Method and device for estimating a lateral speed and a lateral position of an aircraft, during a phase where the aircraft is traveling on the ground

A device for estimating a current lateral speed and a current lateral position of an aircraft while the aircraft is traveling on a runway after a landing of the aircraft on the runway, the device comprising:

• a first data generation unit configured for determining a lateral position value that represents an initial lateral position, wherein the initial lateral position corresponds to a lateral position value of the aircraft with respect to a central longitudinal axis of the runway at a time of the aircraft touching down on the runway on landing;
• a second data generation unit configured for repetitively determining, at least from the time of the aircraft touching down on the runway upon landing, a current ground speed of the aircraft and a current lateral angular deviation, wherein the current lateral angular deviation represents an angular deviation between a current route of the aircraft and a heading of the runway;
• a first computation unit configured for repetitively computing the current lateral speed of the aircraft from the current ground speed and the current lateral angular deviation of the aircraft;
• a second computation unit configured for computing a current lateral position from the current lateral speed and the initial lateral position of the aircraft;
• and
• a data transmission link configured for transmitting one or more of the current lateral speed and the current lateral position to at least one user system of the aircraft.

An aircraft comprising a device for estimating a current lateral speed and a current lateral position of an aircraft while the aircraft is traveling on a runway after a landing of the aircraft on the runway, the device comprising:

• a first data generation unit configured for determining a lateral position value that represents an initial lateral position, wherein the initial lateral position corresponds to a lateral position value of the aircraft with respect to a central longitudinal axis of the runway at a time of the aircraft touching down on the runway on landing;
• a second data generation unit configured for repetitively determining, at least from the time of the aircraft touching down on the runway upon landing, a current ground speed of the aircraft and a current lateral angular deviation, wherein the current lateral angular deviation represents an angular deviation between a current route of the aircraft and a heading of the runway;
• a first computation unit configured for repetitively computing the current lateral speed of the aircraft from the current ground speed and the current lateral angular deviation of the aircraft;
• a second computation unit configured for computing a current lateral position from the current lateral speed and the initial lateral position;
• and
• a data transmission link configured for transmitting one or more of the current lateral speed and the current lateral position to at least one user system of the aircraft.