在现场进行超声波校准,以纠正波浪参数估计
S K Kristoffersen1, A Le Pichon1, M Schwardt2,3
1CEA, DAM, DIF, F-91297 Arpajon, France.
The Journal of the Acoustical Society of America
|March 6, 2024
概括
在国际监测系统 (IMS) 中对超声波传感器进行现场校准,可以提高数据的准确性. 这种方法纠正波浪参数估计中的错误,增强信号检测和源定位能力.
科学领域:
- 地质物理学和大气科学 大气科学
- 核试验监测监测 核试验监测
背景情况:
- 国际监测系统 (IMS) 使用超声波站来监测核试验和科学应用.
- 精确的传感器校准对于来自IMS超声波站的可靠数据至关重要.
研究的目的:
- 评估现场校准对于纠正超声波传感器缺陷的实用性.
- 为了证明现场校准对波参数估计和检测能力的影响.
主要方法:
- 在IMS站IS26 (德国) 和IS47 (南非) 使用了对超声波传感器的现场校准程序.
- 分析了校准对频率响应的影响,波浪参数估计 (后方方位,跟踪速度,振幅) 和信号检测.
主要成果:
- 现场校准准确地测量传感器的频率响应,并识别缺陷.
- 未经纠正的传感器问题可能会引入重大错误 (后方方位的度数,跟踪速度的几十米/秒).
- 应用现场校准可以纠正这些错误,检索准确的反向光度,跟踪速度和振幅.
结论:
- 现场校准对于保持IMS超声波站数据的准确性至关重要.
- 这种校准方法提高了检测能力,并改善了超声波源的识别和定位.
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