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- Title
Intelligent electromagnetic metasurface camera: system design and experimental results.
- Authors
Wang, Zhuo; Zhang, Hongrui; Zhao, Hanting; Cui, Tie Jun; Li, Lianlin
- Abstract
(ii) HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>P</mi><mi> </mi></msub><mrow><mo>(</mo><mrow><msub><mi>s</mi><mi>t</mi></msub><mo>|</mo><msub><mi>s</mi><mo><=</mo><mi>t</mi><mo>-</mo><mn>1</mn></msub></mrow><mo>)</mo></mrow></mrow></math> ht is modeled with so-called Brown motion [[6], [20]]; (iii) HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>P</mi><mi> </mi></msub><mo>(</mo><msub><mi>o</mi><mi>t</mi></msub><mo>|</mo><msub><mi>s</mi><mi>t</mi></msub><mo>,</mo><msub><mi> </mi><mi>t</mi></msub><mo>)</mo></math> ht is represented with a physical-model-based neural network, i.e., HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>P</mi><mi> </mi></msub><mo>(</mo><msub><mi>o</mi><mi>t</mi></msub><mo>|</mo><msub><mi>s</mi><mi>t</mi></msub><mo>,</mo><msub><mi> </mi><mi>t</mi></msub><mo>)</mo><mo>=</mo><mi mathvariant="script">N</mi><mo>(</mo><msub><mi>o</mi><mi>t</mi></msub><mo>|</mo><msub><mi mathvariant="script">A</mi><msub><mi> </mi><mi>t</mi></msub></msub><msub><mi>s</mi><mi>t</mi></msub><mo>,</mo><msup><mi> </mi><mn>2</mn></msup><mi>I</mi><mo>)</mo></mrow></math> ht , where HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="script">A</mi><msub><mi> </mi><mi>t</mi></msub></msub></math> ht is a linear operator defined through Eq. (4), and HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi> </mi><mn>2</mn></msup></math> ht is a trainable parameter. Before closing this section, we give more details about the U-net network modeling HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>f</mi><mi> </mi></msub></math> ht , as shown in Figure 1d.
- Subjects
SYSTEMS design; DIGITAL communications; DEEP learning; SYNTHETIC aperture radar; MILITARY engineering; EXPERIMENTAL design; MICROWAVE imaging; CAMERAS
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 9, p2011
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0665