Impact of GPS Antenna Phase Center Variations on Precise Orbit Determination of the GRACE Satellites
Abstract We use onboard GPS data of GRACE satellites to research the impact of the priori phase center variations(PCV) model by ground calibration and in-flight PCV model, estimated by the residual method. The orbit accuracy is assessed by GFZ precision orbits comparison and SLR checkout. The results show that using prior PCV models can reduce orbit determination accuracy, but using in-flight PCV model can improve the orbit determination accuracy(mm level).
Key words :
phase center variations
precision orbit determination
GRACE satellites
PCV model
Cite this article:
CHEN Meng,MENG Ruizu,YUAN Junjun. Impact of GPS Antenna Phase Center Variations on Precise Orbit Determination of the GRACE Satellites[J]. jgg, 2019, 39(1): 20-24.
CHEN Meng,MENG Ruizu,YUAN Junjun. Impact of GPS Antenna Phase Center Variations on Precise Orbit Determination of the GRACE Satellites[J]. jgg, 2019, 39(1): 20-24.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2019/V39/I1/20
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