point scattering 中文意思是什麼

point scattering 解釋
點散射
  • point : n 1 尖頭，尖端；尖頭器具；〈美國〉筆尖；接種針，雕刻針，編織針；小岬，小地角；【拳擊】下巴。2 【...
  • scattering : adj. 1. 分散在不同方向的，分散在不同范圍的。2. 廣泛擴散的。3. （選票）數量分散的，不集中的。n. 1. 散亂。2. 在媒介質中的散播。3. 【物理學】散射。adv. -ly
  1. This dissertation is focus on the temperature sensitive mechanism of the brillouin - scattering signal and on the basis of domestic techniques, the methods and approaches of signal detection and processing in distributed brillouin fiber - optical sensor system. a digital multi - point average method ( digital boxcar ) has been proposed based on the characteristics and the sorts of fiber - optical sensors and by analysis the feature of the brillouin - scattering signal, and also comparisons of all sorts of weak - signal detection theory

    論文在全面了解光纖傳感器的分類和特點及分散式光纖傳感器的原理和發展歷程的基礎上，通過分析被檢測的光纖布里淵後向散射信號的特點，研究和比較了微弱信號檢測的各種方法，最終選定了多點數字信號平均（數字boxcar ）的處理方案。
  2. Design the scanning movement control unit of compton back - scattering imaging scanner, mainly point out the control targets clearly, describe the control principle, etc. discuss the features and technical indexes of this unit

    明確指出了該子系統的控制對象，闡述了控制的原理，根據工作要求確定電機及驅動模塊的型號。論述了該系統的性能特點與技術指標。
  3. Design the software of compton back - scattering imaging scanner, point out the functions of this software. give out the program modules in which the directory and contents of this software is included. give out the interfaces of the main program modules and describe the meanings of operating elements on these program interfaces briefly

    指明了本應用軟體的功能，主要是控制三維掃描運動和源的工作位置、數據採集和處理以及文件管理和幫助等;給出了程序結構模塊，從中列出了軟體所含的主要目錄;給出了幾個主要的程序模塊的界面，簡要說明了界面中各操作對象的含義。
  4. On the basis of increasing the flaw resolution of the x - ray radiographic system, the study is firstly concerned with the analysis made on the influence of such factors as redial sources energy, system noise, optics radiography and scattering on the radiographic system in theory, and the present dissertation looks at the methods for acquiring the radiographic system point sp read function, line spread function and module transfer function ( mtf ). on the basis of these studies, research the spread properties of the tiny flaw making use of mtf, acquiring the properties of system inspecting sensitivity and resolution, based on the system optimization designing

    本文以提高射線成像系統的疵病解析度為前提，首先在理論上對射線源能量、系統噪聲、光學成像、散射等各環節對成像系統的影響進行分析，探討成像系統的點擴展函數、線擴展函數及其調制傳遞函數（ moduletransferfunction ，簡稱mtf ）獲取方法，在此基礎上，利用mtf研究微小疵病的擴展特點，從而得到系統的檢測靈敏度和解析度給出關系特性，為系統優化設計提供依據。
  5. A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water

    本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。
  6. On the other hand, in image domain, spatially varying point - spread function ( svpsf ) is defined to demonstrate how the effects of complex scattering centers which cause scattering model mismatch can be interpreted as being due to a svpsf acting on a ideal scatterer

    同時在圖像域引入二維空變點展布函數（ svpdf ）來解析表達非點散射機制對理想「點」的展布作用。
  7. In high energy nucleus - nucleus collisons, cc pairs are produced through short - distance scattering process among partons. after the point - like cc pairs form, they can be dissociated by partonic and final hadronic matter. not only mesons but also baryons in final haronic matter contribute to the dissociation of cc

    在高能核一核相互作用中，由於部分子間的短程散射過程誘導產生cc對，這些類點cc對形成后，離解的原因有來自於部分子的作用，也有來自於末態強子物質的誘導。
  8. The object of single photon emission computed tomography ( spect ) is to reconstruct an unknown radioactivity distribution inside the body from projection data consisting of the number of photon collected on a collimated gamma camera. these projections are not simple line integrals but have point - spreads due to the imperfect collimator of the detector and attenuation due to the compton scattering. so

    這種投影數據與透射ct中的數據不同，由於存在著光子的點擴散（由準直器引起）和衰減（由散射引起） ，已經不能用簡單的線積分來描述這個問題，因此相對于透射ct而言，這個領域將面臨很多困難。
  9. According to scattering phenomenology, we point out that the commonly used point scattering models fails to accurately describe the complex scattering behavior of real target. for that reason, based on the theory of effective scattering centers, researches are taken on more accurately physical - relevant description of target scattering and on approach that is more effective to characterizing and extracting target scattering features by means of time - frequency analysis and scattering centers modeling

    全文以此為線索，以光學區散射中心理論為基礎，分別從目標二維像的散焦效應、二維像的時頻分析、以及二維散射中心的模型化這三個角度，探討對目標復雜散射特性進行更為合理的描述和分析，並提取可用於識別的目標結構特徵。
  10. The main idea of this research can be summed up as following words, reflecting light or scattering light upon the surface of measured object formats an image on the photo surface of psd by a optical system, because of the good relationship between the offset of image point in psd and the offset of object thickness, a mathematical model can be founded according to this relationship. it can measure the shift of object thickness through these analyses of movement of image point position in psd, and this device can be tested its reliability with many practical specimens

    光學式非接觸厚度-微位移測量儀是在激光三角測量法的基礎上實現的，在本研究方案中，根據象點在psd上的移動量建立與被測物厚度-微位移變化之間的數學模型，通過對象點位置變化的計算，實現被測物厚度-微位移變化量的測量。本文重點闡述了光學式非接觸厚度-微位移測量儀的工作原理，並對測量儀的工作過程進行了分析；對影響測量精度的因素做了討論。
  11. Then, a conceptual framework of applying jtf processing engine agr to radar target image is formed, which illustrates the ways to automatically extract physics - based features of both point scatterers and nonpoint - scattering mechanisms from the target image, and to clean isar image by removing the nonpoint - scattering artifacts

    建立了對目標isar圖像進行agr處理的系統框架，為利用agr這一時頻分析手段從isar圖像中解構出不同類型的散射中心的特性，提供了系統的理論依據和具體的實現方式。
  12. Application of uniform design to estimate autocontrol end - point scattering accuracy and hitting accuracy of anti - ship missile

    反艦導彈自控終點散布和命中精度估算中均勻設計的應用
  13. We compare the b - spline curve interpolation and b - spline surface interpolation, analyze the fault of the b - spline curve interpolation and point out that we should use b - spline surface interpolation instead of b - spline curve to keep the continuity of the data result. also, we introduce the way to get control point from value point. then we propose the multi - step fitting of the dense and scattered data to construct b - spline surface, this algorithm perfectly resolve the obstacle of denseness and scattering of the contour line data

    第三章介紹了b樣條插值原理，論述了用b樣條曲面代替b樣條曲線對等高線進行插值，解決了線插值的不連續問題；並在b樣條曲面中運用了密集散亂數據點多步擬合演算法，解決了對等高線進行b樣條曲面插值中數據點散亂冗餘的問題。
  14. In this paper, an intensive study of the cruces technical of the multistatic sonar have been made from the point of multistatic geometry. the bistatic sonar localization and sound scattering of underwater target have been thoroughly studied. the bistatic scattering experiments have been carried through in tank

    本文依據多基地聲吶的工作特點，對多基地聲吶應用中的關鍵技術進行了研究，給出了有關多基地聲吶定位和多基地目標聲散射特性的研究方法；並通過模擬，對各種方法進行了性能評估和比較；最後通過水池實驗，給出了多基地聲吶目標特性研究的實驗結果。
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