Landing assistance system using navigation satellites

A landing assistance system using navigation satellites, said system comprising several navigation satellites emitting signals controlled by a clock, a fixed station located in the vicinity of landing strips, said fixed station comprising:

• a receiver for positioning by satellite, said receiver giving an estimate of the position of said fixed station, and computing means giving correction data representing the deviation between this estimate and a reference position;
• radio transmission means transmitting in a radio channel according to the standards of the microwave landing system known as MLS, to transmit correction data, and landing data associated with each landing strip respectively, including the magnetic alignment, the coordinates of the approach, end of the landing strip and the identity of the landing strip;
• said system further comprising a station on-board each aircraft, said on-board station comprising:
• a conventional radio receiver to receive data transmitted by a microwave landing system known as MLS;
• a receiver for positioning by satellite, and computing means that give an estimate of the position of the aircraft, corrected by means of the correction data received by the radio receiver.