Abstract
Chang’E-4 will be the first to achieve a soft landing on the far-side of the moon. The tracking and data transmission for Chang’E-4 will depend on a relay satellite on a Lissajous orbit around the Earth–Moon L2 point, and the four-way ranging measurement is expected to be obtained. The capability of orbit determination for Chang’E-4 is studied by simulation. The results show that the relay satellite can realize a near full time tracking for lunar probe. In terms of the orbit determination capability, the orbital accuracy of relay satellite is an important constraint. Once the tracking arc reaches 5 h, the orbit solution for lunar probe tends to be stable. However, the orbital accuracy is still one order of magnitude lower than that of relay satellite. For inter-satellite tracking, the stability of the satellite clock is another constraint. With 1 h auxiliary ground station tracking every day, an orbital accuracy of 100 m can be achieved.
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© 2018 Tsinghua University Press, Beijing and Springer Nature Singapore Pte Ltd.
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Cao, J., Liu, L., Liu, Y., Su, W., Hu, S. (2018). A Simulation Study of Orbit Determination for Lunar Probe via Relay Satellite. In: Shen, R., Dong, G. (eds) Proceedings of the 28th Conference of Spacecraft TT&C Technology in China. TT&C 2016. Lecture Notes in Electrical Engineering, vol 445. Springer, Singapore. https://doi.org/10.1007/978-981-10-4837-1_12
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DOI: https://doi.org/10.1007/978-981-10-4837-1_12
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