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Improving QZSS precise orbit determination by considering the solar radiation pressure of the L-band antenna

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Abstract

Japanese Quasi-Zenith Satellite System (QZSS) consists of three inclined geosynchronous orbit (IGSO) satellites as well as a geostationary satellite. According to the QZSS metadata, the three IGSO satellites are equipped with large L-band antennas, which can be assumed as a combination of a circular cylinder and a circular truncated cone. By using the geometrical and optical properties released by the metadata, maximum accelerations of about 5.0 nm/s2, 4.5 nm/s2, and 2.2 nm/s2 can be generated by the side surface of the QZS-1 L-band antenna for the along-track, cross-track, and radial components, respectively. By introducing the so-called box-wing-hat model as an a priori one and estimating parameters of Extended CODE Orbit Model (ECOM), the performances of both precise orbit determination and precise clock estimation can be improved for IGSO satellites. With the a priori box-wing-hat model, the root mean square values of 3D orbit overlapping are 8.5 cm, 27.5 cm, 13.2 cm, and 15.3 cm for QZS-1 in yaw-steering (YS) mode, QZS-1 in orbit-normal mode, QZS-2, and QZS-4, respectively. Satellite laser ranging validation reveals that the standard deviation (STD) values of the a priori box-wing-hat model are 5.6 cm, 5.5 cm, and 5.3 cm for QZS-1 in YS mode, QZS-2, and QZS-4, which are smaller than those of ECOM, ECOM2, and the a priori box-wing model. Regarding the estimated clock offsets, overlapping STD values of smaller than 0.1 ns can be achieved for QZS-1 in YS mode, QZS-2, and QZS-4 by using the a priori box-wing-hat model. Also, the Modified Allan Deviation of the clock estimates can be improved by using the a priori box-wing-hat model for integration time longer than 2000s.

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Acknowledgements

We are very grateful to the International GNSS Service (IGS) and the International Laser Ranging Service (ILRS) for providing GNSS and SLR observation data. This study is financially supported by the National Natural Science Foundation of China (Grant No. 41774030), the Hubei Province Natural Science Foundation of China (Grant No. 2018CFA081), and the National Youth Thousand Talents Program.

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Correspondence to Xingxing Li.

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Yuan, Y., Li, X., Zhu, Y. et al. Improving QZSS precise orbit determination by considering the solar radiation pressure of the L-band antenna. GPS Solut 24, 50 (2020). https://doi.org/10.1007/s10291-020-0963-7

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  • DOI: https://doi.org/10.1007/s10291-020-0963-7

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