Thu Aug 14, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Wang, Yuanxin, Sun, Baoqi, Wang, Kan, Yang, Xuhai, Zhang, Zhe, Zhang, Minjian, and Wu, Meifang, 2025. Influences of Discontinuous Attitudes on GNSS/LEO Integrated Precise Orbit Determination Based on Sparse or Regional Networks. Remote Sensing, 17(4):712, doi:10.3390/rs17040712.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025RemS...17..712W,
author = {{Wang}, Yuanxin and {Sun}, Baoqi and {Wang}, Kan and {Yang}, Xuhai and {Zhang}, Zhe and {Zhang}, Minjian and {Wu}, Meifang},
title = "{Influences of Discontinuous Attitudes on GNSS/LEO Integrated Precise Orbit Determination Based on Sparse or Regional Networks}",
journal = {Remote Sensing},
keywords = {low-Earth-orbit satellite, precise orbit determination, global navigation satellite system, attitude, sparse network},
year = 2025,
month = feb,
volume = {17},
number = {4},
eid = {712},
pages = {712},
abstract = "{A uniformly distributed global ground network is essential for the
accurate determination of GNSS orbit and clock parameters.
However, achieving an ideal ground network is often difficult.
When limited to a sparse or regional network of ground stations,
the integration of LEO satellites can substantially enhance the
accuracy of GNSS Precise Orbit Determination (POD). In practical
processing, discontinuities with complicated gaps can occur in
LEO attitude quaternions, particularly when working with a
restricted observation network. This hampers the accuracy of
determining GNSS/LEO integrated orbits. To address this, an
investigation was conducted using data from seven LEO
satellites, including those from Sentinel-3, GRACE-FO, and
Swarm, to evaluate integrated POD performance under sparse or
regional station conditions. Particular focus was placed on
addressing attitude discontinuities. Four scenarios were
analyzed, encompassing both continuous data availability and
one-, two-, and three-hour interruptions after one hour of
continuous data availability. The results showed that the
proposed quaternion rotation matrix interpolation method is
reliable for the integrated POD of GNSSs and LEOs with strict
attitude control.}",
doi = {10.3390/rs17040712},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025RemS...17..712W},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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