Coordinate Transformations in Satellite Navigation Systems

Abstract

The methods of coordinate transformations in the same satellite navigation system and among different satellite navigation systems were summarized. The former includes a transformation between Cartesian coordinate and geodetic coordinate in Earth-Centered Earth-Fixed (ECEF) coordinate system, transformations among Cartesian coordinates with common point of origin, and a transformation between ECEF Cartesian coordinate system and local geographical coordinate system with uncommon point of origin. For the latter, seven-parameters Bursa model which is one of the most commonly used transformation methods was introduced. Finally, the transformation process of common coordinate systems in satellite navigation systems was concluded so that the data of satellite navigation and communication system could be processed conveniently.