Satellite Navigation And Related Technology Research And Realization

The constitutions and principles of position of GPS > GLONASS and BeiDou Navigation System are described all around in this article, And the following technologies are studied and realized: communication between COM Ports with OOP technology, Compound Navigation with GPS and GLONASS. Calculate Velocity, Pseudorange Difference, smoothing Pseudorange with the carrier-phase and models to correct error are also done; the transforms between WGS-84 and PZ-90, as well as WGS-84 and BeiJing54 coordinate system; the technologies to display and manage bitmap, vector map based on MapX also; Conversion of data formats between GJB and Mif Data Format of Maplnfo Corp. Arithmetic of creation DEM data based on contour line data from 1 -.25000 Map data with GJB format. Texture the surface of terrains with corrected aviation image. Calculate tree-dimension coordinates, Simulate navigation with VR technology and the arithmetic of Level of Detail to display tree-dimension terrain model. And the arithmetic of image enhance, geometry transform, Image matching also.