Mon Dec 15, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Li, Mengmeng, Han, Fei, Wang, Qianxin, Zhang, Han, Cheng, Tong, Liu, Zhen, and Shan, Shuyuan, 2025. Impact of flex power on GRACE-FO kinematic orbit accuracy and improved strategies. Measurement Science and Technology, 36(11):116307, doi:10.1088/1361-6501/ae1aa4.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025MeScT..36k6307L,
author = {{Li}, Mengmeng and {Han}, Fei and {Wang}, Qianxin and {Zhang}, Han and {Cheng}, Tong and {Liu}, Zhen and {Shan}, Shuyuan},
title = "{Impact of flex power on GRACE-FO kinematic orbit accuracy and improved strategies}",
journal = {Measurement Science and Technology},
keywords = {LEO satellite, KPOD, flex power, ambiguity resolution},
year = 2025,
month = nov,
volume = {36},
number = {11},
eid = {116307},
pages = {116307},
abstract = "{Since the GPS satellite flex power mode was modified on day 045 of 2020,
it has had a significant impact on the kinematic orbit accuracy
and ambiguity resolution performance of the Gravity Recovery and
Climate Experiment Follow-On (GRACE-FO) satellites. This study
investigates the mechanisms behind this impact. By analyzing
pseudo-range multipath and signal-to-noise ratio (SNR) data, it
was found that during flex power activation, the P2 observations
exhibited notably larger multipath errors and frequent abrupt
fluctuations, while SNR also showed fluctuations at certain
epochs, indicating a marked decline in the quality of P2
observations during this period. To address this, this study
proposes strategies for SNR-jump-assisted cycle slip detection
and pseudo-range prior precision adjustment to improve the
kinematic precise orbit determination during flex power
activation. Experimental results demonstrate that the proposed
methods significantly improve the kinematic orbit accuracy of
both float and fixed solutions for the GRACE-FO satellites,
achieving a 10\% improvement in three-dimension orbit accuracy.}",
doi = {10.1088/1361-6501/ae1aa4},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025MeScT..36k6307L},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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Mon Dec 15, F. Flechtner