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© 2017 Springer-Verlag GmbH Germany It has been noted that the satellite laser ranging (SLR) residuals of the Quasi-Zenith Satellite System (QZSS) Michibiki satellite orbits show very marked dependence on the elevation angle of the Sun above the orbital plane (i.e., the (Formula presented.) angle). It is well recognized that the systematic error is caused by mismodeling of the solar radiation pressure (SRP). Although the error can be reduced by the updated ECOM SRP model, the orbit error is still very large when the satellite switches to orbit-normal (ON) orientation. In this study, an a priori SRP model was established for the QZSS Michibiki satellite to enhance the ECOM model. This model is expressed in ECOM’s D, Y, and B axes (DYB) using seven parameters for the yaw-steering (YS) mode, and additional three parameters are used to compensate the remaining modeling deficiencies, particularly the perturbations in the Y axis, based on a redefined DYB for the ON mode. With the proposed a priori model, QZSS Michibiki’s precise orbits over 21 months were determined. SLR validation indicated that the systematic (Formula presented.)-angle-dependent error was reduced when the satellite was in the YS mode, and better than an 8-cm root mean square (RMS) was achieved. More importantly, the orbit quality was also improved significantly when the satellite was in the ON mode. Relative to ECOM and adjustable box-wing model, the proposed SRP model showed the best performance in the ON mode, and the RMS of the SLR residuals was better than 15 cm, which was a two times improvement over the ECOM without a priori model used, but was still two times worse than the YS mode.
Author(s): Zhao Q, Chen G, Guo J, Liu J, Liu X
Publication type: Article
Publication status: Published
Journal: Journal of Geodesy
Year: 2018
Volume: 92
Issue: 2
Pages: 109-121
Print publication date: 01/02/2018
Online publication date: 14/07/2017
Acceptance date: 04/07/2017
ISSN (print): 0949-7714
ISSN (electronic): 1432-1394
Publisher: Springer Verlag
URL: https://doi.org/10.1007/s00190-017-1048-4
DOI: 10.1007/s00190-017-1048-4
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