【作者】 吉旭东；

【导师】 邵晓鹏；

【作者基本信息】 西安电子科技大学 ， 光学工程， 2009， 硕士

【摘要】 自然地表的红外辐射特性在军事领域、地质研究、气象以及农业领域都有着广泛的应用,如地面军事目标的伪装研究、目标与环境的红外辐射特性研究。本文以地雷为研究对象,主要介绍了地雷探测的研究情况,建立了探测地雷的物理模型和数学模型,给出风场下的地表温度场的统计特性、裸露地表的红外辐射统计特性以及土壤温度场随着深度的变化趋势。通过对地雷物理模型的研究,得出了影响地表辐射的主要因素。利用热平衡法建立了节点离散方程。采用有限元方法对土壤无地雷时和有地雷时的温度场进行仿真,得出了掩埋地雷温度场的探测特性。更多还原

【Abstract】 The infrared radiation characteristic of terrain surface has wide applications in military, geology, meteorological phenomena and agricultural field, such as research on military camouflage of targets, and infrared radiation characteristics of background and target.Landmine was studied in this paper. Landmine-detection research was introduced in brief first, then the physical model and the mathematical model were established to detect landmines. The statistical characteristic of the temperature field by wind and the infrared radiation characteristic of the bared terrain surface were presented in detail. And the change trend of climate of soil temperature field with depth was explained. Some main factors which affect terrain surface were acquired by researching on the physical model of landmines. Using the method of heat balance, discrete node equation was established. Finite element method was adopted to simulate the temperature fields of soil with buried landmines and without them, and the detection characteristics of temperature field of buried landmines was reached.更多还原