Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31108
Collocation Assessment between GEO and GSO Satellites

Authors: A. E. Emam, M. Abd Elghany


The change in orbit evolution between collocated satellites (X, Y) inside +/-0.09° E/W and +/- 0.07° N/S cluster, after one of these satellites is placed in an inclined orbit (satellite X) and the effect of this change in the collocation safety inside the cluster window has been studied and evaluated. Several collocation scenarios had been studied in order to adjust the location of both satellites inside their cluster to maximize the separation between them and safe the mission.

Keywords: Satellite, Risk Assessment, collocation, GEO

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1841


[1] Dinakar Prasad Vajja, “Deep Space Orbit Determination”, Master of Science Thesis, Chalmers University, Sweden, December 2005.
[2] Robert Wolf, “Satellite Orbit and Ephemeris Determination using Inter Satellite Links”, PHD – Germany, 2000.
[3] Srivastava S. K., Orbital perturbations and stationkeeping of communication satellites, J. Spacecraft Rockets 15 (1978) 67–78.
[4] Pocha J. J., in: An Introduction to Mission Design for Geostationary Satellites, D. Reidel, Dordrecht, 1987, pp. 103–111.
[5] Bassaler P., Colocation strategy in G.E.O. orbit for both Eutelsats satellites FM1 & FM6, in: Proceeding of InterB.-S. Lee, K.-H. Choi / Aerosp. Sci. Technol. 4 (2000) 507–515 515 national Symposium Space Flight Dyanamics, Toulouse,France, S95/027, 1995, pp. 503–518.
[6] Miguel Angel Molina-Cobos, HALO GEO Collocation Method Analysis, 25th International Symposium on Space Technology and Science, Tres Cantos, E-28760 Madrid, SPAIN.
[7] Satellite Communication Systems, Techniques and Technology, Fifth Edition, Gerard Maral - Michel Bousquet, 2009 John Wiley & Sons Ltd.