Design of space-borne atmospheric detection lidar based on dual-wavelength polarization detection

To obtain atmospheric profile of the whole world, and solve the problem that environment monitor was always restricted to a certain area, a space-borne atmospheric detection lidar was designed. This lidar working on satellite uses a 532nm and 1064nm dual-wavelength laser combined with polarization detection method to obtain profile, particle size, particle shape of aerosol and cloud, and can research the requirement of three-dimensional spatial distribution detection of clouds and aerosols around the world which will improve atmospheric monitoring system. The space-borne atmospheric detection lidar used ultra-stable laser resonator to get 110mJ laser output, and used space-borne plane etalon to get 40pm filter bandwidth, and used high-precision pointing controller that pointing accuracy of laser beam was less than 5 mu rad. Finally, the paper gives test data of atmospheric vertical profiles under 15km attitude obtained by a space-borne atmospheric detection lidar which shows dominant position of the lidar on atmospheric detection.