David R. Gerwe, J. J. Dolne, (Boeing Phantomworks Space & Intelligence Systems), Peter N. Crabtree, (United States Air Force Research Labs), Richard B. Holmes, Brandoch Calef, (Boeing Laser and Technical Services)
Keywords: Imaging
Abstract:
A forward model based algorithm for reconstructing images from Fourier domain measurements is developed. The model accurately treats broadening of the Fourier domain sampling function resulting from finite aperture size and spectral bandwidth. The forward modeling approach also allows weighting of measurements according to their individual SNRs, and injection of a priori expectations about the object such as its support and PSD. Image quality performance of a large telescope array is analyzed as a function of collection time, array scale, and support constraint tightness. The approach is designed to enable joint processing of mixtures of intensity and amplitude interferometric measurements and conventional incoherent images, but the focus of this paper is limited to intensity interferometry. Basic structures of the object are seen to be recovered as SNR approaches 10 at DC in the Fourier domain.
Date of Conference: September 10-13, 2013
Track: Adaptive Optics