| 等效球理论计算冰晶粒子毫米波散射的误差分析 |
| |
| 引用本文： | 王金虎,葛俊祥,魏鸣,刘俊,祝潇.等效球理论计算冰晶粒子毫米波散射的误差分析[J].河南师范大学学报(自然科学版),2014(5):40-44. |
| |
| 作者姓名： | 王金虎 葛俊祥 魏鸣 刘俊 祝潇 |
| |
| 作者单位： | 南京信息工程大学江苏省气象探测与信息处理重点实验室;南京信息工程大学中国气象局气溶胶-云-降水重点开放实验室; |
| |
| 基金项目： | 2011年国家科技部公益性(气象)行业专项毫米波云雷达关键技术研究(GYHY201206038);国家自然科学基金(61372066);江苏省2012年度普通高校研究生科研创新计划(CXLX12_0500) |
| |
| 摘 要： | 利用4种等效Lorenz-Mie理论以及离散偶极子近似理论(DDA)计算了毫米波频率下卷云中随机取向六角形冰晶粒子的散射特性.对比结果表明:在毫米波频率下,利用等效体积与投影面积比值(V/A)Lorenz-Mie理论计算的结果与DDA的结果最接近,最后利用最小二乘法拟合出误差公式,为等效球理论代替DDA计算复杂的六角形冰晶粒子散射特性提供参考依据.
|
| 关 键 词： | Lorenz-Mie 离散偶极子近似 94GHz 六角形冰晶粒子 |
Error Analysis of Equivalent Sphere Theory for Calculating the Scattering Properties of Ice Crystals at Millimeter Wavelength |
| |
| WANG Jinhu;GE Junxiang;WEI Ming;LIU Jun;ZHU Xiao.Error Analysis of Equivalent Sphere Theory for Calculating the Scattering Properties of Ice Crystals at Millimeter Wavelength[J].Journal of Henan Normal University(Natural Science),2014(5):40-44. |
| |
| Authors: | WANG Jinhu;GE Junxiang;WEI Ming;LIU Jun;ZHU Xiao |
| |
| Institution: | WANG Jinhu;GE Junxiang;WEI Ming;LIU Jun;ZHU Xiao;Jiangsu Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science and Technology;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science and Technology; |
| |
| Abstract: | The scattering properties of randomly oriented hexagonal ice crystals was studied by four equivalent LorenzMie theory and the discrete dipole approximation method(DDA)at 94 GHz.The results show that the equivalent V/A is most accurate compared with DDA results.The fitted relationships between equivalent V/A and DDA are gained by polynomial least squares methods,the relationships provide a basis for substituting equivalent Lorenz-Mie theory for DDA theory when we compute the scattering properties of cirrus ice particles. |
| |
| Keywords: | Lorenz-Mie discrete dipole approximation 94GHz hexagonal ice crystals |
| 本文献已被 CNKI 等数据库收录！ |
