Power transmission line ground wire fitting method based on low-density airborne laser point cloud

The invention relates to a low-density airborne laser point cloud-based power transmission line ground wire fitting method. The method comprises the following steps of: obtaining a first hanging point at a joint between a ground wire and each corresponding tower; simulating an initial simulated ground wire corresponding to the first hanging point based on an initial corresponding relation between the simulated data and the simulated ground wire, taking the initial corresponding relation as a current corresponding relation, and taking the initial simulated ground wire as a current simulated ground wire; acquiring a clustering point cloud corresponding to the current simulated ground wire; simulating an intermediate simulation ground wire corresponding to the clustering point cloud through the corrected corresponding relation; and if the corrected corresponding relation does not reach the preset correction termination condition, taking the middle simulation ground wire as a new current simulation ground wire, a