Feasibility study of autonomous orbit determination using only the crosslink range measurement for a combined navigation constellation |
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Authors: | Gao Youtao Xu Bo Zhang Lei |
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Institution: | College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; College of Astronomy and Space Science, Nanjing University, Nanjing 210093, China |
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Abstract: | In order to expand the coverage area of satellite navigation systems, a combined navigation constellation which is formed by a global navigation constellation and a Lagrangian navigation constellation was studied. Only the crosslink range measurement was used to achieve long-term precise autonomous orbit determination for the combined navigation constellation, and the measurement model was derived. Simulations of 180 days based on the international global navigation satellite system (GNSS) service (IGS) ephemeris showed that the mentioned autonomous orbit determination method worked well in the Earth–Moon system. Statistical results were used to analyze the accuracy of autonomous orbit determination under the influences of different Lagrangian satellite constellations. |
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Keywords: | Autonomous navigation Crosslink range Lagrange point Navigation constellation Orbit determination |
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