Patent ID: 8836571

Claim:
A method for transmission to a receiver of a coordinate λ of a transmitter positioned in a geographic coordinate system λ, φ, wherein λ coincides with a latitude, and λ coincides with a longitude, at least a portion of one hemisphere of the Earth's sphere being divided into N latitude sections each bounded by a minimum φ and a maximum φ, each latitude section being subdivided into X cells each bounded by a minimum λ and a maximum λ, X varying depending on the section, comprising: partitioning with a transmitter the latitude sections into M+1 classes, where M is a integer, and M sections being interspersed between two sections of the same class; and transmitting with the transmitter and receiving with the receiver, in one and the same message, a coordinate λ of the transmitter referenced relative to the cell in which the transmitter is located and the class of the latitude section in which the transmitter is located, a range of the receiver being at most equal to a width of a cell along an axis of variation of the coordinate λ.