Data collection method for collecting data in a radiofrequency communication system comprising: - at least one space or airborne platform that knows its position, configured so as to transmit with an antenna beam whose width and orientation are adaptable, and comprising data storage means, and - at least one beacon (310, 311, 312, 314, 315) configured so as to acquire data, the position of each beacon being known to at least one of said beacon and the space or airborne platform, the method being characterized in that it comprises: - a first step in which the platform emits an activation signal with a low directional antenna beam, to which each beacon wishing to transmit data responds with an access request comprising an identifier, - a second step of generating a table comprising, for each item of equipment that transmitted an access request, a duration of visibility to the transmission device, a frequency band and a transmission duration, - a third step of defining, based on the table generated in the second step, a control plan scheduling the sequencing of the transmissions of the items of equipment that emitted an access request and associating them with directional antenna beam configurations of the platform, and - a fourth step comprising: o transmitting, to the items of equipment that emitted an access request, an item of information allowing them to ascertain the times at which they can transmit, and ∘ orienting a directional antenna beam (111, 112, 113) from the platform to one or more beacons, sending data from said one or more beacons to the platform, and storing the data received by the platform, in the order and according to the antenna beam configurations defined by the control plan. - at least one space or airborne platform that knows its position, configured so as to transmit with an antenna beam whose width and orientation are adaptable, and comprising data storage means, and - at least one beacon (310, 311, 312, 314, 315) configured so as to acquire data, the position of each beacon being known to at least one of said beacon and the space or airborne platform, - a first step in which the platform emits an activation signal with a low directional antenna beam, to which each beacon wishing to transmit data responds with an access request comprising an identifier, - a second step of generating a table comprising, for each item of equipment that transmitted an access request, a duration of visibility to the transmission device, a frequency band and a transmission duration, - a third step of defining, based on the table generated in the second step, a control plan scheduling the sequencing of the transmissions of the items of equipment that emitted an access request and associating them with directional antenna beam configurations of the platform, and - a fourth step comprising: o transmitting, to the items of equipment that emitted an access request, an item of information allowing them to ascertain the times at which they can transmit, and ∘ orienting a directional antenna beam (111, 112, 113) from the platform to one or more beacons, sending data from said one or more beacons to the platform, and storing the data received by the platform, in the order and according to the antenna beam configurations defined by the control plan. o transmitting, to the items of equipment that emitted an access request, an item of information allowing them to ascertain the times at which they can transmit, and ∘ orienting a directional antenna beam (111, 112, 113) from the platform to one or more beacons, sending data from said one or more beacons to the platform, and storing the data received by the platform, in the order and according to the antenna beam configurations defined by the control plan.