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为了测量海冰厚度,使用时间域感应测量系统

Danny Hills¹, Becan Lawless¹, Rauan Khangerey¹

¹Department of Electronic and Electrical Engineering, University of Manchester, Manchester M13 9PL, UK.

Sensors (Basel, Switzerland)

|January 25, 2025

概括

一个新的时域电磁感应 (EMI) 传感器通过分析频率范围内的信号特性来估计海冰厚度. 这种新的方法提供了一种非破坏性的方法来测量到海面的距离,这对于海冰评估至关重要.

科学领域:

地质物理学地质物理学
海洋学海洋学海洋学
遥感遥感遥感遥感

背景情况:

频域电磁感应 (EMI) 是检测海水和推断海冰厚度 (SIT) 的标准.
现有的方法通常依赖于单频测量,从而限制了它们的精度.
海水的高电导率是EMI传感器利用的关键特性.

研究的目的:

引入和验证用于测量海冰厚度 (SIT) 的新型时间域EMI传感器.
探索EMI信号的光谱特性与海面距离之间的相关性.
建立一种使用广泛频率范围进行SIT评估的非破坏性方法.

主要方法:

一个时间域EMI传感器被开发和测试在带有海水的潮池中 (导电率57.3mS/cm).
测量是在不同的高度 (0.2-1.9米) 和倾斜度 (0°-45°) 进行的.
数据与使用COMSOL的有限元模型 (FEM) 模拟相关联,然后进行后处理.

主要成果:

确定了EMI响应与海面距离之间的相关性,作为SIT的代理.
传感器准确地估计了距离海面的距离在约10%以内,高度高达1.5米.
对于高达1.9米的高度,精度保持在15%以内.

结论:

开发的时间域EMI传感器为估计海冰厚度提供了一种新的,非破坏性的方法.
使用频率范围 (10 kHz至93 kHz) 提高了SIT测量能力,而不是单频方法.
传感器能够将信号光谱与海水距离相关,这证明了其对海冰精确监测的潜力.

关键词:

欧洲货币基金组织 (EMI) 是一个国际货币基金组织.宽带电磁感应的宽带电磁感应电磁传感传感器是一种电磁传感器.海冰的厚度海冰的厚度时间域金属探测器

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