1 results about "Coordinate change" patented technology

This invention provides a coordinate transformation method based on server-side pre-transformation and user-side compensation transformation, comprising: the server receiving reference station coordinates in the source coordinate system and saving the original complete transformation parameters; constructing a first parameter set from the original complete transformation parameters according to the controlled rule of reference station coordinate change; performing a first-stage pre-transformation on the coordinates of all reference stations in the service area using the first parameter set to obtain intermediate broadcast coordinates, and generating real-time dynamic positioning broadcast data based on the intermediate broadcast coordinates; selecting control points, pre-transforming the control points using the first parameter set and transforming them using the original complete transformation parameters respectively, and solving for a second parameter set based on the transformation results of the control points and the transformation results; the user receiving the real-time dynamic positioning broadcast data and performing real-time dynamic positioning calculation, and performing a second-stage compensation transformation on the intermediate coordinates obtained from the real-time dynamic positioning calculation based on the second parameter set to obtain the final coordinates in the target coordinate system.