Improved Mitigation Method for the Multipath Delays of BDS-3 Code Observations with the Aid of a Sparse Modeling Algorithm

Table 4

Average daily RMS values () of position residuals (B1I, B3I) for four stations obtained using three BDS-3 observation multipath delay processing strategies and the corresponding improvements.

Stations	Directions	B1I					B3I
		None	Two-step	Imp. (%)	One-step	Imp. (%)	None	Two-step	Imp. (%)	One-step	Imp. (%)
WUH2	E	−0.085	−0.037	56.5	−0.032	62.4	−0.253	−0.249	1.6	−0.132	47.8
	N	−0.044	−0.041	6.8	−0.033	25.0	−0.091	−0.084	7.6	−0.056	38.5
	U	−0.089	−0.084	5.6	−0.059	33.7	−0.239	−0.205	14.2	−0.150	37.2
KNDY	E	−0.024	−0.019	20.8	−0.018	25.0	−0.042	−0.037	11.9	−0.034	19.0
	N	−0.022	−0.013	40.9	−0.012	45.4	−0.042	-0.036	14.3	−0.028	33.3
	U	0.259	0.225	13.1	0.222	14.3	0.178	0.175	1.6	0.171	3.9
BJF1	E	−0.049	−0.048	2.0	−0.047	4.1	−0.045	−0.045	0.0	−0.042	6.6
	N	−0.031	−0.029	6.5	−0.028	9.6	−0.038	−0.036	5.2	−0.036	5.3
	U	0.058	0.051	12.1	0.043	25.9	0.033	−0.033	0.0	0.032	3.0
XIA1	E	−0.043	−0.039	9.3	−0.036	16.3	−0.041	−0.039	4.9	−0.038	7.3
	N	−0.029	−0.026	10.3	−0.024	17.2	−0.045	−0.044	2.2	−0.042	6.6
	U	0.580	0.577	0.5	0.573	1.2	0.886	0.885	0.1	0.884	0.2