Establishment of Another Form of Geodesic Coordinate System on Earth Ellipsoid
Feng Yan · Journal of Tongji University · 2001
This paper puts forward another form of the geodesic coordinate system on the earth ellipsoid for the first time.Expressed by length quantities u=s y,v=s x,two curvilinear coordinates or parameters are defined,with which two coordinate curves are constituted on the earth ellipsoid and vertical with each other.The formula for the scale factor of length of geodesic parallel lines is derived.It is showed that this scale factor depends on the length of geodesic parallel line from the point to the initial v coordinate curve.In order to indicate points on the earth ellipsoid,this form of the geodesic coordinate system is superior in some aspects to the conventional geodesic coordinate system i.e.geodetic coordinate system.It is favourable for setting up the three-dimensional visible GIS model in relatively large region.