使用Mie散射激光雷达在阴、雾和晴三种天气状况下采集了大气回波信号,从所测数据反演气溶胶消光系数的过程中发现,气溶胶后向散射消光对数比对反演结果存在较大影响.在阴天天气下,当后向散射消光对数比从0.7变化到1.0时,气溶胶消光系数反演结果相差近5倍;对晴天天气,反演结果相差近3倍;而在有雾天气,其反演结果变化不大.通过参考大气能见度因子对消光系数进行修正,并从而获得对应的后向散射消光对数比,给出了一种根据天气状况确定气溶胶后向散射消光对数比的新方法.实际反演计算表明,用此方法可获得与实际更为接近的气溶胶消光系数.
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