Target-based data processing method, laser radar and system

The invention discloses a target-based data processing method, laser radar and system, and the method comprises the steps: obtaining the three-dimensional scanning data of a target region, and enabling the three-dimensional scanning data to comprise the point cloud data of a plurality of targets; total station coordinates of a target point on the target are collected, and point cloud coordinates of the target point on the target are obtained through the point cloud data of the target; the corresponding relation between the total station coordinates and the point cloud coordinates of the target is obtained; and obtaining a total station coordinate corresponding to the point cloud data in the three-dimensional scanning data by using the corresponding relationship. According to the method, data obtained by deep mining after field data are collected can be quickly and efficiently fed back to a construction site through the total station, quick association between the data and the site is achieved, traditional man