基于密度不敏感微波衰减的雪液态水含量测量
Measurement of Liquid Water Content in Snow from Density-Insensitive Microwave Attenuation
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中文总结 AI 辅助
该研究提出一种无需雪密度测量的雪液态水含量测量原理，利用与雪密度无关的微带传输线微波衰减特性推断LWC，实验验证了其灵敏度与密度不敏感性，可用于积雪远程表征。
中文摘要 AI 辅助
本文提出一种无需先验知晓或单独测量雪密度的雪液态水含量（LWC）测量原理。雪的LWC会影响其有效介电常数的虚部，该虚部与嵌入积雪层的微带传输线的微波衰减相关，且与雪密度无关。通过分析一定微波频率范围内的衰减，可推断出对应的LWC。全波模拟显示其灵敏度约为每1% LWC对应2 dB，实验结果证实该方法对雪密度不敏感，凸显了其用于积雪远程表征的潜力。
英文摘要
A measurement principle for determining liquid water content (LWC) in snow is presented that does not require a priori knowledge or separate measurement of snow density. LWC affects the imaginary part of the effective permittivity of snow, which is linked to microwave attenuation along a microstrip transmission line embedded in the snowpack, independent of snow density. By analyzing the attenuation over a range of microwave frequencies, the corresponding LWC can be inferred. Full-wave simulations indicate a sensitivity of approximately 2 dB per % LWC,while experimental results confirm the insensitivity to snow density, highlighting the potential for remote snow characterization.
发表机构
- OST Eastern Switzerland University of Applied Sciences（东瑞士应用科学大学）
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