| 无规取向、无吸收非球形粒子光散射的T-矩阵方法 |
| |
| 引用本文： | 丁继烈,许丽生.无规取向、无吸收非球形粒子光散射的T-矩阵方法[J].成都信息工程学院学报,2001,16(3):159-168. |
| |
| 作者姓名： | 丁继烈 许丽生 |
| |
| 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. 成都信息工程学院大气辐射与卫星遥感实验室;四川神舟信息工程研究院 |
| |
| 摘 要： | 较详细地研究了无规取向、无吸收椭球体粒子的T－矩阵收敛问题。首先，简要概括了nmax的3种收敛方案和它们的基本特性。然后，应用1993年提出的数学收敛方法（M－方法）和1998年提出和物理收敛方法（P－方法）研究收敛问题。结果表明椭球粒子收敛精度对粒子的尺度参数，纵横比以及椭球体的种类（例如，长／扁椭球）有很强的依赖性。当粒子的尺度参数不太大时，甚至在极端纵横比的条件下，P－收敛方案优于M－收敛方案。
|
| 关 键 词： | T－矩阵方法 无吸收椭球粒子 数学收敛方法 物理收敛方法 光散射 |
| 文章编号： | 1671-1742(2001)03-0159-10 |
| 修稿时间： | 2001年1月16日 |
Convergence of the T-matrix approach for randomly oriented,nonabsorbing, nonspherical particles,Part II: Spheroids |
| |
| DING Ji-lie,XU Li-sheng.Convergence of the T-matrix approach for randomly oriented,nonabsorbing, nonspherical particles,Part II: Spheroids[J].Journal of Chengdu University of Information Technology,2001,16(3):159-168. |
| |
| Authors: | DING Ji-lie XU Li-sheng |
| |
| Institution: | DING Ji-lie1,XU Li-sheng2 |
| |
| Abstract: | The convergence problems of the T-matrix approach for randomly oriented, nonabsorbing spheroids are studied in some details. Three convergence schemes over nmax and their basic characteristics are outlined briefly. Both the mathematical convergence procedure (the M--procedure)developed by Mishchenko in 1993 and our physical procedure (the P-procedure) proposed in 1998 are used to investigate the convergence problems. The results show that the convergence accuracy for spheroids depends strongly on the particle size parameter, the aspect ratio, and what kind of spheroids (i.e., prolate or oblate).When the particle size parameter is not too large, even in the extreme of the aspect ratio, the P-procedure provides better convergence accuracy than the M-procedure. |
| |
| Keywords: | T-matrix approach nonabsorbing spheroids mathematical convergence procedure physical procedure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
