Data Processing of the D-class GPS 3D-space Geodetic Control Network in Kaifeng

GPS technology develops quickly in the construction of the control network for military and navigation purposes for its independent and quick determination of any point on the surface of the Earth and comparatively high positioning accuracy.And the control network based on GPS is GPS space geodetic control network.Because of the geodetic inaccuracy of GPS and the limitations of height anomaly and differences of geoidal heights of other methods,conventional leveling instruments are used for measurement for elevation fitting.Data processing of the D-class GPS 3D-space geodetic control network is explained.