A positioning method of distributed area satellite navigation system

A positioning method of distributed area satellite navigation system is studied for railway and river transport. The method is composed of multiple differential reference stations, the pseudorange corrections project positioning method of multiple differential stations area navigation system is proposed based on the analysis of the multiple stations errors and the ionospheric and tropospheric errors of single reference station. This method resolves the single reference station difference positioning errors increase with the distance between the reference station with the user station. The positioning accuracy is improved, and robustness and overlay efficiency are increased.