Abstract:A real-time high precision positioning calculation method of the BDS real-time orbit correction parameters is presented. The precision of the real-time orbit correction parameters and its attenuation condition are analyzed. The results show that the real-time orbit correction parameters obtained by this method could basically meet the demand of the BDS real-time high precision positioning. The average precision of the GEO satellites’ orbit real-time correction parameters is 2.3 m. The average precision of the IGSO and MEO satellites’ orbit real-time correction parameters is better than 8 cm.