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

Table 4

RMS values of ionosphere-free phase post-fit residuals of orbit determination.

	POD without phase error	POD with mean value correction of	POD with phase error model
	model correction/mm	phase error model/mm	correction/mm
GRACE A	12.79	9.99	9.96
GRACE B	12.27	9.46	9.28