System and method for reducing interference between satellites

Details System and method for reducing interference between satellites System and method for reducing interference between satellites

1993-12-15

1995-08-22

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

342357, H04B 7185, G01S 502

Patent

active

054444497

ABSTRACT:
A satellite system facilitates communications between earth stations and both geostationary satellites and non-geostationary satellites in an orbit at a lower altitude than that of said the geostationary satellites by preventing the non-geostationary satellite from transmitting signals that might possibly interfere with signals transmitted by the geostationary satellites. The non-geostationary satellite includes position acquisition subsystem for determining the position, and in particular the latitude, of the non-geostationary satellite relative to the surface of the earth. A data processor determines a forbidden band of locations on the surface of the earth all possible geostationary satellites and the non-geostationary satellite, at its determined position, are separated by less than a specified minimum discrimination angle. An antenna control subsystem in the non-geostationary satellite controls transmission of signal energy from the non-geostationary satellite in accordance with the satellites position so as to prevent transmission of signal energy from the non-geostationary satellite to said locations within the forbidden band.

REFERENCES:
patent: 4315262 (1982-02-01), Acampora et al.
patent: 5227802 (1993-07-01), Pullman et al.

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