Dhulashia, Dilan;
(2024)
RF sensor fusion in congested and contested electromagnetic environments.
Doctoral thesis (Ph.D), UCL (University College London).
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Abstract
Radar systems stand as pivotal sensing solutions in the modern world, widely deployed across military and civilian applications. Contemporary systems are multifaceted, undertaking essential roles including detection, parameter estimation, and classification. The challenges involved in effectively performing these tasks become even greater in military applications, as adversarial technologies constantly emerge, seeking to disrupt and deny radar operations, or when the availability of bandwidth is limited. In such instances, it has been posited that multistatic radar systems may be a solution to maintain or improve sensing performance while minimising the negative consequences of operating within a congested or contested electromagnetic environment. This thesis concerns the development of methodologies and frameworks through which multistatic radar system performance in the aforementioned radar modalities may be measured, analysed, and compared. A combination of experimental and simulation-based approaches are used to implement the developed frameworks to gain an understanding of the relationship between radar performance and radar type, topology, and system attributes for a selection of different multistatic radar architectures. Comparisons are made between the efficacy of systems capable of data fusion at different levels to perform detection and target classification. This includes the development of data fusion algorithms and their subsequent analysis. Furthermore, studies into the location and velocity estimation capabilities of both single-transmitter-multiple-receiver radar systems and hybrid radar systems are carried out. This includes the development of a geometry-based heuristic for achieving a quantitative measure of the parameter estimate uncertainty via the ambiguity function and the Cramér-Rao Lower Bounds which provide a measure of the uncertainty of range and radial velocity estimates. For each of the three modalities of interest, performance within different contested environments is reported. This is achieved using a selection of models to simulate the effects of electronic countermeasures at different stages within the radar processing chain.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Ph.D |
| Title: | RF sensor fusion in congested and contested electromagnetic environments |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| Additional information: | Copyright © The Author 2024. Original content in this thesis is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Licence (https://creativecommons.org/licenses/by-nc/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author’s request. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10195545 |
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