Josset Damien, Zhai Peng-Wang, Hu Yongxiang, Pelon Jacques, Lucker Patricia L
NASA Postdoctoral Program Fellow, NASA Langley Research Center, Hampton, VA, USA.
Opt Express. 2010 Sep 27;18(20):20862-75. doi: 10.1364/OE.18.020862.
The lidar equation for ocean at optical wavelengths including subsurface signals is revisited using the recent work of the radiative transfer and ocean color community for passive measurements. The previous form of the specular and subsurface echo term are corrected from their heritage, which originated from passive remote sensing of whitecaps, and is improved for more accurate use in future lidar research. A corrected expression for specular and subsurface lidar return is presented. The previous formalism does not correctly address angular dependency of specular lidar return and overestimates the subsurface term by a factor ranging from 89% to 194% for a nadir pointing lidar. Suggestions for future improvements to the lidar equation are also presented.
利用辐射传输和海洋颜色领域近期关于被动测量的研究成果，重新审视了包含次表面信号的光学波长海洋激光雷达方程。镜面反射和次表面回波项的先前形式根据其起源进行了修正，其起源于白帽的被动遥感，并在未来激光雷达研究中进行了改进，以实现更准确的应用。给出了镜面反射和次表面激光雷达回波的修正表达式。先前的形式没有正确处理镜面激光雷达回波的角度依赖性，对于天底指向的激光雷达，次表面项高估了89%至194%。还提出了未来改进激光雷达方程的建议。
