星载云、气溶胶遥感雷达技术现状与发展趋势

Development Status and Direction of Spaceborne Lidar and Radar for Cloud and Aerosol Remote Sensing

大气云与气溶胶在全球气候和环境变化过程中扮演重要的角色。星载云、气溶胶遥感技术主要包括成像光谱仪等被动探测技术、激光雷达技术以及毫米波雷达技术。相比被动遥感技术,激光雷达、毫米波雷达可探测云、气溶胶垂直剖面,获取云、气溶胶三维空间分布信息。首先介绍星载云、气溶胶遥感技术特点与优势,接下来介绍星载云、气溶胶遥感激光雷达与毫米波雷达技术现状,最后给出星载云、气溶胶遥感雷达技术的发展趋势。

Atmospheric clouds and aerosols play an important role in global climate and environment change. Imaging spectroscopy, lidar and millimeter-wave radar can be used to detect global clouds and aerosols from satellite platforms. Compared with the passive remote sensing technologies, spaceborne lidar and millimeter-wave radar can detect the vertical profiles of clouds and aerosols, through which the three-dimensional spatial distribution of clouds and aerosols is obtained. This paper firstly introduces the characteristics and advantages of the spaceborne cloud and aerosol remote sensing technologies, and then introduces the current development status of the spaceborne lidar and millimeter-wave radar used for cloud and aerosol remote sensing. Finally, the paper gives the development direction of spaceborne lidar and radar on cloud and aerosol remote sensing.