Dreamer: Dual-RIS-aided Imager in Complementary Modes Article Swipe
Fuhai Wang
,
Yunlong Huang
,
Zhiyong Feng
,
Rujing Xiong
,
Zhe Li
,
Chun Wang
,
Tiebin Mi
,
Robert C. Qiu
,
Zenan Ling
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2407.14820
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2407.14820
Reconfigurable intelligent surfaces (RISs) have emerged as a promising auxiliary technology for radio frequency imaging. However, existing works face challenges of faint and intricate back-scattered waves and the restricted field-of-view (FoV), both resulting from complex target structures and a limited number of antennas. The synergistic benefits of multi-RIS-aided imaging hold promise for addressing these challenges. Here, we propose a dual-RIS-aided imaging system, Dreamer, which operates collaboratively in complementary modes (reflection-mode and transmission-mode). Dreamer significantly expands the FoV and enhances perception by deploying dual-RIS across various spatial and measurement patterns. Specifically, we perform a fine-grained analysis of how radio-frequency (RF) signals encode scene information in the scattered object modeling. Based on this modeling, we design illumination strategies to balance spatial resolution and observation scale, and implement a prototype system in a typical indoor environment. Moreover, we design a novel artificial neural network with a CNN-external-attention mechanism to translate RF signals into high-resolution images of human contours. Our approach achieves an impressive SSIM score exceeding 0.83, validating its effectiveness in broadening perception modes and enhancing imaging capabilities. The code to reproduce our results is available at https://github.com/fuhaiwang/Dreamer.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2407.14820
- https://arxiv.org/pdf/2407.14820
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4406072264
All OpenAlex metadata
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https://openalex.org/W4406072264Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2407.14820Digital Object Identifier
- Title
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Dreamer: Dual-RIS-aided Imager in Complementary ModesWork title
- Type
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-07-20Full publication date if available
- Authors
-
Fuhai Wang, Yunlong Huang, Zhiyong Feng, Rujing Xiong, Zhe Li, Chun Wang, Tiebin Mi, Robert C. Qiu, Zenan LingList of authors in order
- Landing page
-
https://arxiv.org/abs/2407.14820Publisher landing page
- PDF URL
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https://arxiv.org/pdf/2407.14820Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
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https://arxiv.org/pdf/2407.14820Direct OA link when available
- Concepts
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Dual (grammatical number), Computer science, Remote sensing, Geology, Philosophy, LinguisticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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