중국의 군사전략과 GNSS 분석 = Analysis of China's Military Strategy and GNSS Chang-Mook Choi

다국어 초록 (Multilingual Abstract)

Operating a global satellite navigation system has great significance to a nation regarding economic effect and military strategy. Therefore, world powers have been establishing and operating their own navigation systems. China has also promoted development since 2000, and has declared BDS-3 Full Operation Capability (FOC) in June 2020. Thus, in this paper, China's military strategy and GNSS strategy and system performance were analyzed and compared with the US's GPS. The analysis showed that 10-13 satellites could receive BDS, which is 1-2 satellites more than GPS. However, in terms of DOP, the results were lower than GPS. This result is because BDS consists of 3 orbits GEO, IGSO, and MEO, so the results were good in certain areas but bad in certain areas. Also, accuracy wise the standard deviation of the latitude and longitude were 5m or less, showing excellent performance. Therefore, in the current situation where China's BDS-3 has built 30 satellites, it can be confirmed that China's BDS is on equal terms with the US's GPS.