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超声波不确定性传播:确保从实验室到现场的可追溯性
Samuel K Kristoffersen1, Séverine Demeyer2, Paul Vincent1
1CEA, DAM, DIF, F-91297 Arpajon, France.
The Journal of the Acoustical Society of America
|April 23, 2025
概括
本研究提出了一种用于校准超声波传感器的新方法,提高了全面禁止核试验条约组织的测量可靠性. 了解测量不确定性可以增强地震和声源分析.
科学领域:
- 地质物理学 地质物理学
- 声学 声学 在声学上.
- 计量学 计量学 计量学
背景情况:
- 准确的超声波测量对于全面禁止核试验条约组织的全球监测网络至关重要.
- 估计测量信心需要分析整个过程,从实验室校准到现场部署,包括相关的不确定性.
研究的目的:
- 开发一种用于可追踪测量超声波信号光径,追踪速度和振幅的方法.
- 介绍一项用于超声波传感器的现场校准方法,以确保在不同环境条件下的现场可追溯性.
主要方法:
- 开发了一种方法,考虑了可追溯性链和各种不确定性来源在超声波测量过程中.
- 在IS26 (德国) 实施了现场校准方法,补充了加布里埃尔森现场校准.
- 分析了标准不确定性,即近视角 (0.05°7°) 和轨迹速度 (0.260 m/s),以及振幅 (0.2 dB).
主要成果:
- 标准的不确定性在向和跟踪速度主要是由加布里埃尔森的阶段不确定性驱动.
- 幅度不确定性受到温度和压力易感度的显著影响.
- 该研究量化了对超声波测量的不确定性,这对于条约验证至关重要.
结论:
- 提出的方法有助于更好地理解超声波测量中的不确定性.
- 改进的不确定性量化导致更准确的来源产量和位置估计.
- 这项工作支持全面禁止核试验条约组织的使命,通过提高对超声波数据质量的信心.
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