星载海洋激光雷达测深回波分类方法及验证  

Ocean Bathymetry Echo Classification Method and Verification for Spaceborne LiDAR

作　　者：徐嘉[1] 苏云 梁琨 XU Jia;SU Yun;LIANG Kun(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;Beijing Institute of Space Mechanics and Electricity,Beijing 100094,China;School of Electronic Information and Communications,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]北京空间机电研究所,北京100094 [3]华中科技大学电子信息与通信学院,武汉430074

出　　处：《航天器工程》2019年第6期73-80,共8页Spacecraft Engineering

基　　金：广西创新驱动发展专项(科技重大专项，编号桂科AA18118038)的支持

摘　　要：基于海洋激光雷达测深回波的时域特性,分析水体散射和海底回波不同特征,以及不同视场下不同回波数据的噪声统计特征,提出一种基于回波时域特征和双视场融合的星载海洋激光雷达测深回波分类方法。针对岛礁区域的机载试验数据分析表明,所提出的回波分类方法可实现99.4%的分类准确率,并且方法处理相对简单,易于实现,能为星载海洋探测激光雷达发展和应用提供有效技术支持。Based on the time-domain characteristics of ocean LiDAR bathymetry echoes,the different characteristics of seawater body scattering and seafloor echoes,as well as the noise statistical characteristics of different echo data in different fields of view are analyzed.An ocean bathy￣metry echo classification method based on the echo time-domain characteristics and dual-field fusion for spaceborne LiDAR is proposed.Airborne test data around some island and reef areas shows that the classification method proposed can achieve a classification accuracy of 99.4%,and the method is relatively simple and easy to implement,and the method can provide effective technical support for the development and application of spaceborne ocean detection LiDAR.

关 键 词：激光雷达 海洋测深 双视场 回波分类 

分 类 号：P229[天文地球—大地测量学与测量工程]