Projekteja vuodessa
Abstrakti
We present recent developments of a standoff imaging system based on a frequency-diverse phase hologram and deep neural networks. The single-pixel imaging system operates in a monostatic configuration consisting of a 340-GHz FMCW radar and a frequency-diverse phase hologram to interrogate the radar down range direction with spatially varying, frequency-dependent field patterns. The measured back-reflected signal contains spatial reflectivity information from the target, and the fast chirp rate of the radar enables real-time imaging performance. Together with simultaneously acquired visible-light images, a deep neural network integrated into the submillimeter-wave data readout electronics can map the received signal onto a 2D image without mechanical or active electrical beam scanning. In experiments, we have collected submillimeter-wave and visible-light data of a moving target in the region of interest with a 60-Hz frame rate. The results suggest that the system can image the moving target with a resolution comparable to the theoretical diffraction limit. The minimal hardware complexity and good imaging performance of the demonstrated computational submillimeter-wave imaging system support its potential as a cost-effective and easily deployable solution for various imaging applications.
Alkuperäiskieli | Englanti |
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Otsikko | Radar Sensor Technology XXVII |
Toimittajat | Abigail S. Hedden, Gregory J. Mazzaro, Ann Marie Raynal |
Kustantaja | SPIE |
ISBN (elektroninen) | 978-1-5106-6184-4 |
ISBN (painettu) | 978-1-5106-6184-4 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2023 |
OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisussa |
Tapahtuma | Radar Sensor Technology - Orlando, Yhdysvallat Kesto: 1 toukok. 2023 → 3 toukok. 2023 |
Julkaisusarja
Nimi | Proceedings of SPIE - The International Society for Optical Engineering |
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Vuosikerta | 12535 |
ISSN (painettu) | 0277-786X |
ISSN (elektroninen) | 1996-756X |
Conference
Conference | Radar Sensor Technology |
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Maa/Alue | Yhdysvallat |
Kaupunki | Orlando |
Ajanjakso | 01/05/2023 → 03/05/2023 |
Sormenjälki
Sukella tutkimusaiheisiin 'Imaging experiments with a 340-GHz FMCW radar and frequency-diverse holograms'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
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R2B-MilliScan: Aalto-R2B-MilliScan
Taylor, Z. (Vastuullinen tutkija), Tamminen, A. (Projektin jäsen), Rexhepi, S. (Projektin jäsen), Pälli, S.-V. (Projektin jäsen), Ala-Laurinaho, J. (Projektin jäsen), Patel, J. (Projektin jäsen), Gamaethige, S. (Projektin jäsen) & Shao, S. (Projektin jäsen)
01/01/2022 → 30/06/2023
Projekti: Business Finland: New business from research ideas (TUTLI)