scattering point造句
例句與造句
- The question then is how to draw the best line through the scattered points .
接下來的問題是如何通過散布的點子畫出最佳線。 - On the other hand an object seen in reflected light will surely display some phase correlation between its various scattering points .
反之，在反射光中看到的物體，它的各個散射點之間肯定將呈現(xiàn)某種位相相關(guān)性。 - In chapter 3 , the local structure of a scattered point set and its classical algorithms are investigated
第三章研究了散亂點集的鄰域結(jié)構(gòu)及其經(jīng)典算法。 - In chapter 4 , based . on the recognizability of 2d manifold , an algorithm is presented for topologic reconstruction from scattered points
第四章提出一種基于二維流形可辨性的散亂數(shù)據(jù)曲面拓?fù)渲亟ㄋ惴ā? - The main 2 sorts of compensation algorithm are base on scatter points tracking and motion parameters estimation , respectively
Isar成像的運動補(bǔ)償算法主要分兩類:基于特顯點跟蹤的補(bǔ)償算法和基于目標(biāo)運動參數(shù)估計的補(bǔ)償算法。 - It's difficult to find scattering point in a sentence. 用scattering point造句挺難的
- The technique of surface reconstruction from scattered points , for its universality , is very important both theoretically and practically
作為最具普遍性的曲面重建問題，散亂點集曲面重建無論在理論上還是在實用上都有重要意義。 - The theory of fitting scattered point to b spline and b zier surfaces is introduced and a fitting method based on four boundary and point set is also discussed . moreover , a
研究和討論了曲面光順程度的分析方法,如等曲率線法、反射線法、高亮度線法和等照度線法等。 - In the pim , the problem domain is represented by properly scattered points . the displacement at a point is interpolated by the displacements in the influence domain of this point
在該方法中，問題域上離散一系列隨機(jī)分布的節(jié)點，一點的位移值由該點影響域內(nèi)的節(jié)點插值得到。 - After analyzing the different requirement of points reduction , the nurbs surface reduction and the quad - tree structure - based method of scattered points are presented . the specific algorithms of each are given
研究了數(shù)據(jù)分塊技術(shù)，結(jié)合特征提取的過程和算法，提出了基于特征框架的數(shù)據(jù)分塊方法。 - Using local base surface parameterization , a parametric quadric surface approximation method is used to estimate the local surface curvature properties of scattered points based on propagating normal vector direction
首先，計算各點的鄰近點集，選取合適的局部基礎(chǔ)曲面，把鄰近點集投影到相應(yīng)的局部基礎(chǔ)曲面。 - 3d terrain surface modeling is to build the irregular 3d model from a large number of scattered points and lines . the object and procedure of it confine that it must use geometric and irregular triangle technique
三維地形建模要從大量離散的點、線重構(gòu)由不規(guī)則三維體集合而成的地表模型，這一過程和目標(biāo)決定了它必須采用基于曲面和不規(guī)則三角形的造型和可視化技術(shù)。 - This thesis seeks to validate an effective approach to the method of the triangulation form 3d scattered points . a low computational complexity and high mesh quality algorithm has great application merit in the research of computational geometry , surface reconstruction and visualization of 3d data
低計算復(fù)雜度和高網(wǎng)格質(zhì)量的三角剖分算法在計算幾何、曲面重構(gòu)及三維數(shù)據(jù)場可視化等研究領(lǐng)域中有著重大的應(yīng)用價值。 - The method is easy to use and fast calculation . 7 ) the aas ( average - approximation subdivision ) scheme had risen in this thesis . this scheme solved the problem of constructing three - dimension surface of distributing load continuously and smoothly from scattered point load
4 )本文首次提出了均值逼近細(xì)分( average - approximationsubdivision ，簡稱aas )算法，解決了由散亂的節(jié)點載荷確定連續(xù)的、有一定光滑度的三維分布載荷的問題。 - 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(lán)綠激光在海水傳輸過程中的散射現(xiàn)象以及散射中的退偏度變化與海水深度的關(guān)系,發(fā)現(xiàn)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。最后通過光學(xué)工程軟件( lighttools )對海水中的散射進(jìn)行仿真實驗,研究散射與海水中粒子密度、粒子大小和相對折射率的關(guān)系。實驗結(jié)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(qiáng)度將顯著增加。 - In practice , it ’ s very hard to find any ideal scatter points to track , so this thesis focuses on the motion compensation algorithm base on motion parameters estimation , which is used in r - d fft imaging algorithm and verified by simulation . work of this thesis contains : first analyze the signal - processing model of isar system in detail , and establish a 3 - dimensional mathematical scattering model of moving target . then some improvements are made on existing compensation algorithm , to get a higher image quality and reduce compute burden
本論文有以下幾點創(chuàng)新: 1 .在距離向的補(bǔ)償(包絡(luò)對齊)方面,采用基準(zhǔn)相關(guān)法代替相鄰相關(guān)法或積累相關(guān)法,一定程度上解決了可能出現(xiàn)的包絡(luò)漂移和包絡(luò)突跳現(xiàn)象;根據(jù)目標(biāo)運動軌跡特點,采用二次曲線擬合的方法,將包絡(luò)對齊時的局部誤差轉(zhuǎn)化為全局的誤差,以便實現(xiàn)較優(yōu)的整體對齊效果。
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