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7
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vol 63 / July, 2020
Article

DOI 10.17586/0021-3454-2018-61-7-590-595

UDC 629.7

METHOD OF IMPROVEMENT OF NAVIGATION AND BALLISTIC SUPPORT ACCURACY FOR SPACECRAFTS EQUIPPED WITH HIGH-SENSITIVE ACCELEROMETER UNITS

V. B. Dubovskoy
Schmidt Institute of Physics of the Earth of the RAS; Head of Research Section


K. V. Kislenko
Research and Production Corporation “Precision Instrument Engineering Systems” JSC; Deputy Head of Research Sector – Head of Department


V. G. Pshenyanik
А. A. Maksimov Space Systems Research Institute − Branch of Khrunichev State Research and Production Space Center JSC; Senior Scientist, Deputy Head of Department


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Abstract. A method for determining motion parameters of low-orbit spacecraft is presented. The approach is based on joint use of high-sensitive accelerometers measurement data and information from the satellite navigation equipment. Methodical aspects of the use of these high-sensitive accelerometers are considered for the case of the presence of navigation equipment measurements as well as for intervals of orbital parameters forecast. Estimated accuracy of definition and forecasting of orbital motion parameters of space vehicles with the use of proposed technique with the account for technical characteristics of highsensitive accelerometers are compared with results obtained with traditionally applied methods of navigating problems solution. Limitations are formulated for the field of high-sensitive accelerometers application in low-orbit spacecrafts to guarantee the accuracy of navigation problems solutions. The presented results confirm the possibility to improve the accuracy of solving the problems of navigational support of flight control of space vehicles and the quality of target information processing.
Keywords: low-orbit spacecraft, sensitive accelerometer unit, mass center movement parameters, atmospheric deceleration, determining and forecasting of spacecraft orbital motion parameters

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