Abstract:With the prominence of the strategic position of the Antarctic and Arctic and the development of the polar regions, people’s demand for polar navigation and positioning gradually increased. Based on the constellation structure of the current BDS system (BD2), complete BDS system (BDS) and GPS system, this paper evaluates the number of visible satellites, DOP value and positioning accuracy of the BD2, BDS system in the polar research stations (Yellow river station, Kunlun station, Zhongshan station, Great Wall station) and the Arctic circle. BDS, GPS and its combination system in the north and south pole positioning performance are compared and analyzed. The simulation results show that the current BDS system (BD2) only partially covers the polar regions, the ability to provide navigation and positioning to the polar regions is limited, and the positioning accuracy is greater than 30 m in a wide range. The positioning accuracy of the complete BDS system (BDS) in the polar region is comparable to that of the GPS system, the number of visible satellites can reach about 13, PDOP value can reach 1.6, and the positioning accuracy is better than 8 m. The PDOP value of GPS/BDS combination system in the polar region can reach 1.4, and the positioning accuracy is better than 6.0 m.
XU Wei,JIA Xue,QIAO Fang et al. Preliminary Assessment of Positioning Performance of BDS Navigation System in North and South Polar Regions[J]. jgg, 2018, 38(12): 1268-1273.