星载单光子激光雷达浅水测深技术研究进展和展望

在浅水测深技术中，星载激光测量系统可以覆盖一些机载/舰载系统难以到达的偏远水域，具有比被动光学影像水深测量精度更高、可全天时工作等独特的优势。以稀疏而少量的主动星载激光测量值为水深标定点，融合被动星载遥感影像，主被动融合的浅水测深是当前的趋势。本文首先介绍了星载单光子激光雷达的工作范围、物理参数和数据产品，概述了测量原理，综述了现有的星载单光子激光雷达测深的理论传输模型，对比了不同的点云数据去噪处理算法的优劣，归纳了星载融合测深反演技术在不同环境中的应用，总结了当前存在的问题，并对该技术未来的前景和发展方向进行了展望。

Progress and prospect of space-borne photon-counting lidar shallow water bathymetry technology

As a shallow water bathymetry technology, the space-borne laser measurement system can cover some remote waters that are difficult to reach by airborne/shipborne systems. It has unique advantages such as high measurement accuracy, working day-and-night ect. Taking a few sparse active space-borne laser measurements as the water depth calibration points, integrating passive space-borne remote sensing images, active and passive fusion is the current frontiers and hotspots in the field of bathymetry. We first introduces the working range, physical parameters and data products of space-borne photon-counting lidar, followed by the summarization of the measurement principle and theoretical transmission models, as well as the comparison of the advantages and disadvantages of different point cloud data denoising algorithms. At last, this paper concludes the application of space-borne fusion bathymetry inversion technology in different environ-ments, combs the process of technology development, summarizes the current problems, and looks forward to the future prospect and development direction of the technology.