激光雷达测绘卫星发展及应用

星载激光测绘技术的迅猛发展对传统卫星对地观测领域带来了新的突破，高精度对地观测数据有利于提升整体几何精度、高效率数据处理特性有利于实现快速应用，因此激光测绘卫星数据获取、处理和应用成为研究热点。首先介绍了激光测绘卫星原理特点和发展现状，然后以目前在轨激光雷达卫星ICESat-2为例，分析了载荷配置特点、数据处理方法以及在影像联合精确定位、多源地形融合、全球植被测量、浅海水深测绘等多个领域的测绘应用情况，最后就我国下一步发展激光测绘卫星谈一些思考。

Development and application of lidar mapping satellite

The rapid development of laser altimetry satellite has a great impact on the traditional satellite earth observation field. The accurate elevation data can effectively compensate the lack of optical satellites, while laser altimetry satellite data processing and mapping applications are worthy of attention. Firstly, the principle and characteristics of laser altimetry satellite was introduced, and the its development history was presented. Then, the current on-orbit LiDAR satellite ICESat-2 was focued on, which had a high degree of attention. The satellite configuration characteristics and data processing methods were discussed, and its surveying and mapping capabilities in many fields, such as image joint adjustment, multi-source terrain fusion, global vegetation survey, and shallow water bathymetry et al. were analyzed and revealed. Finally, some thoughts about the development and construction of laser altimetry satellite in China were shared.