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

Table 5

STDs for each time link (unit: ns). The improvement indicates the kinematic 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	0.285	0.301	5.316
TLM2-USUD	0.295	0.322	8.385
GUA1-USUD	0.286	0.324	11.728
CUSV-USUD	0.354	0.369	4.065
Average value	0.305	0.329	7.374