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Satellite orbit determination combining C-band ranging and differenced ranges by transfer |
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| Authors: | Ying Yang XuHai Yang ZhiGang Li ChuGang Feng |
| Institution: | 15871. National Time Service Center, Chinese Academy of Sciences, Xi’an, 710600, China 25871. Key Laboratory for Precise Navigation, Positioning and Timing of Chinese Academy of Sciences, Xi’an, 710600, China 35871. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China 45871. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030, China |
| Abstract: | The constraint in the transverse direction of satellite orbit with differenced ranges between master station and slave stations by transfer as an angular observation data is explained in theory. Differenced ranges in combination with C-band ranging by transfer were used in satellite orbit determination. The position error of overlapped orbit differences for combining is less than that for ranging only. The residual of predicted orbit forward 5.5 days for combining is 3.1762 m, while the residual for ranging only with the same duration is 3.5380 m. Both the orbital overlapping and orbit prediction experimentations can testify the constraint in the transverse direction of satellite orbit with differenced ranges, and the results show that the accuracy of orbit determination and orbit prediction is improved by combining differenced ranges and C-band ranging. |
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