The algorithm of multi-frequency carrier phase integer ambiguity resolution with GPS/BDS between long range network RTK reference stations
ZHU Huizhong, LI Jun, YU Zeran, ZHANG Kai, XU Aigong
Acta Geodaetica et Cartographica Sinica . 2020, (3): 300 -311 .  DOI: 10.11947/j.AGCS.2020.20190191