Thales

Didier Le Boulc'h

Pierre Bosshard

Jean-Didier Gayrard

Antonin Hirsch

Judicael Pressence

Eric Melet

A method for multibeam coverage of a region of the surface of the Earth includes the generation, by a telecommunications payload embedded on a satellite, of a plurality of radiofrequency beams, called elementary beams; the formation of a plurality of radiofrequency beams, called composite beams, exhibiting footprints on the ground of different sizes, each the composite beam being obtained by the grouping of one or more elementary beams; and the transmission or the reception of data through the composite beams, identical data being transmitted or received through all the elementary beams forming one and the same composite beam.

Method for multibeam coverage by the grouping of elementary beams of the same colour, and telecommunications payload for implementing such a method

Method for multibeam coverage by the grouping of elementary beams of different colours, and telecommunications payload for implementing such a method

A broadband multibeam satellite radio communication system is configured to cover a geographical service area that is broken down into a plurality of transmission spots that are each made up of a central internal area and a peripheral area. A first polarization state and a second polarization state are respectively allocated to the spots of a first grid Gand the spots of the second grid G. One and the same main band BP of frequencies is allocated wholly to each central internal area. The coverage of the quadruple points service area is a pavement of elemental useful surfaces or coverage meshes having the shape of a parallelogram.

Broadband multibeam satellite radio communication system with improved reuse of frequencies on the forward channel, and associated method for reuse

A satellite telecommunications system has a global coverage area and a plurality of user terminals distributed in the global coverage area. The global coverage area is covered by a first set of spots which form a regular cellular mesh, and by at least a second set of local spots, irregularly distributed and superimposed geographically on spots of the first set. The spots of the first set of spots have allocated channels with the same frequency capacity, the same channel being re-used by a plurality of different spots, and the local spots of the second set of spots have a special allocated channel having an increased frequency capacity.

Growing community of inventors

Toulouse, France

Didier Le Boulc'h