算法研究和精确比较BDS-3\GPS\Galileo的不同频率组合,用于亚太地区的精确定位
Meng Gao1, Zhihua Cao1, Ziheng Meng1
1School of Geomatics, Liaoning Technical University (LNTU), Fuxin 123000, China.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
这项研究分析了北斗导航卫星系统 (BDS) -3/GPS/利略在亚太地区的定位性能. 结果显示,BDS-3提供了比GPS和利略略微更好的定位,预计将进一步改进.
科学领域:
- 卫星导航系统 卫星导航系统
- 地质测量是指地质测量.
- 地理学工程 工程地质学
背景情况:
- 北斗导航卫星系统 (BDS) 正在不断发展,需要对其定位能力进行持续评估.
- 像GPS和利略这样的全球导航卫星系统 (GNSS) 对全球定位至关重要,它们与BDS的集成提高了性能.
- 了解不同频率组合的性能对于优化卫星导航应用至关重要.
研究的目的:
- 在亚太地区调查和比较BDS-3,GPS和利略在亚太地区的各种频率组合的定位性能.
- 分析结合BDS-2和QZSS数据对精确点定位 (PPP) 的定位准确度和收速度的影响.
- 评估BDS-3在研究区域的GPS和利略的优势.
主要方法:
- 利用武汉大学的精密产品和来自九个多全球导航卫星系统 (MGEX) 站的观测数据.
- 在多个频段 (B1I,B1C,B2a,B3I,L1,E1,L1L2,E1E5a) 中比较标准点定位 (SPP) 和精确点定位 (PPP) 的性能.
- 评估了将BDS-2和QZSS数据添加到BDS-3/GPS/利略星座对静态和动态模式中的定位精度的影响.
主要成果:
- 对于BDS-3/GPS/Galileo SPP,定位精度的顺序是B1C>E1>L1>B1I>B3I>B2a. 添加BDS-2/QZSS并没有显著改善SPP.
- PPP收速度按照下面的顺序进行:L1L2 > B1IB3I > E1E5a > B1CB3I > B1CB2a > B1IB2a > B2aB3I. 在添加BDS-2后,B1IB3I组合显示出显著的改善.
- BDS-3/GPS/利略PPP定位精度为B1IB3I > B1CB3I > L1L2 > E1E5a > B1B2a > B1CB2a > B2aB3I. 在此期间,该系统的定位精度为B1IB3I > B1CB3I > L1L2 > E1E5a > B1B2a > B1CB2a > B2aB3I. 与亚太地区的GPS和利略相比,BDS-3的性能略高.
结论:
- B1IB3I频率组合,特别是当与BDS-2增强时,在静态和动态模式中显著提高PPP性能.
- 道卫星导航系统 (BDS) - 3在亚太地区的定位性能上比GPS和利略略有优势.
- 预计BDS的持续开发将进一步提高其全球和区域定位准确性和可靠性.
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