Ambit updating satellite orbit data
In an embodiment, communication takes place in application of an Aero Wimax transmission standard.Preferably, the terminal is suitable for using a single antenna for communications in both frequency bands.Other characteristics and advantages of the invention appear further from the following description of an embodiment given by way of non-limiting example, and with reference to the accompanying figures, in which: shows a system 2 of the invention for enabling aircraft to communicate with the ground.The system comprises at least one aircraft 4, and preferably a plurality of aircraft.The invention also provides an airplane including a terminal of the invention.The invention also provides a satellite suitable for communicating with the outside of the satellite by radiowaves in a frequency band extending from 5030 MHz to 5091 MHz, bounds included, in application of a Wi Max type transmission standard.In this general context, and in order to handle the increase in worldwide air traffic, new communications infrastructures are being defined and standardized.These infrastructures are designed to take charge of the exchanges of data that are needed for providing air traffic control by the authorities (air traffic services or ATS).
The needs for exchanging information between an airplane and the ground are constantly increasing since they are associated in particular with updating components of information systems of the airplane, with conveying flight information from ground stations, with conveying airplane maintenance information for optimizing operating costs, and with services made available to passengers.
That system is for use when the airplane is on the ground, and it is therefore not suitable for use in flight.
That system is referred to as Aero Wimax or indeed as the aeronautical mobile airport communication system (Aero MACS).
To this end, the invention provides an on-board communications terminal for an aircraft, suitable for communicating by radiowaves with the outside of the terminal in a frequency band extending from 5030 megahertz (MHz) to 5091 MHz, bounds included, in application of a Wi Max type transmission standard.
Advantageously, the terminal is suitable for communicating in a second frequency band extending from 5091 MHz to 5150 MHz, bounds included.