Скачать или смотреть Demonstration of superior imagery with a smaller aperture in Optical Aperture Synthesis (OAS).

Comparison of full aperture imagery (top) to half aperture imagery (bottom) using OAS. Here the State Street Bank building in Boston is viewed from Pack Monadnock in New Hampshire, which is 54.5 miles away. The left frames are of raw imagery, the middle frame is after correction of wavefront tilt errors and the right frames are of running 16-frame reconstructions. Since the full aperture is rotationally symmetric, the OAS reconstruction reduces to “Lucky Fourier” processing, where lucky regions are selected and combined based on energy of the Power Spectral Density (PSD) at each spatial frequency (top right). The half aperture reconstruction (bottom right) uses the same algorithm to synthesize the full aperture - again by selecting samples with the most energy in the PSD. The reconstruction from the half-aperture data is noticeably sharper despite the reduction in aperture area.