Object Detection, Location and Identification at Radio Frequencies in the Near Field
Lead Research Organisation:
UNIVERSITY OF MANCHESTER
Department Name: Mathematics
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
Organisations
Publications
Ledger P
(2023)
Characterising small objects in the regime between the eddy current model and wave propagation
in European Journal of Applied Mathematics
Ledger P
(2022)
Properties of generalized magnetic polarizability tensors
in Mathematical Methods in the Applied Sciences
Ledger P
(2022)
Minimal Object Characterizations Using Harmonic Generalized Polarizability Tensors and Symmetry Groups
in SIAM Journal on Applied Mathematics
Ledger P
(2022)
Properties of Generalised Magnetic Polarizability Tensors
Ledger P
(2025)
How Far Are Two Symmetric Matrices From Commuting? With an Application to Object Characterisation and Identification in Metal Detection
in Mathematical Methods in the Applied Sciences
Ozdeger T
(2022)
Measurement of GMPT Coefficients for Improved Object Characterisation in Metal Detection
in IEEE Sensors Journal
Watson F
(2024)
Resolving full-wave through-wall transmission effects in multi-static synthetic aperture radar
in Inverse Problems
| Description | utorials on the developed MPT-Calculator (Autumn 2022 Release and June 2023 Release) have been organsied in Autumn 2022 and Spring 2023. In Autumn 2022 a series of four tutorials on MPT-Calculator were organised with a company specialising in metal detection and the workshop was attended by 5 participants from the company. In Spring 2023 a further two workshops were organised. One to update the company with the latest improvements to the software and a further one-day workshop with on-line and in-person participants from industry and academia. In Spring 2023 a one-day long tutorial on MPT-Calculator was organised at the Isaac Newton Institute in Cambridge. This was attended by international representatives from academia, online international participants and participants from industry. During January 2025-December 2025 funding from an ICMS funded KE-Catalyst project is building a new collaboration with The Halo Trust with a view to improving the characterisation of buried objects, such as the humanitarian identification of anti-personnel landmines, that can be embedded in the next generation of metal detectors. |
| Exploitation Route | This works has led to the following developments and achievements 1) New mathematical theory describing the characterisation of objects in regime between magnetic induction and wave propagation. 2) New improved open-source software for object characterisation that allows accurate characterisation of highly conducting magnetic objects at frequencies at the limit of the eddy current model. With multiple releases and improvements during the project. 3) New detailed comparisons with experimental measurements of complex real-world objects showing the accuracy and validity of the characterisation to the limit of the eddy current model. 4) New computational algorithms for efficient and accurate computations of object characterisations including adaptive reduced order models, fast output computations, prismatic layers for resolving thin skin-depth effects. 5) A large bank of Jupyter tutorials and in-person tutorial sessions for use of the developed software. 6) New open datasets to accompany the published papers. 7). New open dataset of simulated object characterisations that can be used to assist with identifying hidden objects. 8) New probabilistic classification procedures for identifying hidden objects using open datasets of simulated object characterisations and novel types of features. |
| Sectors | Aerospace Defence and Marine Agriculture Food and Drink Construction Energy Environment Healthcare Security and Diplomacy Transport |
| Description | Findings Tutorials on the developed MPT-Calculator (Autumn 2022 Release and June 2023 Release) have been organsied in Autumn 2022 and Spring 2023. In Autumn 2022 a series of four tutorials on MPT-Calculator were organised with a company specialising in metal detection and the workshop was attended by 5 participants from the company. In Spring 2023 a further two workshops were organised. One to update the company with the latest improvements to the software and a further one-day workshop with on-line and in-person participants from industry and academia. In Spring 2023 a one-day long tutorial on MPT-Calculator was organised at the Isaac Newton Institute in Cambridge. This was attended by international representatives from academia, online international participants and participants from industry. |
| First Year Of Impact | 2023 |
| Sector | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Electronics,Energy,Environment,Healthcare,Manufacturing, including Industrial Biotechology,Security and Diplomacy |
| Impact Types | Economic |
| Title | MPT Calculator (new version) |
| Description | Python code using FEM to calculate magnetic polarizability tensors |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| Impact | Used by metal detector researchers in engineering |
| Description | School talk Manchester |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Schools |
| Results and Impact | Talk to sixformers in Manchester on mathematics of demiining |
| Year(s) Of Engagement Activity | 2019 |