摘要
为了进一步检验北斗三号基本系统的基本导航定位服务性能,首先阐述北斗卫星导航系统发展历程及定位原理,然后在成都地区相同时间、地点、测试环境下,对北斗二号和北斗三号B1I频点、B3I频点单频定位性能进行测试分析。结果表明:在95%置信度条件下,北斗三号B1I频点定位精度与北斗二号定位精度基本相当;B3I频点定位精度优于北斗二号;位置精度衰减因子(PDOP)值分布在0~2范围内,明显优于北斗二号。
In order to further test the basic navigation and positioning service performance of the basic system of BeiDou navigation satellite system with global coverage(BDS-3),the paper described the development process and positioning principle of BeiDou navigation satellite system(BDS),tested and analyzed the single frequency positioning performance of B1 I and B3 I frequency points of BeiDou navigation satellite(regional)system(BDS-2)and BDS-3 under the same time,place and test environment in Chengdu.Result showed that:under the condition of 95%confidence,B1 I frequency point positioning accuracy of BDS-3 would be basically equal to that of BDS-2,while B3 I frequency point positioning accuracy would be better than that of BDS-2;and PDOP value would be distributed in the range of 0 to 2,which could be obviously better than that of BDS-2.
作者
魏钢
高皓
项宇
WEI Gang;GAO Hao;XIANG Yu(Beijing Satellite Navigation Center,Beijing 100094,China)
出处
《导航定位学报》
CSCD
2020年第2期8-11,共4页
Journal of Navigation and Positioning
关键词
北斗一号
北斗二号
北斗三号
定位精度
位置精度衰减因子
BeiDou navigation demonstration system(BDS-1)
BeiDou navigation satellite(regional)system(BDS-2)
BeiDou navigation satellite system with global coverage(BDS-3)
positioning accuracy
position dilution of precision(PDOP)
