北斗系统对亚太地区导航性能的改善研究

Research on How the Navigation Performance in the Asia-pacific Region Improved by the BDS

北斗卫星导航系统正式投入运营,使中国成为继美国和俄罗斯之后第三个正式运营全球卫星导航系统的国家。以北斗系统当前所覆盖的亚太地区为研究对象,分别在亚太地区选取五个城市乌鲁木齐、东京、昆明、马尼拉、悉尼,计算全球定位系统、全球定位系统及格洛纳斯卫星导航系统组合、全球定位系统及北斗系统组合在上述五个城市的可见卫星、几何精度衰减因子值和导航精度,以及整个亚太地区平均几何精度衰减因子值和平均导航精度,通过对计算结果的分析来研究我国的北斗系统给当前亚太地区导航用户带来的性能提升效果。

BeiDou satellite navigation system （BDS） has been put into operation, China has become the third nation that has the global satellite navigation system after America and Russia. The research object of this paper has been covered by BDS. Five cities in the Asia Pacific region are selected in this research, which are Urumqi, Kunming, Manila, Sydney and Tokyo. Visible satellites, geometric dilution of precision （GDOP） value and navigation accuracy of global positioning system （GPS）, GPS/global navigation satellite system （GLONASS） combination, GPS/BDS combination, are calculated in the above five cities, and the average GDOP and navigation accuracy are calculated as well. And how the BDS improves the performance in the asia-pacific region is studied by analyzing the calculation result.