【摘要】 通过实验测出532 nm激光在近地大气的角散射系数,对Junge和Deirmendjian两种模型的气溶胶 系统在不同的系统参数、不同的折射率的情况下的散射相函数进行了计算,发现与实验所测得的曲线有明显的 差异,这两种模型都不存在散射次极峰。通过对不同半径粒子的散射相函数的计算,说明实验所测的气溶胶系 统在粒子尺寸较大的区间的密度要比Junge和Deirmendjian两种模型的密度要大得多,在假定大粒子服从正 态分布的前提下,拟合出了气溶胶的分布函数。更多还原

【Abstract】 We measured the angle scattering coefficient of near ground atmosphere to 532nm laser by experiment. The angle scattering coefficient of aerosol were calculated using both the Junge or Deirmendjian distribution. The calculated curve is observably different to measured curve at the second peak. It means the density of large aerosol is bigger than Junge & Deirmendjian mode.更多还原