基于利略的多普勒转移和时间差异载体阶段:一个静态案例演示
Ciro Gioia1, Antonio Angrisano2, Salvatore Gaglione3
1Independent Researcher, 21020 Brebbia, Italy.
Sensors (Basel, Switzerland)
|August 12, 2023
概括
对于使用全球导航卫星系统 (GNSS) 进行导航的车辆,新的欧洲法规. 本研究比较了两种基于利略的速度估计方法,发现时差载波阶段 (TDCP) 提供了比多普勒转移更高的精度,从而提高了道路安全.
科学领域:
- 导航系统 导航系统
- 卫星技术 卫星技术 卫星技术
- 汽车工程 汽车工程
背景情况:
- 欧盟委员会的法规要求在车辆中安装先进的导航系统,包括eCall和智能驾驶记录仪.
- 全球导航卫星系统 (GNSS) 对于车辆定位,速度和时间 (PVT) 信息至关重要.
- 准确的车辆速度估计对于智能速度辅助 (ISA) 等新安全功能至关重要.
研究的目的:
- 介绍和比较两种基于利略的速度估计方法:多普勒转移和时间差运载相 (TDCP).
- 评估这些方法在各种利略信号 (E1,E5a,E5b,E5 Alt BOC,E6) 的性能.
- 根据新规定,确定最准确的方法,可靠地估计车辆的速度.
主要方法:
- 使用来自利略信号的多普勒转移测量来估计速度.
- 使用来自利略信号的时间差载波相 (TDCP) 测量进行速度估计.
- 使用所有利略信号中的真实静态数据对水平和垂直速度误差进行比较分析.
主要成果:
- 与基于多普勒的方法相比,时间差载波阶段 (TDCP) 方法的性能明显提高.
- 在基于多普勒的解决方案中,E5 Alt BOC信号提供了最准确的速度估计.
- 这两种方法都使用所有可用的利略信号进行了测试,以评估它们的有效性.
结论:
- 对于高精度的速度估计,TDCP技术非常有前途,其性能优于传统的多普勒基方法.
- 利略的E5 Alt BOC信号被认为是多普勒基速度估计中最准确的.
- 这些发现支持为未来的汽车应用开发更可靠,更准确的导航系统.
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