Data fusing method and system based on multi-laser scanner

The invention discloses a data fusion method based on multiple laser scanners and a system. The data fusion method comprises: predefining a plane profile model for a mobile target; for each scan data frame, clustering the laser points of each data frame; in all clusters attained by different laser scanners, and for each cluster group which mutual distance is in a preset value, all direction vectors of the cluster group are matched with the plane profile model of the mobile target, combining the cluster group into a mobile target. The invention utilizes the character that the direction vectorsof the laser points measured by the laser scanners at any part and direction in one plane are matched with the plane profile model of the mobile target, to fuse the scanned data to improve the data fusion accuracy of multiple laser scanners.