| 地雷对土壤表面红外辐射的影响 |
| 投稿时间：2017-07-04 修订日期：2017-07-10 点此下载全文 |
| 引用本文：郝争辉.地雷对土壤表面红外辐射的影响[J].红外,2017,38(10):31~36 |
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| 中文摘要:地雷排除一直是较难解决的问题。利用红外系统对地雷进行探测，主要取决于地雷与背景间的红外辐射差异。首先通过热平衡方程分析了影响地表温度的主要因素，以一维热传导方程为模型分析了埋设地雷对地表温度的影响。计算了地雷上方土壤与周围土壤的表面温度在一天中随时间的变化，并且与实际测量值进行了比较。在此基础上，利用高斯模型对实验数据进行了拟合分析，通过拟合模型可得到地表温度随时间的变化关系。结果表明，仿真地雷会使土壤层之间正常的热传导被阻断，造成地雷上方的土壤与周围土壤之间存在一定的温度差异；这种温度差异可以通过红外技术进行分辨。 |
| 中文关键词:热传导 地雷 红外辐射 地表 |
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| Influence of Landmines on Infrared Radiation of Soil Surface |
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| Abstract:Landmine exclusion has always been a difficult
problem. The detection of landmines by an infrared system mainly depends
on the infrared radiation difference between the landmine and the background.
Firstly, the main factors affecting ground surface temperature are analyzed
according to the heat balance equation. Taking the one-dimensional heat
conduction equation as a model, the influence of buried landmines on
ground surface temperature is analyzed. The variation of the surface temperature of the soil above a landmine and its surrounding soil with time in a day is calculated and compared with the actual measured values. On this basis, fitting analysis is carried out on the experimental data by using the Gaussian model. With a fitting model, the variation relationship between the ground surface temperature and the time can be obtained. The results show that the simulated landmine can block the normal thermal conduction between the soil above it and its surrounding soil and hence result in the temperature difference between the soil above it and its surrounding soil. This temperature difference can be detected by infrared technology. |
| keywords:thermal conductivity landmine infrared radiation soil surface |
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