Modelling and Assessment of BDS-3 Real-time Precise Point Positioning Time Transfer Based on PPP-B2b Service

Table 4

STDs for each time link (unit: ns). The improvement indicates the static B2b-RTPPP time transfer performance using B1I/B3I combination compare with that of using the B1C/B2a combination in STD values.

Time link	B1I/B3I	B1C/B2a	Improvement (%)
SHA1-USUD	0.045	0.084	46.43
TLM2-USUD	0.067	0.080	16.25
GUA1-USUD	0.080	0.091	12.09
CUSV-USUD	0.088	0.093	5.38
Average value	0.070	0.087	20.04