A Robust Method for GPS/BDS Pseudorange Differential Positioning Based on the Helmert Variance Component Estimation

Table 1

RMS and STD values for different length baselines (m).

		Scheme 1				Scheme 2
		N	E	U	Position	N	E	U	Position
RMS	39 km	0.29	0.25	0.63	0.74	0.27	0.27	0.68	0.78
	46 km	0.28	0.23	0.69	0.78	0.26	0.24	0.72	0.80
	64 km	0.35	0.21	0.69	0.80	0.35	0.23	0.74	0.85
STD	39 km	0.28	0.20	0.62	0.71	0.27	0.22	0.69	0.77
	46 km	0.27	0.20	0.67	0.75	0.26	0.21	0.70	0.77
	64 km	0.27	0.21	0.67	0.75	0.26	0.23	0.72	0.80