METHOD AND DEVICE FOR ESTIMATING A POSITION AND A SPEED OF AN AIRCRAFT DURING AN APPROACH PHASE FOR AUTOMATIC LANDING

- Device and system for estimating the position and speed of an aircraft during an approach phase allowing automatic landing. - The estimation device (1) comprises an acquisition unit (1) of a current position (latGNSS, lonGNSS, hGNSS) of the aircraft (AC) of a geopositioning system (GNSS), an acquisition unit (2) of a current acceleration (an, ae, az) of an inertial unit (IRS), an acquisition unit (3) of a current lateral deviation (ηLOC) and a current vertical deviation (ηGLD) of a landing aid device (22), a filtering unit (4) for estimating an unbiased speed (Vn, Ve, Vd) of the aircraft (AC), a filtering unit (7) for estimating a current lateral deviation (DY), a current vertical deviation (DZ) as well as a current lateral speed (DVY) and a current vertical speed (DVZ) of the aircraft (AC).