A5068767171- Advanced Algorithms and Applications
- Advanced Clustering Algorithms Research
- Face and Expression Recognition
- Noise Effects and Management
- Blind Source Separation Techniques
- Metamaterials and Metasurfaces Applications
- Image Retrieval and Classification Techniques
- Elevator Systems and Control
- Acoustic Wave Phenomena Research
Xi’an University of Posts and Telecommunications
2023
Tongji University
2021
Institute of Acoustics
2021
In this paper, based on the partial discharge ultrasonic signals of four typical types needle plate discharge, internal suspension and creeping in switchgear, time-frequency diagram signal is obtained by using short-time Fourier transform, used sparse representation algorithm. The classification performed to quickly accurately determine whether a has occurred which type it belongs to. process method, orthogonal matching pursuit method accelerated near-end gradient are solve solution...
Abstract Conventional acoustic metasurfaces are constructed with gradiently "local" phase shift profiles provided by subunits. The local strategy implies the ignorance of mutual coupling between subunits, which limits efficiency targeted sound manipulation, especially in complex environments. By taking into account "nonlocal" interaction among nonlocal metasurface offers an opportunity for accurate control propagation, but requirement consideration gathering all not just nearest-neighbor...