Telecommunications and Radio Engineering

ISSN for PRINT: 0040-2508

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2005, Volume63

A. V. Megn
Institute of Radio Astronomy, National Academy of Sciences of Ukraine 4, Krasnoznamennaya St., Kharkov 61002, Ukraine

S. L. Rashkovskiy
Institute of Radio Astronomy, National Academy of Sciences of Ukraine 4, Krasnoznamennaya St., Kharkov 61002, Ukraine

V. A. Shepelev
Institute of Radio Astronomy, National Academy of Sciences of Ukraine 4, Krasnoznamennaya St., Kharkov 61002, Ukraine

Model trial-and-error method used for source structure interpretation in the decameter radio-wave band are described in the article. The image is presented as a sum of elliptic components with Gaussian brightness distribution; their position, intensity, inclination, magnitude and axes relationship are adjusted in the course of model selection. To coordinate the models with experimental data, the criterion χ² is used. The main relationships for calculations, simulation algorithms, the ways of grouping and selecting solutions, the methods of error calculation are given. The characteristic features of the model selection of brightness distribution over visibility function modules measured by means of URAN interferometer system are shown using the example of 3C 338 radio galaxy.

DOI: 10.1615/TelecomRadEng.v63.i7.50 Download article, 637-654 pages

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