Improving the spatial resolution of digital holograms using one-dimensional subpixel scanning

The article considers the issue of increasing spatial resolution during registration digital holograms. In practice, discretization is carried out by measuring signal samples using sensors with a certain finite aperture. determined size aperture area over which averaging takes place. enhancement method based on sampling equation for signals obtained subpixel shift generalized functions. A value less than element resolution. Apertures various shapes are used, example, elliptical, diamond-shaped, hexagonal, but rectangular apertures most commonly used. involves use two-dimensional function. Below way to increase when one-dimensional This can be done structure holographic signal. this case, you in only one direction. Digital holography distinguished fact that photodetector matrices have much lower photographic media used traditional methods register signal,. Therefore, uses optical schemes small angles between interfering beams. However, restrictions imposed shape objects under study. If significantly different from flat one, it necessary schemes. presents mathematical modeling recovery real hologram usual way. achieved shift. makes possible simplify scheme setup.