1994/01/01 by Ti-Pei Li, Ti -Pei Li, Mei Wu · 2 citations
Engineering · Mathematics · Medicine · Physics and Astronomy · #Medical Imaging Techniques and Applications #Microwave Imaging and Scattering Analysis #Numerical methods in inverse problems #astro-ph
paper · pdf · doi:10.1007/bf00660079
published as Astrophys.Space Sci. 215 (1994) 213-227 · 11 pages, 6 figures
openalex publication_date 1994/01/01 · arxiv created 2005/03/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
High resolution reconstruction of complicated objects from incomplete and noisy data can be achieved by solving modulation equations iteratively under physical constraints. This direct demodulation method is a powerful technique for dealing with inverse problem in general case. Spectral and image restorations and computerized tomography are only particular cases of general demodulation. It is possible to reconstruct an object in higher dimensional space from observations by a simple lower dimensional instrument through direct demodulation. Our simulations show that wide field and high resolution images of space hard X-rays and soft gamma rays can be obtained by a collimated non-position-sensitive detector without coded aperture masks.