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University Satellites and Space Science Education '2006

University Satellites and
Space Science Education 

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Practical Training for Students in Simulated Satellite Navigation and Attitude Determination for Universitetskiy-Tatyana Satellite - an Overview
Kozlov A.V., Golovan A.A., Vavilova N.B., Demidov O.V., Panev A.A.,

The practical training has been developed to provide a basic introduction for students into satellite navigation, satellite motion in space, Kepler orbits, and computational techniques involved in dealing with problems of navigation. This introduction takes the Universitetskiy-Tatyana satellite as an example for simulation process. Theoretical material of the training includes several topics such as basics of celestial mechanics, Kepler s laws, including applicable formulae for a satellite orbit calculation, description of reference systems used in satellite navigation, general approaches to positioning using satellite navigation systems, a general description and functionality of these systems (GPS and GLONASS), observables obtained from GPS and GLONASS satellites, and finally iterative least-squares solution. A general overview on the errors of satellite navigation observables due to signal propagation through space is given. Practical simulation includes visualization of the motion of satellites and its orbits, the constellation used for navigation, modeling the satellite navigation observables and least-squares solution. All the quantities used in simulation are very close to those appearing in reality. For example, all ephemeris data is being taken from a standard RINEX files recorded during field surveys. Also the technique for satellite trajectory propagation (orbital prognosis) is shown. Unfortunately, the actual telemetry data is not available as yet from the Universitetskiy-Tatyana satellite. Use of the actual data could be of great interest for the practical training. In order to provide more profound introduction into satellite navigation techniques several feasible exercises have been proposed. References are given also to allow consulting an additional material.





Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2005-2006