Constellation of non-geostationary satellites providing permanen

Details Constellation of non-geostationary satellites providing permanen Constellation of non-geostationary satellites providing permanen

1997-06-17

2000-03-07

Poon, Peter M.

Aeronautics and astronautics

Spacecraft

Spacecraft formation, orbit, or interplanetary path

B64G 100

Patent

active

060329025

ABSTRACT:
The invention relates to a communications and/or navigation system based on a constellation of non-geostationary satellites in orbit around the terrestrial globe. The constellation has satellites grouped in pairs, and has orbital planes that are also grouped in pairs. The pairs of orbital planes are mutually spaced apart by an angle that is different from the spacing between the orbital planes in a pair of orbital planes, and the satellites in a pair have orbital phase offsets different from the orbital phase offset between pairs of satellites in different pairs of orbital planes. This type of constellation makes it possible to ensure continuous coverage, via at least one satellite, of a geographical zone of interest, while taking into consideration the frequency-coordination constraint.

REFERENCES:
patent: 5931417 (1999-08-01), Castiel
patent: 5957409 (1999-09-01), Castiel et al.
patent: 5963862 (1999-10-01), Adiwoso et al.
F. Ananasso, "Global Satellite Networks; Effectively Deploying Worldwide Communication Infrastructures", Annual Review of Communications, vol. 49, Jan. 1, 1996, pp. 947-958.
C. Wang, "Performance Modeling of a Class of Low Earth Orbit Satellite Networks", Proceedings of the Global Telecommunications Conference (GLOBECOM), Houston, Nov. 29-Dec. 2, 1993, vol. 1 of 4, Nov. 29, 1993, Instititute of Electrical and Electronics Engineers, pp. 569-573.

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