The main contents include polarimetric interferometric phase coherence optimization ( pipco ) ; random volume over ground ( rvog ) coherence scattering model and corresponding inversion model ; optimization of inversion procedure using ga
主要內容包括:極化干涉相干最優理論,相干散射模型和反演模型以及基於遺傳演算法的參數反演過程。Secondly, vector coherence scattering models are studied. the study is focused on the rvog scattering model and corresponding inversion model. the influences upon coherence of all the parameters in the model are discussed
接下來,論文討論了矢量相干散射模型,重點研究了rvog相干散射模型和相應的參數反演模型,並分析了模型中各個參數對干涉相干性的影響。Gradually people began to make use of it actively to measure some physical quantities, thus self - mixing interference technology was brought forth. when a coherent light is scattered by the rough surface, the scatted light forms a granular intensity distribution known as speckle. speckles are coherent superposition of the light scatted by the rough surface
相干光從光學粗糙表面散射時,結果在探測面上出現隨機的顆粒狀的強度分佈,稱為散斑,散斑是由粗糙表面上各面元的散射光波之間的干涉在空間域內形成的,所以散斑也是粗糙表面一些信息的攜帶者。( 4 ) light - induced scattering in sbn : 61 : cr crystals under applied fields and its suppression are studied. a new method is proposed that the scattering light can be suppressed through erasure of scattering gratings by higher power pump beam ( coherent or incoherent )
( 4 )討論了sbn 61 cr晶體在外加直流電場作用下的光感應光散射現象及其消除方法,提出通過引入另外一束相對高強度的光束(相干或者非相干) ,利用其對散射光柵的擦除作用消除信號光束的散射。Different with the traditional ifog, light beams within mz - ifog transmit along the forward direction, which avoid the kerr effect noise and the interferometric noises brought by the backward scattering and reflecting light. mz - ifog also gains a high using efficiency of light source and a strong output signal. the principle of mz - ifog is analyzed
與傳統sagnac干涉式光纖陀螺不同,此光纖陀螺結構簡單,兩路光信號採用前向傳輸,避免了後向傳輸光對光源的影響,也避免了後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲,光功率利用率高,輸出光功率大。Making use of the wigner transform of the one - body density matrix, the coherent density fluctuation model ( cdfm ) is introduced into semiclassical distorted wave ( scdw ) model. the new model is applied to the analyses of multistep direct processes of ( p, p ' x ) reactions to continuum
本文利用單體密度矩陣的wigner變換,將相干密度漲落模型( cdfm )引入半經典扭曲波( scdw )模型,並將新的scdw模型應用於分析預平衡反應( p , p ' x )中散射到連續態的多步直接過程。In this paper a kind of interferometric optical fiber gyroscopes based on mach - zehnder interferometric principle is proposed. the signals of this novel optical fiber gyroscope transmit along the positive direction, which avoid the interferometric noise, causing by the negative - directional scattering light and reflecting light, and the kerr effect noise. in this novel optical fiber gyroscope the light power ' s utilization efficiency is high, the output signal is strong
本文提出一種基於mz干涉原理的干涉式光纖陀螺,該種光纖陀螺的光信號採用正向傳輸,避免了後向傳輸光對光源的影響,也避免後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲,光功率利用率高,輸出光信號大。Based on this, we bring forward a availability and viable distributed fiber sensing for temperature and strain system that based on spontaneous brillouin scattering, coherent self - heterodyne botdr, and done part experimental study
在此基礎上,提出了一種有效可行的基於布里淵散射的分散式光纖溫度/應變傳感系統? ?相干自外差的布里淵散射分散式光纖傳感系統,並完成了部分實驗研究。At the same time, it uses a frequency translator to obtain a frequency shift, which is equal to the brillouin frequency in fiber. then the detecting pulsed light and the cw reference light can coherent. this method greatly improved the system ’ s sensitive and signal to noise ratio ( snr )
同時在探測光路中引入一個光移頻環路,使探測光移頻后再經光纖中布里淵頻移,其後向布里淵散射光頻率與參考光束大致相當,可進行相干自外差探測,大大提高了系統的探測靈敏度以及系統的信噪比。The form of the psf has been deduced according to the fresnel diffraction, and it has been analyzed that the frings density of the psf depends on the axicon ' s refracting angle and the distance l between the point light source to lens l2
利用菲涅耳衍射理論,推導出相干光照明下無衍射系統的點擴散函數( psf )的形式,並分析出點擴散函數的條紋疏密與錐鏡的夾角和點光源的位置有關。The time - domain scattering is computed via fdtd method, which is particularly well adapted to frequency - dependent soil. this method is processed prior to a fast fourier transform ( fft ), which is performed to come back to the frequency domain
主要包括用於有耗土壤和樹干計算的頻率相關fdtd演算法- ( fd ) ~ 2td ,以及吸收土壤凋落波的gpml吸收邊界,確立了樹干散射的時域演算法模型。分享友人