Coded‐aperture x‐ or γ‐ray telescope with least‐squares image reconstruction. I. Design considerations

摘要: Reconstruction of multiplex images produced by coded‐aperture telescopes for extended sources radiation which cannot be reflected or refracted (moderate‐ to high‐energy x rays and low‐energy γ rays) can accomplished least‐squares solution an overdetermined set simultaneous equations linking the object, aperture, image. A necessary condition is that object field (an area sky) have a smaller number pixels than image recorded position‐sensitive detector, requires projection onto detector plane detector. This achieved use auxiliary completely open aperture carefully chosen size position (‘‘limiter’’) ahead coded aperature. The latter consists regularly spaced elements are made closed either randomly according some pattern, subject solubility resulting equations. It may larger under...