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Imaging and Sensing (Optimization) Seminar

October 4, 2022 - 3:00pm

Speaker: Jacqueline Alvarez

Title: Synthetic aperture radar inverse scattering reconstruction using convolutional neural networks

Abstract: We address the reconstruction of synthetic aperture radar (SAR) images using machine learning. From previous work, we utilize a single, fully-connected layer to learn the sensing matrix of the forward scattering problem. We estimate the reflectivity of the SAR measurements by applying the conjugate transpose of the learned sensing matrix to the SAR measurements. We further improve the reconstructions of the reflectivity using convolutional layers. The model is trained to reconstruct images containing a single target but can be applied to data containing multiple targets without additional training. Resulting reconstructions are sharper images, where the background noise is significantly decreased.