1. O’Driscoll C. Performance analysis of the parallel acquisition of weak GPS signals. Dissertation of Master Degree. Ireland: National University of Ireland, 2007
2. Petovello M, O'Driscoll C, Lachapelle G. Weak signal carrier tracking using extended coherent integration with an ultra-tight GNSS/ IMU receiver. In: European Navigation Conference, Toulouse, France, 2008
3. Zhang D H, Shi H, Jin Y Q, et al. The variation of the estimated GPS instrumental bias and its possible connection with ionospheric variability. Sci China Tech Sci, 2014; 57: 67–79
4. Yu T, Mao T, Wang Y G, et al. Using the GPS observations to reconstruct the ionosphere three-dimensionally with an ionospheric data assimilation and analysis system (IDAAS). Sci China Tech Sci, 2014; 57: 2210–2219
5. Li H N, Gao Z Z, Li J S, et al. Mathematical prototypes for collocating geostationary satellites. Sci China Tech Sci, 2013; 56: 1086–1092