Abstract: A device comprising a radar for taking at least one radar image of the terrain in front of the aircraft in a zone containing at least one characteristic pattern, the position of the characteristic pattern being known, an image processing unit for detecting, on the radar image taken by the radar, a characteristic symbol representing the characteristic pattern, a computation unit for determining, from at least the position of the characteristic symbol in the image and from characteristics of the radar image acquisition, relative position information illustrating the position of the aircraft in relation to the characteristic pattern, and for determining the position of the aircraft, from the relative position information and from the known position of the characteristic pattern, and a unit for transmitting at least the position of the aircraft to at least one user system, for example a landing aiding system or an SVS display.

Abstract: In an aircraft comprising a cockpit comprising a display screen, a camera configured to acquire images of the environment of the aircraft, as well as a display management system, a ground rolling aid system configured so as to a) acquire several successive images of the environment of the aircraft via the camera, corresponding to various ground positions of the aircraft, b) modify these images by removing at least zones corresponding to the aircraft, so as to produce modified images, c) combine several of the modified images to produce a recomposed image, d) superpose an image characteristic of the aircraft on the recomposed image so as to produce a reference image, and e) display, on the cockpit display screen, an image corresponding to the reference image.

Abstract: In an aircraft comprising a terrain warning device monitoring the flight of the aircraft with respect to the surrounding terrain and a terrain sensor, the terrain avoidance device is linked to the terrain warning device, to the terrain sensor and to a terrain relief database. The terrain avoidance device comprises a processing unit configured to determine a valid terrain avoidance trajectory as a function at one and the same time of an item of information regarding current position of the aircraft, of terrain relief information arising from the database and of terrain relief information provided by the terrain sensor when the terrain avoidance device receives a warning signal from the terrain warning device.

Abstract: A device comprising a radar for taking at least one radar image of the terrain in front of the aircraft in a zone containing at least one characteristic pattern, the position of the characteristic pattern being known, an image processing unit for detecting, on the radar image taken by the radar, a characteristic symbol representing the characteristic pattern, a computation unit for determining, from at least the position of the characteristic symbol in the image and from characteristics of the radar image acquisition, relative position information illustrating the position of the aircraft in relation to the characteristic pattern, and for determining the position of the aircraft, from the relative position information and from the known position of the characteristic pattern, and a unit for transmitting at least the position of the aircraft to at least one user system, for example a landing aiding system or an SVS display.

Abstract: In an aircraft comprising a cockpit comprising a display screen, a camera configured to acquire images of the environment of the aircraft, as well as a display management system, a ground rolling aid system configured so as to a) acquire several successive images of the environment of the aircraft via the camera, corresponding to various ground positions of the aircraft, b) modify these images by removing at least zones corresponding to the aircraft, so as to produce modified images, c) combine several of the modified images to produce a recomposed image, d) superpose an image characteristic of the aircraft on the recomposed image so as to produce a reference image, and e) display, on the cockpit display screen, an image corresponding to the reference image.