散射

The inversion of particle size distribution from measured data of light scattering, as a typical inverse problem, has been studied by many reseachers and solved by several numerical methods. Among which, direct Tikhonov regularization method with Morozov discrepancy principle, is often used to overcome the ill-posedness linked with the Fredholm integral equation of the first kind, so the stability of inversion has been heightened. But there has much room for improvement of the inversion accuaracy, especially for the double-peak problems.

由测量得到的散射光强数据来反演颗粒粒径分布是一个典型的反问题，它已为许多的学者所研究，并用多种数值方法来求解，其中带Morozov偏差原理的直接Tikhonov正则化方法经常被采用，以便用来克服与上述反演相联系的第一类Fredholm积分方程的不适定性带来的困难，因而反演的精度得到了提高；然而仍有许多改进的余地，特别是对于所谓"双峰"问题更是如此。

The doppler frequency is a function of the two scattering directions.

多普勒频率是两个散射方向的函数。

Computing complex argument Fresnel integral is a difficult problem meeting in electromagnetic scattering of lossy dielectric wedges.

摘要复宗量菲涅耳积分的计算，是有耗介质劈电磁散射中遇到的一个难题。

Through reasonable setup and Fresnel diffraction integral, the theory of aberration correction by LSBS was proved.The aberration of wavefront was introduced by Zernike polynomial.

文中讨论了自发布里渊散射提供噪声源的LSBS发生器特性，并将此模型与目前广泛使用的分布式噪声源LSBS发生器模型进行了对比，分析了二者的优劣及适用情况。

Chapter 4 The Computation of Complex Argument Fresnel Integral and Complex Ar gument Transition Function and Their Properties The computation of complex argument Fresnel integral and complex argument transition function is a difficult problem meeted in electromagnetic scattering of lossy dielectric wedges.

第四章 复宗量Fresnel积分和复宗量过渡函数的计算及其性质复宗量菲涅耳积分的计算和复宗量过渡函数的计算是有耗介质劈电磁散射中遇到的一个难题，目前无表可查，对其性质也知之不详。

Absorption maximum move red and particles size enlarge when heating time increased.In order to test whether these nano_silver colloids can be using SERS research,the cationic molecular fuchsine basic,Methylene blue,anionic molecular Benzoic acid,neutral molecular Alcidine orange and Sudan red are used.

为测试该纳米银溶胶是否具有表面增强喇曼散射活性，选用了阳离子型分子碱性品红、亚甲基蓝，阴离子型分子苯甲酸，中性分子丫啶橙、苏丹红作为其SERS活性的测试分子，进行SERS研究。

Geometrical Theory of Diffraction is a fundamental algorithm in electromagnetic radiating and scattering, and programming is a key step for its application.

几何绕射理论是电磁辐射与散射计算领域中广泛应用的一种算法，而编程是其实施的一个关键。

In this thesis, we employ the spectral Galerkin method to analyze the scattering phenomena of the FSS.

在本文中，我们采用频率域的Galerkin方法来分析有关频率选择表面散射场的问题。

The gamma radiation reaching a target as a result of scattering in the air is called "skyshine".

辐射由于空气的散射而达到某一目标的过程叫做"天空照射"。

The theory of range gating is described and the key techniques for range gating are analyzed in this paper.

距离选通技术是克服大气后向散射，提高主动成像系统信噪比的有效方法。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。