A Priori Solar Radiation Pressure Model for BeiDou-3 MEO Satellites
AbstractDue to the cuboid satellite body of BeiDou-3 satellites, the accuracy of their orbit showed a trend of systematic variation with the sun-satellite-earth angle (ε) using the Extend CODE Orbit Model (ECOM1). Therefore, an a priori cuboid box-wing model (named the cuboid model) is necessary to compensate ECOM1. Considering that the body-dimensions and optical properties of the BeiDou-3 satellites used to construct the box-wing model have not yet been fully released, the adjustable box-wing model (ABW) was used for precise orbit determination (POD). The a priori cuboid box-wing model was directly estimated by the precision radiation accelerations, obtained from ABW POD. When using ECOM1 model, for 14 < β < 40°, a linear systematic variation of D0 related to the elevation of the sun above the orbital plane (β-angle) with a slope of 0.048 nm/s2/°, was found for C30. After adding the cuboid model to assist ECOM1 (named Cuboid + ECOM1), the slope was reduced to 0.005 nm/s2/°, and for C20 satellite, the standard deviation (STD) of D0 was improved, from 1.28 to 0.85 nm/s2 (34%). For satellite laser ranging (SLR) validation, when using the ECOM1 model, the systematic variation with the ε angle was about 14 cm for C20 and C30. After using the Cuboid + ECOM1 model, the variation was significantly reduced to about 5 cm. For C20 and C21, compared with the ECOM1 model, the root mean square (RMS) of the ECOM2 and Cuboid + ECOM1 model was improved by about 0.54 (10.3%) and 0.43 cm (8.7%). For C29 and C30, the RMS of ECOM2 and Cuboid + ECOM1 model was improved for about 0.7 (10.9%) and 1.6 cm (25.6%). Finally, the RMS of the SLR residuals of 4.37 to 4.88 cm was achieved for BeiDou-3 POD. View Full-Text
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Yan, X.; Liu, C.; Huang, G.; Zhang, Q.; Wang, L.; Qin, Z.; Xie, S. A Priori Solar Radiation Pressure Model for BeiDou-3 MEO Satellites. Remote Sens. 2019, 11, 1605.
Yan X, Liu C, Huang G, Zhang Q, Wang L, Qin Z, Xie S. A Priori Solar Radiation Pressure Model for BeiDou-3 MEO Satellites. Remote Sensing. 2019; 11(13):1605.Chicago/Turabian Style
Yan, Xingyuan; Liu, Chenchen; Huang, Guanwen; Zhang, Qin; Wang, Le; Qin, Zhiwei; Xie, Shichao. 2019. "A Priori Solar Radiation Pressure Model for BeiDou-3 MEO Satellites." Remote Sens. 11, no. 13: 1605.
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