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首页> 外文期刊>Applied optics >MULTIPLE SCATTERING FROM CLEAR ATMOSPHERE OBSCURED BY TRANSPARENT CRYSTAL CLOUDS IN SATELLITE-BORNE LIDAR SENSING
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MULTIPLE SCATTERING FROM CLEAR ATMOSPHERE OBSCURED BY TRANSPARENT CRYSTAL CLOUDS IN SATELLITE-BORNE LIDAR SENSING

机译：卫星型激光雷达中透明水晶云团掩盖的清晰大气的多次散射

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摘要

The contribution of multiple scattering to a spaceborne lidar return from clear molecular atmosphere obscured by transparent upper-level crystal clouds is assessed by the use of the variance-reduction Monte Carlo technique. High anisotropy of scattering in the forward direction by polydispersions of ice crystals is the basis of a significant effect of multiple scattering for small values of the lidar receiver field of view. Because of scattering by large nonspherical crystal particles, the lidar signal backscattered from the molecular atmosphere under the cloud increases significantly compared with the single-scattering return. The ratio of the multiple-to-single-scattering contributions from the clear atmosphere hidden by the clouds is greater than from the crystal clouds themselves, and it is proportional to the values of cloud optical thickness. (C) 1996 Optical Society of America [References: 10]
机译：使用减少方差蒙特卡罗技术评估了透明散射的高层晶体云所遮蔽的，从清晰的分子大气中多次散射对星载激光雷达返回的散射的贡献。冰晶体多分散在向前方向上的高散射各向异性是激光雷达接收器视场值较小时多次散射的显着效果的基础。由于大的非球形晶体粒子的散射，与单散射回波相比，从云层下的分子大气反向散射的激光雷达信号显着增加。云层隐藏的晴朗大气中的多次散射贡献与单次散射贡献的比率大于晶体云本身的比率，并且与云光学厚度的值成正比。 （C）1996年美国眼镜学会[参考文献：10]

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