Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 5, pp. 65-74
Basic catalogue of stars for spacecraft orientation sensors
G.A. Avanesov
1 , N.I. Snetkova
1 , N.A. Stroilov
1 , O.V. Filippova
1 , V.A. Shamis
1 , Ya.D. Elyashev
1 , B.A. Yumatov
1 1 Space Research Institute RAS, Moscow, Russia
Accepted: 04.10.2019
DOI: 10.21046/2070-7401-2019-16-5-65-74
Constantly increasing requirements for improving the accuracy of angular measurements in stellar orientation sensors forced to reconsider the approaches to the formation of their on-board catalogues of stars. It became necessary to take into account the peculiarities of the nearest vicinity of catalogue stars. For this, on the basis of the Hipparcos and Gaia star catalogues, about 11,000 micro-catalogues were compiled around the brightest stars in the celestial sphere. Each of them contains in the center one star with a magnitude of up to 7.8m and all surrounding stars up to 13m within a radius of 15ʹ. The micro-catalogues are associated in the “basic catalogue of stars”, which in the near future will be used to compile the on-board catalogues of the stars of the orientation sensors of the spacecraft of the BOKZ family. To work with the base catalogue, special mathematical software was developed to visualize its fragments and compile lists of stars with given parameters. The computational and analytical part of the program contains mathematical models of the star orientation sensors of the BOKZ family, as well as a mathematical apparatus that allows to model in detail the most subtle elements of data processing on board. The article provides a brief description of the onboard catalogue, and also illustrates how to work with it using specially designed programs for this purpose.
Keywords: star tracker, astrometry, stars catalogue, systematic error, random error, background radiation, neighborhood of catalogue stars, centroidal method, catalogue correction
Full textReferences:
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