METHOD AND DEVICE FOR POINTING AND POSITIONING A MULTISATELLITE ANTENNA

摘要

The invention concerns a method for pointing a fixed reflector antenna (10) comprising at least a transmission/reception source capable of aiming at a plurality of satellites located between two extreme positions S1, S2 of a geostationary orbit (8). The invention is characterised in that it consists in offsetting said transmission/reception source by a distance d relatively to the middle of the focal line (6) so as to aim at one of the extreme positions S1, S2, said distance d being calculated on the basis of an angle alpha formed by the line connecting the origin O of the reflector (10) focal axis to the extreme position aimed at, and the line connecting said origin O to the median position SM of the geostationary orbit (8); in rotating the reflector (10) by angle alpha about an axis D perpendicular to the plane containing the focal line (6) and the origin O of the focal axis, then in adjusting the angle of list by rotating the antenna (2) on itself about the pointing direction of the satellite located on the extreme position aimed at, so as to aim at the other extreme position and to align the focal line (6) on the set of satellites located between the positions S1 and S2.