Joint radar and communications (RadCom) techniques for airborne systems
dc.contributor.advisor
Arslan, Tughrul
dc.contributor.advisor
Safari, Majid
dc.contributor.advisor
Ratnarajah, Tharmalingam
dc.contributor.author
Lavery, Samuel P.
dc.date.accessioned
2025-07-18T10:05:31Z
dc.date.available
2025-07-18T10:05:31Z
dc.date.issued
2025-07-18
dc.description.abstract
This thesis examines joint radar and communications (RadCom) techniques for airborne systems. This is motivated by a convergence of radar (remote sensing) and wireless communications technologies, which have historically been separate in terms of hardware, deployment and processing techniques. A particular waveform that prompts interest is the orthogonal frequency-division multiplexing (OFDM) waveform, which is prevalent in modern wireless communications networks. This thesis reviews the literature and remarks on my contributions to remote sensing through exploiting OFDM signals using Fourier-based techniques; use of constant modulus OFDM signals in a dual-function context; introduction of matrix pencil-based solutions to the target parameter estimation problem; and aspects affecting the feasibility of OFDM-based RadCom design.
The thesis is concerned with airborne systems, which motivates examination of techniques suited to the 3D geometry of a base-station observing or communicating with a target or user at a different altitude. Extension of established techniques to comply with this is presented alongside parametrisation of systems to comply with fifth generation (5G) telecommunications standards, and observation of extended targets modelled as collections of points. OFDM signals typically have a high peak-to-average-power ratio (PAPR), which hampers the ability to operate power amplifiers efficiently: an examination is undertaken of the construction and performance of constant modulus OFDM waveforms when used for remote sensing. Then, matrix pencil based techniques are examined as an alternative parameter estimation technique for performing high-precision, limited snapshot estimations on one or more targets. Various aspects of the system design are explored, such as power and performance, helping to assess the feasibility of developing deployable systems.
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dc.identifier.uri
https://hdl.handle.net/1842/43698
dc.identifier.uri
http://dx.doi.org/10.7488/era/6230
dc.language.iso
en
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dc.publisher
The University of Edinburgh
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dc.relation.hasversion
S. P. Lavery and T. Ratnarajah, “OFDM-based remote sensing utilizing the 4D modified matrix pencil method,” IEEE Transactions on Radar Systems, vol. 3, pp. 318-331, 2025
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dc.relation.hasversion
S. P. Lavery, N. Garg, and T. Ratnarajah, “OFDM-based dual function communications-radar utilizing the 4D modified matrix pencil method,” in Proc. of 2023 24th International Conference on Digital Signal Processing (DSP), Rhodes (Rodos), Greece, 2023, pp. 1-5.
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dc.relation.hasversion
S. P. Lavery and T. Ratnarajah, “Airborne phased array OFDM joint radar communications system,” in Proc. of 2022 IEEE Radar Conference (RadarConf22), New York City, NY, USA, 2022, pp. 1-6.
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dc.subject
radar
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dc.subject
communications
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dc.subject
OFDM
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dc.subject
5G NR
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dc.subject
MEMP
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dc.subject
RadCom
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dc.subject
DFRC
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dc.title
Joint radar and communications (RadCom) techniques for airborne systems
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dc.type
Thesis or Dissertation
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dc.type.qualificationlevel
Doctoral
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dc.type.qualificationname
PhD Doctor of Philosophy
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