Target trajectory measurement method using laser radar point cloud composition

The invention relates to radio wave distance measurement, in particular to a target trajectory measurement method using laser radar point cloud composition, which is used for solving the defects that the traditional point cloud clustering and threshold truncation are very long in operation time on the background, targets are difficult to screen quickly, and a large amount of redundant judgment calculation exists in the point cloud processing process. According to the target trajectory measurement method using the laser radar point cloud composition, firstly, a three-dimensional point cloud of a motion process of a target is projected to a two-dimensional plane through a phase projection method, and then gradient threshold segmentation and position determination are performed on the target on a two-dimensional image to obtain a target binarization region map; and further obtaining a target three-dimensional point cloud by using the gray level of the two-dimensional image points in the target binarization regio