A new approach for near-field wideband synthetic aperture beamforming.
A coarray-based synthetic aperture beamformer using stepped-frequency signal synthesis and post-data acquisition processing is presented for wideband imaging of near-field scenes. The proposed beamformer formulation and implementation finds key applications in through-the-wall microwave imaging and landmine detection problems. While coarray techniques offer significant reduction in array elements for a given angular resolution, stepped-frequency realization of wideband systems simplifies implementation and offers flexibility in beamforming. Proof of concept is provided using real data collected in an anechoic chamber.
|Main Author:||Ahmad, Fauzia.|
|Other Authors:||Frazer, Gordon J., Kassam, Saleem A., Amin, Moeness G.|
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