Development of an ultra wide band microwave radar based footwear scanning system

The risk of attacks on travelling public has led to changes in security screening at airports. After the shoe bomber in 2001, each passenger must remove shoes, which might contain concealed threats to be x-rayed individually, which is inconvenient to passengers as well as airlines. An alternative approach is an Ultra Wide Band (UWB) Microwave Footwear Scanner swept between 15 to 40 GHz, which detects threats concealed within the shoes, while they are still worn. A prototype system is tested, which demonstrates the ability to detect concealed metal and dielectric objects. Results are compared with Finite Element Modelling simulations.

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“…In Fig. 11, images obtained by the alternative SAR processing technique [11] are shown for the same shoes as in Fig. 10.…”

Section: Resultsmentioning

confidence: 99%

“…A range resolution of 6 mm or which is dependent on the refractive in explosive material. To improve the along the scan of the shoe and still usin horn and long wavelength, a SAR meth be implemented, which gives a more foc shoe cross section [11].…”

Section: Footwear Scanner Systemmentioning

confidence: 99%

An Ultra Wide Band Microwave Footwear Scanner for threat detection

Rezgui

Andrews

Bowring

et al. 2014

2014 9th International Symposium on Communication Systems, Networks &Amp; Digital Sign (CSNDSP)

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“…A two-dimensional imaging scanner combined with a Matlab programme was implemented and developed by Rezgui et al [42][43][44]. The scanner was effective over the band GHz and it consisted of a two port vector network analyser (type: N5227A, manufacture: Keysight Technologies).…”

Section: Methodsmentioning

confidence: 99%

“…The SAR image processing algorithm developed by Sheen et al [46] was used in this paper after it has been reduced into two dimensions (range and lateral position). The scattered signal S received back to the transmission horn at position located at (x, 0) can be considered as the sum of the all scattered signals from each element of the target f (x , z )dx dz , situated at position (x , z ), each with its own phase factor determined by the distance r of the element to the horn antenna [42]:…”

Section: Synthetic Aperture Radar Algorithimmentioning

confidence: 99%

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Synthetic Aperture Radar Imaging for Burn Wounds Diagnostics

Owda

Rezgui

2020

Sensors

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The need for technologies to monitor the wound healing under dressing materials has led us to investigate the feasibility of using microwave and millimetre wave radiations due to their sensitivity to water, non- ionising nature, and transparency to dressing materials and clothing. This paper presents synthetic aperture radar (SAR) images obtained from an active microwave and millimetre wave scanner operating over the band 15–40 GHz. Experimental images obtained from porcine skin samples with the presence of dressing materials and after the application of localised heat treatments reveal that SAR images can be used for diagnosing burns and for potentially monitoring the healing under dressing materials. The experimental images were extracted separately from the amplitude and phase measurements of the input reflection coefficient (S11). The acquired images indicate that skin and burns can be detected and observed through dressing materials as well as features of the skin such as edges, irregularities, bends, burns, and variation in the reflectance of the skin. These unique findings enable a microwave and millimetre-wave scanner to be used for evaluating the wound healing progress under dressing materials without their often-painful removal: a capability that will reduce the cost of healthcare, distress caused by long waiting hours, and the healthcare interventional time.

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Development of an ultra wide band microwave radar based footwear scanning system

Cited by 2 publications

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An Ultra Wide Band Microwave Footwear Scanner for threat detection

An Ultra Wide Band Microwave Footwear Scanner for threat detection

Synthetic Aperture Radar Imaging for Burn Wounds Diagnostics

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