High-precision positioning method, device and system, electronic device and storage medium

The invention relates to a high-precision positioning method, device and system, an electronic device and a storage medium, and the method comprises the steps: obtaining the shore bridge position information of each shore bridge in a port in real time based on a V2X networking technology; processing the position information of each quay crane and the quay crane point cloud template to generate a quay crane point cloud map; taking currently acquired laser radar data as a to-be-matched point cloud, taking a quay crane point cloud map as a reference map, taking current position information of a container truck as an initial position of the to-be-matched point cloud, and utilizing a point cloud registration algorithm to obtain an optimal matching position of the to-be-registered point cloud in the reference map; obtaining the pose change information of the to-be-registered point cloud relative to the initial position; according to the pose change information and the initial pose of the container truck, obtaining