Patent ID: 7933714

Claim:
A device for assisting ground navigation of an aircraft on an airport, said device comprising: a current position unit for determining a current position of said aircraft located on ground, said current position unit comprising positioning equipment associated with a satellite positioning system; a current heading unit for determining a current heading of the aircraft; a database comprising cartographic data relating to the airport; a navigation system which receives and brings together said current position, said heading and said cartographic data for simultaneous display; and a display system which receives information from said navigation system and which presents on at least one display screen at least a partial map of the airport and an aircraft symbol which is positioned at said current position and oriented according to said current heading, wherein said current position unit comprises: said positioning equipment, which comprises at least one antenna which is mounted on the aircraft, and a first receiver for in-flight navigation which is linked with said antenna; a second receiver for ground navigation and having greater performance than said first receiver, and which is linked with said at least one antenna and configured to determine the current position of the aircraft from signals received and by an antenna coupler of said antenna; the antenna coupler: which is provided with an input connected to said antenna and with two outputs connected to said first and second receivers respectively; and which is configured to double the signal received from the antenna and to transmit one of the signals obtained by the doubling to said first receiver and the other signal to said second receiver.