RT Journal Article
SR Electronic
T1 Design and implementation of a BDS precise point positioning service
JF NAVIGATION: Journal of the Institute of Navigation
JO NAVIGATION
FD Institute of Navigation
SP 875
OP 891
DO 10.1002/navi.392
VO 67
IS 4
A1 Liu, Cheng
A1 Gao, Weiguang
A1 Liu, Tianxiong
A1 Wang, Dun
A1 Yao, Zheng
A1 Gao, Yang
A1 Nie, Xin
A1 Wang, Wei
A1 Li, Dongjun
A1 Zhang, Weixing
A1 Wang, Dongxia
A1 Rao, Yongnan
YR 2020
UL https://navi.ion.org/content/67/4/875.abstract
AB Precise point positioning (PPP) service is of great significance for BDS. The design and implementation of the service are presented. The PPP-B2b signal of the service is constructed, which is efficient multiplexed with other signal components, and achieves compatibility between two service phases. A customized message format that can augment all visible satellites of four core constellations in mainland China is proposed. The high-gain, 64-ary, low-density parity check (LDPC) coding is used, which facilitates the integrated design of the receivers. A signal quality test has revealed that the S-curve bias (SCB) of PPP-B2b does not exceed 0.0165 ns and the coherence between the code and the carrier of the signal is only 0.137°. A performance evaluation has indicated that at its current stage, the positioning accuracy in the horizontal and vertical directions is better than 0.15 m and 0.3 m, respectively, and the convergence time does not exceed 800 s.