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卫星时钟校正和不同精确产品对GPS和利略精确点定位性能的影响
Damian Kiliszek1, Karol Korolczuk1
1Faculty of Civil Engineering and Geodesy, Military University of Technology, gen. S. Kaliskiego 2, 00-908 Warsaw, Poland.
Sensors (Basel, Switzerland)
|January 28, 2026
概括
高质量的卫星时钟产品对于准确的精确点定位 (PPP) 是必不可少的. 与标准的SP3时钟 (ORB) 相比,专用时钟 (CLO) 产品显著提高了全球导航卫星系统 (GNSS) 的准确性和融合时间.
科学领域:
- 地质测量是指地质测量.
- 卫星导航 卫星导航 卫星导航 卫星导航
- 地质物理学 地质物理学
背景情况:
- 精确点定位 (PPP) 是一种高精度的GNSS技术.
- 卫星时钟的准确性对于PPP性能至关重要.
- 评估不同的卫星钟产品类型和计时策略是必要的.
研究的目的:
- 评估卫星时钟产品对PPP准确性和趋同的影响.
- 将专用时钟 (CLO) 产品与标准 SP3 时钟 (ORB) 产品进行比较.
- 分析不同时钟采样率和插值策略的影响.
主要方法:
- 处理了来自12个IGS站的多GNSS (GPS,利略,GPS+利略) 数据.
- 在各种产品线 (FIN,RAP,ULT) 中比较了SP3 (ORB) 和专用CLK (CLO) 产品.
- 测试了时间策略的最近时代采样 (CLOCK0) 和线性插值 (CLOCK1).
主要成果:
- 与ORB相比,CLO产品总是产生较少的2D/3D错误和更快的趋同.
- ORB 降低了几毫米的精度,并增加了5-10分钟的融合时间.
- 时钟插值为利略提供了5分钟钟的小益处,但往往对GPS有害.
结论:
- 密集,高质量的卫星时钟产品对于可靠的PPP至关重要.
- 专用时钟产品比标准的SP3产品提供更高的性能.
- 未来PPP精度的进步取决于卫星时钟数据的不断改进.
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