Abstract
Compared with the deepening development of time-space coding metasurfaces in the electromagnetic and acoustic field, the research on time-space coding metasurface in the field of elastic vibration is still in the infancy. In order to enrich the designed schemes of spatiotemporal coding for elastic vibration, a time-space coding metasurface based on the random modulation strategy of wavefront phase is proposed in this paper. Compared with traditional homogeneous materials with highly correlated vibration transmission, the proposed coding metasurfaces with homogeneous materials realizes extremely low correlated vibration transmission in different vibration directions, which provides a physical realization for the measurement matrix in compression sensing. Furthermore, combined with compressed sensing technology, the potential application value of the proposed time-space coding metasurfaces in single-sensor vibration location and impact identification is verified through simulation.
| Original language | English |
|---|---|
| Article number | 012046 |
| Journal | Journal of Physics: Conference Series |
| Volume | 2425 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2022 |
| Event | 2022 International Conference on Scientific Computation and Applied Statistics, ICSCAS 2022 - Wuhan, Virtual, China Duration: 12 Nov 2022 → … |
Keywords
- Compressed Sensing
- Impact Identification
- Phase Modulation
- Time-Space Coding Metasurfaces
- Vibration Location