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Combining Harmonic and Intermodulation Returns for Ranging with Dual-Mode Harmonic Radar
Swärd, H.Y.I. (2025) Combining Harmonic and Intermodulation Returns for Ranging with Dual-Mode Harmonic Radar.
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| Full Text Status: | Access to this publication is restricted |
| Embargo date: | 31 July 2027 |
| Abstract: | Harmonic radars utilize non-linear tags to track small objects or organisms in cluttered environments. The non-linear tag returns a harmonic of the transmitted pulse, differentiating it from other reflections. Including one or more auxiliary single-tone transmitters with a different frequency can increase the detection range by enabling the tag to also generate a return at an intermodulation frequency. The novelty of this research lies in combining both returns into a single range estimate for increased ranging performance. An optimal receiver for combining returns and a less complex sub-optimal receiver were tested. Simulations showed both receivers performed about as well as or better than the best single return estimator. The simulation results were supported by field measurements, where the tag was moved between the radar and the auxiliary transmitter. Both receivers closely followed the performance of the best single estimator, with the sub-optimal receiver slightly outperforming the optimal one due to real-world non-idealities. This led to the conclusion that the less complex sub-optimal estimator is the best fit for dual-mode harmonic radars in most situations. |
| Item Type: | Essay (Bachelor) |
| Faculty: | EEMCS: Electrical Engineering, Mathematics and Computer Science |
| Subject: | 50 technical science in general, 53 electrotechnology |
| Programme: | Electrical Engineering BSc (56953) |
| Link to this item: | https://purl.utwente.nl/essays/107779 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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