Deployable sensors for concealed gun detection at a standoff distances.
Lead Research Organisation:
Queen Mary University of London
Department Name: Materials
Abstract
Gun crime is a problem in some areas in the UK and many other countries. The police have ways of detecting criminals carrying guns, but this usually involves surveillance over a period of time together with targeted stop and search. There is no affordable detector available that is capable of remotely sensing whether a person is likely to be carrying a gun or not. The police do have scanners and portals that can be installed at key locations such as airports and major event venues to detect people carrying even small metal objects, or portals that use harmless microwaves, THz waves or very low level x-rays to form images of concealed guns on a person. THz and microwaves can form clear body images by penetrating clothing, but moral and technical issues arise from the technology, particularly intrusion into privacy. Also, these are not easily deployable, however, and are still at the research stage in many cases. What is really required is a portable device capable of remotely and discretely detecting whether suspects are carrying weapons and this proposed project aims to commence the development of such a device. During its development, the research will aim to first identify what sort of electromagnetic radiation best penetrates clothing over a range of atmospheric conditions. Microwaves are a form of electromagnetic radiation, but other forms exist such as light, infra-red, Tera-Hertz and millimetre waves and they all differ in their ability to penetrate fabrics. It is also possible to use ultrasound to detect metal objects concealed under clothing and we also propose to investigate this. Some of these forms of electromagnetic radiation get absorbed by the body, whereas others are reflected back depending on the precise wavelength. We will be looking for reflections off the surfaces of the gun in a similar manner to radar detecting the bright echoes from ships and aircraft, whilst filtering out the lower level reflections from the human body. Guns are not the only objects that could be concealed about a person that could give these bright reflections at a remote sensing site. Mobile phones, leather wallets, pens and portable music players could also give detectable signals. We aim to use features unique to a gun, such as gun barrels and other cavities to identify unique signatures in the reflected signals. For example, the gun barrel acts as a resonant cavity rather like air blown over a musical wind instrument, and we aim to detect these resonances remotely. During the second phase of the investigation, we will utilise a mix of the most effective bands in the electromagnetic spectrum, whether that be radio frequencies, microwaves or some other part of the spectrum, together with ultrasound, to develop a sensor that is effective at detecting guns remotely and is deployable by the police. It is possible that different guns will produce different responses from the sensor, but we will use pattern recognition techniques similar to those used in the automatic recognition of number plates or handwriting (i.e. neural networks ) to learn to recognise these particular responses. The research will be undertaken by a consortium of Universities, namely Manchester Metropolitan University, Manchester University, University of Huddersfield and Queen Mary London who will each investigate different aspects of the problem.
Publications
Chen Yong-Tao
(2016)
Experimental investigation of ejecta on melted Sn sample under shock loading
in Acta Physica Sinica
Ren Guo-Wu
(2016)
Influence of prestress on shock behavior of polycrystalline iron via atomistic simulations
in Acta Physica Sinica
Ren G
(2013)
Low cost ceramic moulding composites: materials and manufacturing technology
in Advances in Applied Ceramics
Ren G
(2013)
Development of low cost ceramic moulding composites as fire barriers
in Advances in Applied Ceramics
Hapuarachchi T
(2007)
Fire Retardancy of Natural Fibre Reinforced Sheet Moulding Compound
in Applied Composite Materials
Ren G.
(2018)
Numerical investigation of dynamic behavior of metal Pb driven by oblique shock waves
in Baozha Yu Chongji/Explosion and Shock Waves
Ren G.-W.
(2015)
Experiment and numerical simulation on expansion deformation and fracture of cylindrical shell
in Baozha Yu Chongji/Explosion and Shock Waves
Guo Z.-L.
(2014)
Microscopic and macroscopic numerical simulation on interaction between stress wave and flaw
in Baozha Yu Chongji/Explosion and Shock Waves
Guo Z.
(2017)
Fracture mode transition in expanding ring and cylindrical shell under electromagnetic and explosive loadings
in Baozha Yu Chongji/Explosion and Shock Waves
Ren G.
(2017)
Numerical simulation of influence of constrained layer on expanding deformation of metal cylindrical shell
in Baozha Yu Chongji/Explosion and Shock Waves
Guo Z.
(2016)
Constitutive equation of expanding cylindrical shell at constant strain rate
in Baozha Yu Chongji/Explosion and Shock Waves
Ren G.-W.
(2016)
Experimental research on fracture of metal case under loading at high strain rate
in Binggong Xuebao/Acta Armamentarii
Liu M.-T.
(2013)
Research on fragment size of expanding fracture of 45 steel cylindrical shell
in Binggong Xuebao/Acta Armamentarii
Chung E
(2023)
Applied Methods to Assess the Antimicrobial Activity of Metallic-Based Nanoparticles.
in Bioengineering (Basel, Switzerland)
Mahalingam S
(2014)
Rheology and pressurised gyration of starch and starch-loaded poly(ethylene oxide).
in Carbohydrate polymers
Mu H
(2023)
Dual functional mesoporous silica colloidal electrolyte for lithium-oxygen batteries
in Chemical Engineering Journal
Ren G
(2016)
Influence of shockwave profile on ejecta from shocked Pb surface: Atomistic calculations
in Chinese Physics B
Loya A
(2015)
A molecular dynamic investigation of viscosity and diffusion coefficient of nanoclusters in hydrocarbon fluids
in Computational Materials Science
Ren G
(2016)
Interatomic potential for the NiTi alloy and its application
in Computational Materials Science
Xu L
(2009)
In vitro study on influence of nano particles of CuO on CA1 pyramidal neurons of rat hippocampus potassium currents
in Environmental Toxicology
Liu Z
(2011)
The inhibitory effects of nano-Ag on voltage-gated potassium currents of hippocampal CA1 neurons.
in Environmental toxicology
Ren G.-W.
(2015)
Statistical study on dynamic fragmentation of multiple metal rings
in Gaoya Wuli Xuebao/Chinese Journal of High Pressure Physics
Chen Y.-T.
(2013)
Asay-F-window applied to diagnostic of micro-spall phenomena
in Gaoya Wuli Xuebao/Chinese Journal of High Pressure Physics
Salarkia E
(2023)
Exploring mesoporous silica nanoparticles as oral insulin carriers: In-silico and in vivo evaluation.
in Heliyon
Ren G.
(2009)
Development of natural HEMP fibre sheet mould composites (NF- SMC)
in ICCM International Conferences on Composite Materials
Harmer S
(2008)
Determination of the complex permittivity of textiles and leather in the 14-40 GHz millimetre-wave band using a free-wave transmittance only method
in IET Microwaves, Antennas & Propagation
S. Harmer
(2008)
Determination of the complex permittivity of textiles and leather in the 14-40 mm wave band using a free-wave transmittance only method
in IET Microwaves, Antennas and Propagation
Ren G
(2009)
Characterisation of copper oxide nanoparticles for antimicrobial applications.
in International journal of antimicrobial agents
Liu M
(2017)
Experimental and numerical studies on the expanding fracture behavior of an explosively driven 1045 steel cylinder
in International Journal of Impact Engineering
Ren G
(2016)
Dynamic shear fracture of an explosively-driven metal cylindrical shell
in International Journal of Impact Engineering
Yang
(2011)
Nano-zinc oxide damages spatial cognition capability via over-enhanced long-term potentiation in hippocamus of Wistar rats
in International Journal of Nanomedicine
Chowdhury P
(2016)
Molecular dynamics modeling of NiTi superelasticity in presence of nanoprecipitates
in International Journal of Plasticity
Loya A
(2014)
Simulation and experimental study of rheological properties of CeO2-water nanofluid
in International Nano Letters
Ren G.
(2014)
Low-pass filter boundary condition for atomic-based finite element method
in Jisuan Wuli/Chinese Journal of Computational Physics
Liu Z
(2011)
Nano-CuO inhibited voltage-gated sodium current of hippocampal CA1 neurons via reactive oxygen species but independent from G-proteins pathway.
in Journal of applied toxicology : JAT
Chen Y
(2016)
Experimental Examination of Ejecta Production on Shock-Melted Sn Targets Under Various Surface Roughnesses
in Journal of Dynamic Behavior of Materials
Loya A
(2015)
Molecular dynamics simulation study of rheological properties of CuO-water nanofluid
in Journal of Materials Science
Nan L
(2016)
Antibacterial Performance of Cu-Bearing Stainless Steel against Staphylococcus aureus and Pseudomonas aeruginosa in Whole Milk
in Journal of Materials Science & Technology
Li M
(2015)
Antibacterial Performance of a Cu-bearing Stainless Steel against Microorganisms in Tap Water
in Journal of Materials Science & Technology
Li J
(2015)
Cu-bearing steel reduce inflammation after stent implantation.
in Journal of materials science. Materials in medicine
Xu P
(2012)
In vitro toxicity of nanosized copper particles in PC12 cells induced by oxidative stress
in Journal of Nanoparticle Research
Zhao J
(2012)
Involvement of reactive oxygen species and high-voltage-activated calcium currents in nanoparticle zinc oxide-induced cytotoxicity in vitro
in Journal of Nanoparticle Research
Li W
(2017)
Etidronate rescues cognitive deficits through improving synaptic transmission and suppressing apoptosis in 2-vessel occlusion model rats.
in Journal of neurochemistry
Yang Z
(2010)
A review of nanoparticle functionality and toxicity on the central nervous system.
in Journal of the Royal Society, Interface
Cortés D
(2007)
Mechanical properties of carbon-fibre reinforced silicate matrix composites
in Materials & Design
Xu Z
(2015)
Physio-chemical and antibacterial characteristics of pressure spun nylon nanofibres embedded with functional silver nanoparticles.
in Materials science & engineering. C, Materials for biological applications
Nan L
(2015)
Anti-biofilm formation of a novel stainless steel against Staphylococcus aureus.
in Materials science & engineering. C, Materials for biological applications
Ren L
(2016)
A novel coping metal material CoCrCu alloy fabricated by selective laser melting with antimicrobial and antibiofilm properties.
in Materials science & engineering. C, Materials for biological applications