The Enhance of the Regional Navigation and Position Performance with the Interoperability of the GNSS

With the rapid development of the GNSS(Global Navigation Satellite System),the interoperability of multi-systems is widely focused in recent years.It's expressed that the development of GNSS,then took the comparison between the sole navigation satellite system(BDS)and multi-system as an example,making the simulation of the navigation and position performance in our homeland with the two indices:observed satellite number and DOP.The result of the simulation shows that the performance of the navigation and positioning is distinctly improved by multi-system interoperability.