Table 5
Position accuracy statistics for different daily tracking frequency cases

Daily tracking frequency	PU (3D RMS, 3σ)		OD (3D RMS)		Overlap (3D RMS)		OP (3D RMS, 3σ)
	Mean (m)	Std. Dev. (m)	Mean (m)	Std. Dev. (m)	Mean (m)	Std. Dev. (m)	Mean (m)	Std. Dev. (m)
CASE I	29.05	13.35	14.74	14.16	20.72	22.17	70.01	54.64
CASE II	35.26	21.51	15.38	17.43	24.31	20.87	78.83	100.92
CASE III	40.94	26.45	40.23	54.42	63. 41	73.13	155.19	301.28

PU, position uncertainty; RMS, root mean square; OD, orbit determination; OP, orbit prediction.