Ground Penetrating Radar as a Contextual Sensor for Multi-Sensor Radiological Characterisation.
Ground Penetrating Radar as a Contextual Sensor for Multi-Sensor Radiological Characterisation.
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DOI：
10.3390/s17040790
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发表时间：
2017-04-07
期刊：
影响因子：
--
通讯作者：
Gamage KA
中科院分区：
文献类型：
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作者：
Ukaegbu IK;Gamage KA
放射源存在于影响其探测和定位方式的环境或背景中。例如，由于运动的影响，移动源的上下文不同于静止源。在辐射检测和定位过程中纳入这种背景信息的需要需要将辐射传感器和背景传感器整合在一起。这两种传感器成功集成的好处是众所周知的，并在医学成像等领域得到了广泛报道。然而，这两种类型的传感器的集成也带来了创新的解决方案，以应对非医疗应用中放射源的表征方面的挑战。本文对这类应用的最新进展进行了综述。它还指出，这些应用程序大多使用视觉传感器作为表征放射源的上下文传感器。然而，视觉传感器无法检索位于核设施遇到的不透明环境中的放射性废物的背景信息，例如地下污染。因此，本文还研究了探地雷达(GPR)作为表征这类废物的背景传感器的问题，并提出了几种整合来自GPR和辐射传感器的数据的方法。最后，使用辐射传输和探地雷达模拟，演示了结合探地雷达和辐射成像对地下管道中的污染进行三维定位。
Radioactive sources exist in environments or contexts that influence how they are detected and localised. For instance, the context of a moving source is different from a stationary source because of the effects of motion. The need to incorporate this contextual information in the radiation detection and localisation process has necessitated the integration of radiological and contextual sensors. The benefits of the successful integration of both types of sensors is well known and widely reported in fields such as medical imaging. However, the integration of both types of sensors has also led to innovative solutions to challenges in characterising radioactive sources in non-medical applications. This paper presents a review of such recent applications. It also identifies that these applications mostly use visual sensors as contextual sensors for characterising radiation sources. However, visual sensors cannot retrieve contextual information about radioactive wastes located in opaque environments encountered at nuclear sites, e.g., underground contamination. Consequently, this paper also examines ground-penetrating radar (GPR) as a contextual sensor for characterising this category of wastes and proposes several ways of integrating data from GPR and radiological sensors. Finally, it demonstrates combined GPR and radiation imaging for three-dimensional localisation of contamination in underground pipes using radiation transport and GPR simulations.