# t矩阵 的英文

• t matrix
###### 例句与用法
• For a single sphere , t matrix method is compared with mie theory in both equation expression and numerical results
首先从理论公式及数值计算两方面分别对单个球形粒子的t矩阵与经典的mie理论进行了比较，讨论了其各自的适用范围。
• In chapter 4 windowed function of data signal processing is introduced and applied to addition theorem , which succeeds in solving the difficult problem : it has a bad result when recursive t - matrix is applied to calculate the wave scattering of electrically large objects and multiple objects in the excitation of te wave
在第四章中引入数字信号处理中的窗函数，成功解决了在入射波为te波时，用递推t矩阵法计算电大尺寸物体或多个散射体时，精度不高的问题。
• In the paper , the new electromagnetic scattering algorithms have been introduced - recursive aggregate t - matrix algorithm ( ratma ) and fast multipole algorithm ( fma ) . two kinds of methods are precise and efficient and have advantages over conventional method of moment in computational speed and requirement for storage space
本文研究了基于积分方程的电磁散射计算方法，主要研究了两种算法：递推t矩阵法和快速多极子法，这两种算法都有计算量小、所需内存少和精度高的优点。
• Thirdly , the cluster - cluster aggregation model is used to study the possible structure of aggregated smokescreen particle . we also develop the mathematical radiation extinction model of aggregated particle based on t - matrix method . associated with monte carlo method , another computer program is designed to simulate the extinction cross section and scattering cross section of actually aggregated particle
本文还将“凝聚体?凝聚体”凝聚模型应用于烟幕凝聚现象研究，模拟出了烟幕凝聚粒子的可能结构，并且根据t矩阵方法发展了凝聚粒子消光特性的计算方法，结合montecarlo方法，编写了能够模拟实际烟幕凝聚粒子消光截面、散射截面的计算程序。
• In the first part , the basic knowledge of particle scattering in meteorology and physics was introduced . the particles to be discussed include aerosol particles , fog droplets and raindrops and the em wave band in the discussion is near - infrared . in the second part , the mie theory was briefly reviewed and was applied to investigate the scattering characteristics of spherical atmospheric particles , the result shows that in the visibility measurement meter using forward - scattering method , when the working wavelegth is between 0 . 8 m ~ 2 m , the scattering angle is between 25 ~ 40 , the distinguishability and the relative scattering intensity would be better than those under other conditions . in the third part , the superellipsoid was used to describe a wide range of shapes such as spheres . ellipsoids and cylinders . an improved t - matrix method which can be used to calculate arbitry shaped particle ' s scattering field was introduced , and the scattering characteristics of non - spherical atmospheric particles was investigated with this method
计算结果表明，从相对散射强度、同一方向上不同粒子散射的可区分程度来看，在散射式能见度探测仪器中，工作波长介于0 . 86 m 2 m ，探测角度选取前向25度40度时，探测的结果将会是比较理想的。第三部分中，使用超椭球方程来统一描述各种非球形粒子的形状，然后使用t矩阵方法计算了一些形状的非球形粒子的近红外散射特性。另外，在本文中还针对球形粒子的散射场提供了一种三维可视化方法，使对散射场强度的空间分布的理解更加简单，直观。
• Another mode of the total t matrix is derivated from the integral equation . finally the calculation result of two dielectric cylinders pro ves the effectiveness of windowed function and the correctness of the expression of the total t - matrix . windowed function is also applied into fma , which can accelerate the computation speed of the fma
另外还从积分方程出发，推出了递推了矩阵法的总体t矩阵的另一种表达形式，最后计算了两个不同介质圆柱体的散射场，证明了引入窗函数的有效性、推出的总体了矩阵表达式的正确性。
• The ratma can calculate the electromagnetic scattering of multiple cylinders , and can be used in remote sensing . in chapter 2 simply derivation of the ratma is given by the addition theorem , and the general t matrix of single cylinder is deduced . the worked out examples show th e effectiveness of the ratma in the analysis of the scattering field of single cylinder or multiple cylinders
由于递推t矩阵法不仅可以计算多个柱体或不同形状柱体的散射，而且可计算遥感上三维物体的散射，在第二章中，利用加法定理，简要地推导了递推t矩阵法，并用解析法推出了单个圆柱体在各种情况下的t矩阵(此t矩阵对导体和介质圆柱体的散射场计算都适用) ，最后计算了单个导体圆柱和两个不同大小介质圆柱体的散射场。
• Secondly , the mathematical radiation extinction model of nonspherical particle is developed based on t - matrix method , and a computer program is designed to calculate the extinction cross section , scattering cross section , absorption cross section and scattering phase function of fixed or randomly oriented axially symmetric particle
然后根据t矩阵方法，采用回转体微粒消光特性的计算模型编制出的相应程序，对固定取向和随机取向的非球形回转体微粒的消光截面、散射截面、吸收截面及散射相函数进行了计算。

###### 相关词汇
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