Experimental determination of the laser radiation extinction coefficient for inhomogeneous sea water in the subsurface layer from airborne polarization lidar signals
V.S. Shamanaev, A.A. Lisenko
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: airborne polarization lidar, laser radiation extinction index, Monte Karlo method
Abstract
Results of experimental determination of the laser radiation extinction index by the gradient method from the depth profiles of the airborne polarization lidar return signal power for clear and coastal sea water in the subsurface layer are presented. Based on synchronous measurements of the polarized and depolarized signal components with the “Makrel” lidar operating at a wavelength of 532 nm, laser radiation extinction coefficients were estimated. It has been experimentally demonstrated that the polarized and depolarized lidar return signal components have different seawater extinction indices, and the difference can reach several ten percent. The depth profiles of the laser radiation extinction indices retrieved from these signal components for two series of lidar measurements are given. Such an integrated approach expands the possibilities of remote hydrooptical sensing.
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