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- Title
Machine–learning-enabled metasurface for direction of arrival estimation.
- Authors
Huang, Min; Zheng, Bin; Cai, Tong; Li, Xiaofeng; Liu, Jian; Qian, Chao; Chen, Hongsheng
- Abstract
For one-dimensional DOA detection, i.e., HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mi> </mi><mo>=</mo><msup><mn>0</mn><mo>°</mo></msup></math> ht , the incident signal can be rewritten as HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>P</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">c</mi></msub><mo>=</mo><msup><mi mathvariant="normal">e</mi><mi mathvariant="normal">i</mi><mi>k</mi><mi>x</mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">n</mi><mi> </mi></msup></mrow></math> ht . Furthermore, to exemplify the model performance at small angles (less than HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>5</mn><mo>°</mo></msup></math> ht ), we measure the model accuracy in terms of HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi mathvariant="normal">E</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">o</mi><msub><mi mathvariant="normal">r</mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">m</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></msub><mo>=</mo><mo>|</mo><msub><mi> </mi><mi mathvariant="normal">p</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">t</mi></msub><mo>-</mo><msub><mi> </mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">u</mi><mi mathvariant="normal">e</mi></msub><mo>|</mo><mo>/</mo><msub><mi> </mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">u</mi><mi mathvariant="normal">e</mi></msub></mrow></math> ht .
- Subjects
DIRECTION of arrival estimation; PLASMONICS; LINEAR antenna arrays; ELECTRONIC control; VARACTORS; OPTICAL dispersion
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 9, p2001
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0663