到目前为止，中国已经完成了北斗卫星导航系统的第三代网络系统，这是国家空间研究工作一个新的里程碑。
So far, China has completed the third generation network of China's BDS. It was a new milestone in the nation's space research work.
北斗导航系统成为第三个面向国际航海应用的全球卫星导航系统。
The Beidou navigation Satellite System has become the third GNSS applied in international navigation.
本论文分析了基于北斗导航定位系统的三星定位系统总体结构和工作原理，对卫星导航中与定位精度有关的部分进行了研究。
This thesis analyzes the principle and architecture of three-star navigation system based on "Beidou" system and investigates the problems related with positioning precision.
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