Dataset Information


Large Metasurface Aperture for Millimeter Wave Computational Imaging at the Human-Scale.

ABSTRACT: We demonstrate a low-profile holographic imaging system at millimeter wavelengths based on an aperture composed of frequency-diverse metasurfaces. Utilizing measurements of spatially-diverse field patterns, diffraction-limited images of human-sized subjects are reconstructed. The system is driven by a single microwave source swept over a band of frequencies (17.5-26.5?GHz) and switched between a collection of transmit and receive metasurface panels. High fidelity image reconstruction requires a precise model for each field pattern generated by the aperture, as well as the manner in which the field scatters from objects in the scene. This constraint makes scaling of computational imaging systems inherently challenging for electrically large, coherent apertures. To meet the demanding requirements, we introduce computational methods and calibration approaches that enable rapid and accurate imaging performance.


PROVIDER: S-EPMC5316995 | BioStudies | 2017-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

1000-01-01 | S-EPMC4735857 | BioStudies
2015-01-01 | S-EPMC4686760 | BioStudies
1000-01-01 | S-EPMC6119926 | BioStudies
1000-01-01 | S-EPMC5817919 | BioStudies
1000-01-01 | S-EPMC6212528 | BioStudies
2019-01-01 | S-EPMC7597901 | BioStudies
2016-01-01 | S-EPMC4866766 | BioStudies
2011-01-01 | S-EPMC3226868 | BioStudies
2020-01-01 | S-EPMC7188898 | BioStudies
1000-01-01 | S-EPMC4476044 | BioStudies