Unified ambiguity resolution method based on three PPP Models
DU Zhenqiang, CHAI Hongzhou, XIANG Minzhi, YIN Xiao, LIU Chunhe
Acta Geodaetica et Cartographica Sinica . 2020, (7): 824 -832 .  DOI: 10.11947/j.AGCS.2020.20190467