Compressive Spectral Imaging via Polar Coded Aperture

摘要

A compressive spectral imager based on a polar coded aperture and a continuous variable circular bandpass filter is proposed for spinning munitions. As the imager rotates with the munition, compressive projections are sequentially captured with embedded spatial and spectral modulation. The polar coded aperture design is introduced, aiming at optimizing the sensing process. Both discrete and continuous rotation models of the proposed imager are derived and used to characterize the compressive imager. Computer simulations validate the computational models and the reconstruction algorithm.