"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 8, 2016

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Usage of optical-geometrical modeling for supervising space objects


V. R. Akhmetianov, I. O. Lutov, M.I . Oleinikov

Military-space academy by name A.F. Mozhaisky


The paper is received on June 14, 2016


Abstract. In the article the problems of usage of optical-geometrical modeling for definition of the dimensional and reflective characteristics of spacecraft are considered, which one after ending term of fissile existence pass in the category of space debris and require continuous supervising and check, including, ground-level optical-electronic means. The optical-geometrical model includes the geometrical description of spacecraft as three-dimensional body composed from functional - constructive elements (FCE), and optical characteristics of materials and covers FCE.

For a number of spacecraft there are source specific data representing digital photographic images, which one are presented by the developers at a stage of assembly and test operations. The relative geometrical performances of spacecraft can be received from analysis of the digital image. With this purpose it is offered to use the compact alphabet of the geometrical description of the contour pattern of a construction of spacecraft by the way collections of primitives mapped on the source image with allowance for of properties of a central projection of object of supervising on a picture plain.

The received estimations of geometrical arguments of spacecraft allow to realize analysis of his reflective characteristics with the help of a mathematical model of numerically - analytical account in a visible band, which one is based on submission of spacecraft by the way of set of geometrical primitives of conical, spherical and flat types. As the pattern of reflex of a surface the pattern of reflex of a Lambert – Fong is accepted. The definition of diffuse-reflection factors allows receiving estimations of a vector of the optical performances of structural elements of spacecraft by means of processing outcomes of ground-level photometric supervising.

The approach, offered in the article, is illustrated on an example of the image of spacecraft «Hubble Space telescope», received in 2009 during space experiment «Atlantis» STS-125.

Keywords: a spacecraft, space debris, optical-electronic means, geometrical characteristics, optical characteristics of materials and covers.


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