A new form of geodetic coordinate system based on geodesic coordinate instead of geodetic longitude and latitude is proposed.

In order to satisfy the requirement for the route location of the Shanghai-Hangzhou magnetic suspension project, a new form of geodetic coordinate system was proposed.

Based on the theories of Differential Geometry and Geodesy,algorithms and formulas for direct and inverse solution of geodetic problem in the new form of geodetic coordinate system on the ellipsoidal surface are deduced in this paper.

The simple formula to compute geodetic coordinate from rectangular space coordinate;

Deducing from geodetic coordinate differential formula;

Road curve geodetic coordinate calculation based on branch traverse survey

The analysis of conversion from geocentric to geodetic coordinates with Newton iteration to solve non-linear equations

The mathematic characteristics of transition curve and its parallels, and geodetic coordinates calculating methods of the curve inflexions and points of intersection are analyzed,and the second development of the Auto CAD is used for the Visual LISP programs for the solution of the rigidity of the theory and the practicality of the calculation.

For the complex traditional arithmetic that is difficult to be applied to practice, this paper presents arithmetic of the coordinates transformation from geodetic coordinates to plane rectangular coordinates and screen coordinates.

A new form of geodetic coordinate system with length quantity as coordinate parameters was presented for the first time in a former paper of the authors,and this paper shows that those two forms of geodetic coordinate system are regular coordinate system,then the fundamental and method of transformation between the two geodetic coordinate systems are proposed.

A new form of geodetic coordinate system based on geodesic coordinate instead of geodetic longitude and latitude is proposed.

With the extensive application of GPS technique,the transformation model between two geodetic coordinate systems,geodetic coordinates formulae by differential method,which is carried out by the seven-parameter similarity transformation model and some well-known formulae such as Bursa-Wolf and Molodensky-Badekas models etc.

converting from 84 and plane rectangular coordinates to 80 coordinates system,this paper proposes a conversion algorithm of WGS84 geodetic coordinates-spatial Rectangular Coordinates-WGS80 geodetic coordinates to achieve the display of GPS positioning in the electronic map.