Changsheng Cai, Yang Gao, Lin Pan, Jianjun Zhu (2015).Precise point positioning with quad-constellations: GPS, BeiDou, GLONASS and Galileo. Advances in Space Research, 56(1):133- 143. （SCI）
Pre One:Lin Pan, Changsheng Cai*, Rock Santerre, Jianjun Zhu (2014).Combined GPS/GLONASS precise point positioning with fixed GPS ambiguities. Sensors, 14(9): 17530-17547 (SCI)
Next One:Changsheng Cai, Chang He, Rock Santerre, Lin Pan, Xianqiang Cui,*, Jianjun Zhu(2016).A comparative analysis of measurement noise and multipath for four constellations: GPS, BeiDou, GLONASS and Galileo. Survey Review, 48(349): 287-295（SCI）
