在使用双指数交叉验证和高度依赖值的单频GNSS接收器中实时循环滑动检测
Mireia Carvajal Librado1,2, Kwan-Dong Park1,2,3
1Department of Electrical and Computer Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.
Sensors (Basel, Switzerland)
|October 16, 2025
概括
本研究介绍了一种新的实时循环滑动检测算法,用于单频全球导航卫星系统 (GNSS) 接收器. 该方法准确地识别使用伪范围和载体相测量而没有额外数据的周期滑动.
科学领域:
- 地理学工程 工程地质学
- 卫星导航系统 卫星导航系统
- 信号处理 信号处理
背景情况:
- 载波相测量的周期滑动是单频GNSS接收器的一个主要障碍,特别是在实时场景中.
- 单频接收器缺乏双频系统的冗余测量,以轻松检测周期滑动.
- 快速可靠的循环滑动检测对于GNSS定位的完整性至关重要.
研究的目的:
- 为单频GNSS接收机开发和验证一个实时循环滑动检测算法.
- 为了实现高检测准确度,并最大限度地减少假阳性,没有外部数据.
- 为需要精确实时GNSS数据的应用提供强大的解决方案.
主要方法:
- 一个新的算法,利用伪范围和载体相可观测的短期差异化.
- 一个两步检测逻辑,涉及代码减载体的第一阶段差异化和载体阶段的第二阶段差异化.
- 实施卫星高度依赖的适应值,以在各种信号条件下提供强大的性能.
主要成果:
- 该算法在实验测试中证明了超过98%的检测准确度,用于周期滑动超过10个周期.
- 在人工滑动测试中实现零假阳性,表明高可靠性.
- 在信号不稳定期间显示了与接收器87.93%的一致性 锁定指示器的损失 (LLI).
结论:
- 拟议的算法提供了一个有效的实时解决方案,用于单频GNSS接收器的循环滑动检测.
- 它独立于用户位置,接收器标志或额外的传感器运行,简化了集成.
- 该方法为提高单频GNSS应用的可靠性提供了一个强大而准确的工具.
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