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Application of Accelerometer Data in Precise Orbit Determination of GRACE -A and -B
Peng DongJu1; Wu Bin1
2008
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
ISSN1009-9271
Volume8Issue:5Pages:603
AbstractWe investigate how well the GRACE satellite orbits can be determined using the onboard GPS data combined with the accelerometer data. The preprocessing of the accelerometer data and the methods and models used in the orbit determination are presented. In order to assess the orbit accuracy, a number of tests are made, including external orbit comparison, and through Satellite Laser Ranging (SLR) residuals and K-band ranging (KBR) residuals. It is shown that the standard deviations of the position differences between the so-called precise science orbits (PSO) produced by GFZ, and the single-difference (SD) and zero-difference (ZD) dynamic orbits are about 7 cm and 6 cm, respectively. The independent SLR validation indicates that the overall root-mean-squared (RMS) errors of the SD solution for days 309 - 329 of 2002 are about 4.93 cm and 5.22 cm, for GRACE-A and B respectively; the overall RMS errors of the ZD solution are about 4.25 cm and 4.71 cm, respectively. The relative accuracy between the two GRACE satellites is validated by the KBR data to be on a level of 1.29 cm for the SD, and 1.03 cm for the ZD solution.
KeywordGPS celestial mechanics ephemerides methods: numerical
Language英语
Funding Project[National Natural Science Foundation of China] ; [National High-tech Program of China] ; [Science & Technology Commission of Shanghai Municipality]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/60468
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.中国科学院
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Peng DongJu,Wu Bin. Application of Accelerometer Data in Precise Orbit Determination of GRACE -A and -B[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2008,8(5):603.
APA Peng DongJu,&Wu Bin.(2008).Application of Accelerometer Data in Precise Orbit Determination of GRACE -A and -B.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,8(5),603.
MLA Peng DongJu,et al."Application of Accelerometer Data in Precise Orbit Determination of GRACE -A and -B".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 8.5(2008):603.
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