| 关于非球形粒子光散射的T-矩阵数值计算方法的研究 |
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| 引用本文： | 丁继烈,许丽生,张强.关于非球形粒子光散射的T-矩阵数值计算方法的研究[J].成都信息工程学院学报,2001,16(1):1-7. |
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| 作者姓名： | 丁继烈 许丽生 张强 |
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| 作者单位： | 1. 成都信息工程学院大气辐射与卫星遥感实验室,
2. 四川神舟信息工程研究所,成都信息工程学院大气辐射与卫星遥感实验室, |
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| 摘 要： | 首先介绍了无规取向轴对称非球形粒子光散射的T－矩阵数值方法。然后，进一步研究了T－矩阵计算的收敛问题，提出了一种新的关于无规取向无吸收非线形散射物体的物理收敛方法，我们研究了椭球粒子的收敛问题，结果表明我们的数值方法和T－矩阵计算程序是有效的， 收敛精度与粒子的尺度和形状有很强的依赖性，在一定的条件下，我们的物理收敛速度优于NASA Mishchenko的数学收敛速序。
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| 关 键 词： | 非球形粒子 光散射 T－矩阵方法 数值计算 收敛精度 |
| 文章编号： | 1001-5418(2001)01-0001-07 |
| 修稿时间： | 2000年10月17 |
Some Studies on Numerical Calculations of T-Matrix Approach for Light Scattering by Nonspherical Particles |
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| DING Ji-lie.Some Studies on Numerical Calculations of T-Matrix Approach for Light Scattering by Nonspherical Particles[J].Journal of Chengdu University of Information Technology,2001,16(1):1-7. |
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| Authors: | DING Ji-lie |
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| Abstract: | A numerical method for the T matrix approach of light scattering by randomly oriented and axially symmetric nonspherical particles performed in PC machine is presented first. Then, the convergence problem of T matrix computations is further studied. A new, physical convergence procedure specifically intended for randomly oriented, nonabsorbing, nonspherical scatterers is proposed. In the present study the convergent problems for the spheroids are investigated. The results show that our numerical method and the computer codes for the T matrix approach are efficient. The convergence accuracy depends strongly on the particle size and shape. Under some conditions our physical convergence procedure is superior to the mathematical convergence procedure developed by NASA Mishchenko in 1993. |
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| Keywords: | nonspherical particles light scattering T matrix approach numerical computations convergence |
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