摘要
运用米氏散射理论,分析了单个粒子散射特性,建立了1.06μm激光近地面大气传输散射模型.通过该模型的仿真计算,得到了不同离轴距离条件下,探测方向与散射照度的变化关系曲线;不同气象能见度条件下,散射照度随离轴距离的变化曲线.散射照度不仅与气象能见度有关,而且与激光传输距离也有很大关系.使用实测数据对模型进行了校验,结果表明,实测数据与模型计算数据能够较好地吻合.
According to Mie scattering theory, the single particle scattering characteristics are analyzed and an atmospheric scattering model of 1.06μm laser is built. Through simulation calculation using the model, the detection direction vs scattering intensity curves in different abaxial distance and the scattering intensity vs abax- ial distance curves in various visibilities are obtained. Scattering intensity is not only influenced by meteorological visibility but also by propagation distance. The model is verified with practical tested data, the results show that the tested data accords with the simulated data approximately.
出处
《光电技术应用》
2009年第2期6-9,17,共5页
Electro-Optic Technology Application
关键词
米氏散射
大气传输
气溶胶谱分布
能见度
Mie scattering
atmosphere propagation
aerosol size distribution
visibility
