Document Type : Original Article
1 Faculty Member, Satellite Research Institute, Iranian Space Research Center
2 Research Engineer, Satellite Research Institute, Iranian Space Research Center
3 Iranian Space Research Center
This paper reviews design of Constellation for independent satellite-based navigation system with Middle East region coverage for regional positioning and augmentation service. Space segment of this constellation is composed of nine satellites in four orbits in such way three satellites have been placed on one GEO and two satellites on each three IGSO. In the coverage area, ground segment includes eleven ground monitoring stations, two masters and tracking control stations and twenty wide area reference stations are assigned only for augmentation with their master and uplink stations. Here we centered on space segment and specially design a navigation constellation system as a main orientation in this investigation and evaluation of the performance of the navigation system by combination with other satellite-based navigation systems. Hence, the parameters corresponding to navigation accuracy have been analyzed and compared with other active GNSS constellations. Analyses results express that geometric accuracy (GACC) of the designed system is solely 16 meters in 95% of a day in all points of desired area and in the case of combination with BeiDou and GPS the GACC would be improved to 14 and 12.5 meters respectively.