Research Article

Phase Error Modeling and Its Impact on Precise Orbit Determination of GRACE Satellites

Figure 3

Ionosphere-free phase postfit residuals of orbit determination for GRACE satellites on January 15, 2006.
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(a) Ionosphere-free phase postfit residuals of POD without phase error model correction for GRACE A on January 15, 2006
710586.fig.003b
(b) Ionosphere-free phase postfit residuals of POD without phase error model correction for GRACE B on January 15, 2006
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(c) Ionosphere-free phase postfit residuals of POD with mean value correction of phase error model for GRACE A on January 15, 2006
710586.fig.003d
(d) Ionosphere-free phase postfit residuals of POD with mean value correction of phase error model for GRACE B on January 15, 2006
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(e) Ionosphere-free phase postfit residuals of POD with phase error model correction for GRACE A on January 15, 2006
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(f) Ionosphere-free phase postfit residuals of POD with phase error model correction for GRACE B on January 15, 2006