Patent ID: 11928977
Assignee: AIRBUS OPERATIONS S.L.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A method for assisting in a landing of an aircraft on a landing runway of an airport according to a predetermined approach of said landing runway, comprising the following steps implemented by a processing unit embedded onboard the aircraft:
during a first phase of a landing runway approach procedure according to said predetermined approach, when the aircraft flies above a predetermined height with respect to a landing runway threshold:
acquiring information from a receiver of ILS guidance signals embedded onboard the aircraft;
acquiring aircraft position and speed information from a signal receiver of a satellite navigation system embedded onboard the aircraft;
acquiring aircraft position and speed information from an inertial unit embedded onboard the aircraft;
determining merged aircraft position and speed information as a function of said information from the receiver of ILS guidance signals and of said aircraft position and speed information from the signal receiver of a satellite navigation system;
determining a bias of the aircraft position and speed information from the inertial unit, as a function of said merged aircraft position and speed information by calculating a difference between said merged aircraft position and speed information and said position and speed information from the inertial unit; and
controlling a guiding of the aircraft based on the information from the receiver of ILS guidance signals, then:

during a second phase of the landing runway approach procedure according to said predetermined approach, when the aircraft flies below said predetermined height with respect to the landing runway threshold:
acquiring aircraft position and speed information from the inertial unit;
determining adjusted aircraft position and speed information by applying, to the aircraft position and speed information from the inertial unit, a correction corresponding to the bias determined during the first phase of the approach procedure; and
controlling the guiding of the aircraft along a landing runway approach axis corresponding to said predetermined approach, as a function of said adjusted position and speed information.