Underground Tunnel Detection in Mountainous Environment

Kechao Wang, Xiaotai Liu, Wenbing Deng, Hanyu Liu, Tianxu Zhang, Gong Wei
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Abstract

At present, most of the research on detection methods of strip-shaped underground tunnels in mountainous areas using infrared imaging technology at home and abroad adopts the method of analyzing the time-varying law of target signals based on multi-temporal infrared images. And establish a mathematical model to calculate and solve the tunnel position. Or use the microwave infrared enhancement technology to enhance the infrared image according to the mathematical model of microwave power transmission to highlight the contrast of target/background signal strength, so as to realize the detection of the location of the belt-shaped underground tunnel in the mountains. We use the heat between the mountain and the air layer. The radiation model combines the DEM data to calculate the solar radiation energy, and iteratively filters out the background heat flow field energy of the mountain. Combined with hyperspectral data, the background heat propagation energy of the mountain is calculated; the infrared remote sensing image is filtered out using the underground target inversion model. The optimal altitude and disturbance signal distribution map of the belt-shaped underground tunnel in the mountain are obtained from the background heat flow field energy of each layer of the mountain
山地环境下的地下隧道探测
目前,国内外利用红外成像技术对山区条形地下隧道探测方法的研究,大多采用基于多时相红外图像分析目标信号时变规律的方法。并建立了计算求解隧道位置的数学模型。或利用微波红外增强技术,根据微波功率传输的数学模型,对红外图像进行增强,突出目标/背景信号强度的对比,从而实现山区带状地下隧道的位置检测。我们利用山和空气层之间的热量。辐射模型结合DEM数据计算太阳辐射能,迭代滤除山区背景热流场能量。结合高光谱数据,计算了山区的背景热传播能;利用地下目标反演模型对红外遥感图像进行滤波。根据山中各层背景热流场能量,得到山中带状地下隧道的最优海拔高度和扰动信号分布图
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