激光技术, 2009, 33 (2): 217, 网络出版: 2010-02-28
改进算法研究1064nm激光大气Mie散射特性
Investigation of 1064nm laser scattering characteristic in atmosphere by means of improved Mie algorithm
散射 Mie散射 激光大气通信 气溶胶 散射分布 scattering Mie scattering laser atmosphere communication aerosol scattering distribution
摘要
为了研究1064nm激光大气气溶胶粒子的散射特性,利用Mie散射累积相乘算法,对函数迭代式进行简化,减少存储数组,对无穷迭代进行有效截断,减少迭代次数。通过模拟得到单分系和多分系的散射分布特征,得出散射强度主要集中在前向小角度散射的结论,并讨论了散射光的偏振特性,得出散射光存在完全偏振光的结论。结果表明,改进算法具有收敛速度快、精度高的优点。
Abstract
To study the scattering characteristic of 1064nm laser in low latitude,improved Mie scattering algorithm was put forward,in which the iterative function was simplified to reduce the storage array, and the endless circulation was truncated to reduce the number of circulation.From the simulation,the distribution of single and bulk scattering was obtained and it was found that the scattering distribution was focused in forward scattering at a small angle,and that the scattered laser might be absolute polarized light.The results show that the new method embodies the advantage of fast convergence and high precision.
肖永亮, 赵晓军, 周昕, 刘强, 伍波, 杨泽后, 周鼎富. 改进算法研究1064nm激光大气Mie散射特性[J]. 激光技术, 2009, 33(2): 217. XIAO Yong-liang, ZHAO Xiao-jun, ZHOU xin, LIU Qiang, WU Bo, YANG Ze-hou, ZHOU Ding-fu. Investigation of 1064nm laser scattering characteristic in atmosphere by means of improved Mie algorithm[J]. Laser Technology, 2009, 33(2): 217.