3Arthur C,Clarke.Extra-terrestrial relays-can rocket stations give world-wide radio coverage[J].Wireless World,Oct 1945.
4Oliver Montenbruck,Eberhard Gill.Satellite Orbits-Models,Methods,and Application[M].Springer-Verlag Berlin Heidelberg 2000,Germany.
5Soop E M.Handbook of Geostationary Orbits[M].KLUWER ACADEMIC PUBLISHERS.
6Wauthier P,Francken P,Laroche.Collocation of six ASTRA satellites:assessment after one year of operations[C]// Proceedings of the 12th International Symposium on Space Flight Dynamics,ESOC,Darmstadt,Germany,1997:13-18.
7Collection of Multi-GEO at 19W[OL].www.DLR.GSOC.de.
9Hiroaki UMEHARA.Improvement of eccentricity-inclination separation using imaginary-interaction guidance[J].Celestial Mechanics and Dynamical Astronomy,1999,74:69-94.
10Bong-Kyu Park, Min-Jea Tahk, Hyo-Choong Choi. Station collocation design algorithm for multiple geostationary satellites operation [J]. Journal of Spacecraft and Rockets,2003, 40(6).
