Implementation of a new technique for magnetic improvised explosive device detection

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Date
2018-07-01
Authors
Hamzah Naser Mahmood
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The Magnetic Improvised Explosive Devices (IEDs), also commonly known as a type of a sticky bombs, are simply constructed devices yet very lethal. Consequently, this research highlights the limitations of methods that have been proposed to counteract this threat and its ever-increasing danger by indicating their lack of systematic experimentation setups, commercial unavailability in addition to the inevitable possibility of risking personnel safety while operating some systems due to lack of automation or being not portable. The research has investigated a consumergrade sensor that is capable of sensing a magnetic field ranging within ±8 Gauss. The sensor is employed for sensing magnets to mimic the magnetic IEDs. The magnets are of two different materials (contrasting in magnetic field density strength) with different counts, and they were used to develop different possibilities of scenarios. The magnets are Neodymium and Ceramic with an average flux density of 12,500 and 2,500 Gauss respectively. Furthermore, a new technique has been developed and implemented as a practical systematic testing technique based on gridded experimental area, which has an individual cell size corresponding to a characterized threat. This new technique is evaluated using the employed sensor with the purpose of exploring its extent of employability for Magnetic IEDs detection. As a result, it has allowed the representation of the results in a traceable manner and paved the way for further analysis. The results of the new technique have revealed that the chances of threat detection using the employed sensor in conjunction with magnets under defined cases, where the worst case there is a ~ 181.4% chance of detection whereas the best case it could be as high as ~ 1666.7%, at a distance of 8.5 cm away from the sensor. However, starting from 17 cm distance from the sensor onwards, different number of magnets of the two different materials begins to contribute differently into readings variations. Its extent of distinguishability values is as low as ~ 0.72 % to ~ 2.1 % at a distance of 42.5 cm to 51 cm respectively for Ceramic material, while the Neodymium material is as low as ~2.3% and 2.5% at a distance of 59.5 cm and 42.5 cm respectively. Finally, the research eventually recommended its employability in comparison with others laying the ground for future studies concerned with developing low-cost, portable Magnetic IEDs detection systems.
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