Optimization of the BDS-2 triple-frequency un-combined PPP random model without inter-frequency clock deviation correction
ZHOU Changjiang, YU Haifeng, WANG Linwei, LEI Yunping, YUE Caiya
Bulletin of Surveying and Mapping . 2023, (12): 164 -168 .  DOI: 10.13474/j.cnki.11-2246.2023.0378