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首页> 外文会议>Conference on Penetrating Radiation Systems and Applications II, Aug 2-3, 2000, San Diego, USA >X-ray Lateral Migration Radiography System for the Application of Land Mine Detection
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X-ray Lateral Migration Radiography System for the Application of Land Mine Detection

机译：X射线横向偏移射线照相系统在地雷探测中的应用

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摘要

X-ray lateral migration radiography (a Compton backscatter imaging method) generate images of land mines and other objects buried with less than 10 cm of overlaying soil. An x-ray pencil beam illuminates the object area pixel-by-pixel, and a detector array of two uncollimated and two collimated, large area, scintillators respectively register once-scattered and multiple-scattered photons from mines, other buried objects, and the soil background. Two surface-feature-dominant uncollimated detector images and two subsurface-feature-dominant collimated detector images are typically generated. In the collimated detector images, a shifting of the images from the object center is proportional to the depth-of-burial of the detected object. Real mine tests have been conducted and the images show the included air volume as a prominent feature. The combination of the geometrically regular air volumes and mine case present unique features which distinguish mine from nonmine objects. In fact, identification of some land mine types can be achieved from the acquired images. A field-test version of the system, to be used as a land mine object confirmation/identification detector is under construction. The completed generator/collimator x-ray source has been employed to produce the system-design raster direction of the incident photon beam, whilst one-dimensional movement of the object is temporarily employed to simulate the orthogonal image axis, Easily recognized acquired images of the test object clearly indicate that the desired pixel dwell time of 0.01 sec has been achieved. This image acquisition speed translates into approximate values of 1.8 sec for a 20 by 20 cm interrogated area, consistent with scanning an antipersonnel mine, and 16 sec for a 60 by 60 cm area, consistent with an antitank mine.
机译：X射线横向迁移射线照相（康普顿反向散射成像方法）生成埋有少于10厘米的覆土的地雷和其他物体的图像。 X射线铅笔束逐像素照亮对象区域，两个未准直和两个准直的大面积闪烁体的探测器阵列分别记录了来自矿山，其他埋藏物体和地雷的一次散射和多次散射光子。土壤背景。通常生成两个以表面特征为主的非准直探测器图像和两个以地下特征为主的准直探测器图像。在准直的检测器图像中，图像从物体中心的偏移与检测到的物体的埋葬深度成正比。已经进行了实际的防雷测试，图像显示了所包含的风量是一个突出特征。几何规则的风量和防雷箱的结合具有独特的特征，可将防雷与非防雷物体区分开。实际上，可以从所获取的图像中识别某些地雷类型。该系统的现场测试版本将用作地雷目标确认/识别检测器。完整的发生器/准直器X射线源已被用于产生入射光子束的系统设计光栅方向，而物体的一维运动被临时用来模拟正交像轴，因此很容易识别出所捕获的图像测试对象清楚地表明已达到所需的0.01秒像素停留时间。该图像采集速度转换为20到20厘米的探查区域大约为1.8秒，与扫描杀伤人员地雷相一致，而60到60厘米的区域则大约为16秒，与反坦克地雷相一致。

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