Analysis on Positioning of Combined GPS/BDS/GLONASS Multi-system
SI Peng-wei;WANG Ming-ming;TAO Ren;College of Geomatics Science and Technology,Nanjing TECH University;Kebo Space Information Technology Co.,Ltd.;
Visible satellite number is an important indicator of the positioning performance of the navigation system and it is also the basic requirement of system availability. And the root mean square error is the standard of the observation accuracy. Through experiments,I analyze the number of visible stars and the mean square difference of multi system in different environments. In order to study the availability of multi system combination,and the positioning accuracy. Experimental result shows that under the same environment,a substantial increase in the availability of system combination model and its precision is higher than that the precision of GPS,which GPS/BDS/GLONASS system combined measurement accuracy the highest,GPS/BDS accuracy combination times and combined GPS/GLONASS accuracy slightly lower than GPS/BDS combination of precision.
【CateGory Index】： P228.4