Patent ID: 6535177
Filing Date: 2003-03-18
Classification: H01Q

Abstract:
A method for pointing a fixed antenna having a reflector and at least one transceiver source suitable for aiming at a set of a plurality of satellites located between two extreme positions S1, S2 on a geostationary orbit, the method comprising the steps of:adjusting an azimuth angle of said antenna; adjusting an elevation angle of said antenna; offsetting said transceiver source on a focal line of the antenna through a distance d from a middle of said focal line so as to aim at one of the extreme positions S1, S2, said distance d being determined as a function of an angle &agr; formed between a first line connecting an origin O of a focal axis of the reflector to said one of the extreme positions and a second line connecting said origin O to a middle position SM of the geostationary orbit; turning the antenna through the angle &agr; about an axis D perpendicular to a plane containing the focal line and the origin O of the focal axis; and adjusting a roll angle by turning the antenna about an axis connecting said origin O to a satellite situated at said one of the extreme positions, so as to aim at the other of said extreme positions and bring the focal line into alignment with the set of satellites situated between the extreme positions S1 and S2.