Beasley, Piers J.;
(2024)
Multistatic RF Sensing with Active and Passive Nodes.
Doctoral thesis (Ph.D), UCL (University College London).
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Abstract
The future of radar technology is poised for a shift away from traditional monostatic radar sensing. Emerging trends indicate a transition towards cooperative networks of spatially separated radar nodes, where both active and passive sensing is used for enhanced operating capabilities. Despite the potential advantages of such active/passive radar systems, there remains a scarcity of research addressing their design and the technologies required to enable distributed synchronisation. This thesis addresses this knowledge gap and hopes to provide information on two key technologies that can be exploited to accelerate the maturity of active/passive multistatic radar systems. A considerable proportion of this thesis focuses on using low-cost software defined radios (SDR) as a platform for developing a multi-functional radar system capable of operating using a variety of different waveforms, carrier frequencies and bandwidths. The design and calibration of a low-cost SDR based multi-functional radar system, bladeRAD, is presented in detail and the advantages and disadvantages of the SDR platform are summarised. The results of practical active and passive radar trials are analysed allowing a variety of fusion methods to be investigated for combing the heterogeneous channels of data. This research additionally delves into the suitability of off- the-shelf GNSS Disciplined Oscillators (GNSSDOs) for offering synchronisation to distributed radar nodes. This investigation involves extensive laboratory measurements to first calibrate the relative performance of three classes of co-located GNSSDOs. Followed by the development and calibration of the GNSSDO based RadSync multistatic radar synchronisation system. Novel insights into the distributed performance of two distinct radar systems are then provided, both whilst disciplined to GPS and operating in GPS-denied scenarios. In summary, this research presents novel results to demonstrate the suitability of low-cost SDRs and of-the-shelf GNSSDOs for developing the distributed active and passive radar network systems of the future.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Ph.D |
| Title: | Multistatic RF Sensing with Active and Passive Nodes |
| 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. |
| Keywords: | Multistatic radar, radar, software defined radar, software defined radio, GPSDO |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10194522 |
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