一个精确而稳定的基于空间的时间系统,用于智能城市的导航
Shaoqian Li1,2,3,4, Baojun Lin1,2,3,4,5, Rui Li2,3,4
1Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 101408, China.
Sensors (Basel, Switzerland)
|January 23, 2024
概括
一个新的基于太空的时间系统增强了智能城市的卫星导航. 这种精确的系统可以提高计时的准确性和稳定性,这对于可靠的定位服务至关重要.
科学领域:
- * 卫星导航系统 卫星导航系统
- * 智慧城市应用程序
- * 具有高精度计时功能.
背景情况:
- *高精度和高稳定的基于空间的时间系统对于智能城市卫星导航的服务质量 (QoS) 是必不可少的.
- *当前的系统需要精确的时间参考,以便可靠的导航和定位.
研究的目的:
- * 提出一个使用自主时间尺度的精确和高稳定的基于空间的时间系统.
- *研究生成,维护和传输高精度的基于空间的时间参考.
- * 改进卫星时钟偏移建模和预测,用于增强导航服务.
主要方法:
- * 开发使用ALGOS算法进行跨卫星链路双向时间比较的集中时间比较方法.
- *与参考相比,对卫星的时差,速度和漂移参数的同时估计.
- *使用一段时间内所有卫星链路的相对时差观测.
主要成果:
- * 在自主时间尺度参考下,证明了拟议的基于空间的时间系统的高精度和稳定性.
- * 与直接观测方法相比,实现了显著更高的时钟偏移监测弧覆盖率.
- *使用北斗导航系统的现实数据验证了系统的效率.
结论:
- * 拟议的基于空间的时间系统有效地满足了智能城市导航中高精度和高稳定度计时的要求.
- * 该系统提供了卓越的时钟偏移监控功能,提高了卫星导航的可靠性.
- * 这项研究为先进的卫星时钟偏移建模和预测提供了强大的框架.
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