北斗卫星导航系统海上丝绸之路定位性能分析
The Positioning Performance Analysis of the Beidou Navigation Satellite on the Maritime Silk Road
摘要: 为了掌握北斗卫星导航系统在海上丝绸之路的定位性能，本文利用STK仿真软件，对重点选取的海上丝绸之路九个战略支点的可见星数、GDOP值以及导航精度进行了系统分析，结果表明北斗二号系统在海上丝绸之路大部分地区可见星数可达到10颗左右，GDOP值在2~3之间，导航精度在10 m左右，但在部分地区还无法提供连续可靠的定位服务；北斗三号系统在海上丝绸之路可见星数可达到17颗左右，GDOP值在1~2之间，导航精度在8 m左右，可提供连续可靠的定位服务。
Abstract:
In order to master the positioning performance of Beidou navigation satellite system, the satellite visibility, GDOP value and navigation accuracy of Beidou at the nine important strategic pivots on the Maritime Silk Road are analyzed using the STK software. The results show that the number of visible satellites of Beidou-2 system is about 10, the GDOP is 2 to 3, and the navigation accuracy is about 10 m, which could not provide continuous and reliable service in some areas. The number of visible satellites of Beidou-3 system is about 17, the GDOP is 1 to 2, and the navigation accuracy is about 8 m, which could provide continuous and reliable positioning service on the Maritime Silk Road.
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