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在GNSS相对定位中用于伪范围故障检测的跨频率交叉验证方法
Zhaoyang Li1, Dingjie Wang1, Jie Wu1
1College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China.
Sensors (Basel, Switzerland)
|August 28, 2025
概括
本研究引入了全球导航卫星系统 (GNSS) 相对定位的频率交叉验证 (IFCV) 方法. IFCV提高了故障检测和排除,比传统方法提高了准确性和效率.
科学领域:
- 地理工程
- 卫星导航系统
- 信号处理
背景情况:
- 全球导航卫星系统 (GNSS) 相对定位的伪范围测量可能会导致重大错误.
- 高性能故障检测和排除 (FDE) 对于可靠的GNSS应用至关重要.
- 像高级接收器自主完整性监测 (ARAIM) 这样的现有方法在准确性和计算效率方面存在局限性.
研究的目的:
- 为基于伪范围的GNSS相对定位提出有效的故障检测和排除 (FDE) 方法.
- 使用频率间交叉验证 (IFCV) 提高检测和排除错误测量.
- 与传统方法相比,提高定位精度和计算效率.
主要方法:
- 开发了GNSS相对定位的频率交叉验证技术 (IFCV).
- 使用多频差异化伪范围测量来创建频率间测试统计数据.
- 使用保守策略排除多个断层以确保稳固的位置确定.
主要成果:
- 与ARAIM相比,拟议的IFCV方法显示出明显较低的错误报警率 (0. 03%) 和错误检测率 (0%).
- IFCV的定位精度提高了78%,超过了ARAIM在故障注入后的55%的改进.
- 与ARAIM相比,IFCV的计算效率提高了10^4.
结论:
- IFCV方法为GNSS相对定位中的故障检测和排除提供了更好的方法.
- IFCV提供了更高的准确性和卓越的计算效率,使其成为ARAIM的可行替代品.
- 该方法在处理多个异常值方面的有效性确保了强大而可靠的定位解决方案.
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