1. Neeck S P, Magner T J, Paules G E. NASA’s small satellite missions for earth observation. Acta Astronaut, 2005, 56: 187–192
2. Folta D, Bristow J, Hawkins A, et al. NASA’s autonomous formation flying technology demonstration, earth observing- 1. In: Proceedings of the 1st International Symposium on Formation Flying Missions and Technologies, Toulouse, 2002
3. Cabeza I, Maetinez A. Smart-2: an ESA mission to demonstrate the Key technologies for formation flying and dragfree control. In: Proceedings of the 1st International Symposium on Formation Flying Missions and Technologies, Toulouse, 2002
4. Kristiansen R, Nicklasson P J. Spacecraft formation flying: a review and new results on state feedback control. Acta Astronaut, 2009, 65: 1537–1552
5. Bauer F, Bristow J, Carpenter J, et al. Enabling spacecraft formation flying in any earth orbit through spaceborne GPS and enhanced autonomy technologies. Space Technol, 2001, 20: 175–185