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Imaging experiments...
Imaging experiments with a 340-GHz FMCW radar and frequency-diverse holograms
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- Pälli, Samu Ville (författare)
- Aalto-Yliopisto,Aalto University
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- Tamminen, Aleksi (författare)
- Aalto-Yliopisto,Aalto University
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- Hiltunen, Paavo (författare)
- Aalto-Yliopisto,Aalto University
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visa fler...
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- Rexhepi, Sazan (författare)
- Aalto-Yliopisto,Aalto University
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- Bonmann, Marlene, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bryllert, Tomas, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Robertson, D. A. (författare)
- University of St Andrews
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- Ala-Laurinaho, Juha (författare)
- Aalto-Yliopisto,Aalto University
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- Stake, Jan, 1971 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Taylor, Zachary (författare)
- Aalto-Yliopisto,Aalto University
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Proceedings of SPIE - The International Society for Optical Engineering. - 0277-786X .- 1996-756X. ; 12535
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- neural network
- Hologram
- FMCW radar
- submillimeter-wave
- imaging
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Till lärosätets databas
- Av författaren/redakt...
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Pälli, Samu Vill ...
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Tamminen, Aleksi
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Hiltunen, Paavo
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Rexhepi, Sazan
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Bonmann, Marlene ...
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Bryllert, Tomas, ...
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visa fler...
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Robertson, D. A.
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Ala-Laurinaho, J ...
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Stake, Jan, 1971
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Taylor, Zachary
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Signalbehandling
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Annan elektrotek ...
- Artiklar i publikationen
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Proceedings of S ...
- Av lärosätet
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Chalmers tekniska högskola