Reservoir capacity measuring and calculating method based on fusion laser and multi-beam point cloud

The invention provides a reservoir capacity measuring and calculating method based on fusion laser and multi-beam point cloud, and belongs to the technical field of reservoir capacity measuring and calculating. The technical problem to be solved is to provide a reservoir capacity measuring and calculating method based on fusion laser and multi-beam point cloud. According to the technical scheme for solving the technical problem, an unmanned aerial vehicle red light Lidar and an unmanned aerial vehicle green light Lidar are adopted to obtain terrain around a reservoir area and partial data of a shallow water area, and meanwhile an unmanned ship is adopted to carry a multi-beam sounding system to carry out data collection on a reservoir deep water area; discrete point noise of the point cloud data is removed through statistical filtering, and point cloud noise on the water surface is removed; calculating an overlapping part of the green light Lidar point cloud and the red light Lidar point cloud, respectively e