One of the principal limitations of employing a ground-penetrating radar (GPR) for landmine detection is the presence of clutter, i.e., reflections from the surrounding environment, which might interfere with the landmine echoes. Clutter presents similar scattering characteristics as typical targets and may significantly raise the detection threshold of the system. The capability to characterize the internal structure of a buried target might provide key unique information to develop advanced landmine-clutter discrimination algorithms, considering that the presence of internal scattering components can be univocally associated with man-made targets. In this letter, the possibility of identifying and characterizing these contributions from the GPR signature of a landmine is numerically assessed and experimentally validated. The simulated response from a landmine-like target shows that the presence of an internal structure generates additional reflection peaks, as a consequence of the layered structure of the object, and the field trials corroborate that it is possible to identify these scattering components and delineate their spatial distribution.

中文翻译：

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利用探地雷达表征地雷内部结构


采用探地雷达（GPR）进行地雷探测的主要限制之一是杂波的存在，即来自周围环境的反射，这可能会干扰地雷回波。杂波呈现与典型目标相似的散射特性，并可能显着提高系统的检测阈值。考虑到内部散射成分的存在可以与人造目标明确相关，表征埋藏目标内部结构的能力可能会为开发先进的地雷杂波辨别算法提供关键的独特信息。在这封信中，对地雷探地雷达信号识别和表征这些贡献的可能性进行了数值评估和实验验证。来自类地雷目标的模拟响应表明，由于物体的分层结构，内部结构的存在会产生额外的反射峰，并且现场试验证实可以识别这些散射成分并描绘出它们的特征。空间分布。