High-Resolution Imaging Utilizing Space-Frequency DORT Combining the Extrapolated Virtual Array
AUTOR(ES)
Du, Qiang, Song, Yaoliang, Mu, Tong, Ahmad, Zeeshan
FONTE
J. Microw. Optoelectron. Electromagn. Appl.
DATA DE PUBLICAÇÃO
2017-09
RESUMO
Abstract Space-frequency DORT (SF-DORT) is an effective time-reversal (TR) imaging method due to its immunity to the noise and adaptability of complex environment. However, some potential drawbacks, such as low range and co-range resolutions, make SF-DORT inferior to the Space-frequency MUSIC (SF-MUSIC). In this paper, we propose a novel high-resolution imaging method utilizing SF-DORT combining an extrapolated virtual array (EASF-DORT). The virtual extrapolated TR array is created by autoregressive vector extrapolation (ARVE). In this way, the aperture of the TR array is extended significantly and the drawbacks associated with SF-DORT can be improved. Simulation results demonstrate that SF-DORT combining the extrapolated virtual array achieve much higher range and co-range resolutions than conventional SF-DORT.
Documentos Relacionados
- Time Reversal Imaging Based on the Space-Frequency ESPRIT
- Single-molecule high-resolution imaging with photobleaching
- High-resolution vessel wall imaging in human neurocysticercosis with leptomeningitis
- High-resolution computed tomography.
- High-resolution optical imaging of functional brain architecture in the awake monkey.