Abstract: A method for assisting with the navigation of a fleet of vehicles including a main vehicle and a secondary vehicle that is mobile in relation to the main vehicle, the method including receiving relative movement data, acquired by one or more sensors, between the main vehicle and the secondary vehicle, estimating a navigation status of the fleet of vehicles by an invariant Kalman filter using the received data as observations, the navigation status including first variables representing a first rigid transformation linking a location mark associated with the main vehicle to a reference point, and second variables representing a second rigid transformation linking a location mark associated with the main vehicle to a location mark associated with the secondary vehicle, the invariant Kalman filter using, as an internal composition law, a law including a term-by term composition of the first rigid transformation and the second rigid transformation.

Abstract: A method of attenuating the amplitude of waves having a given center wavelength, the method including the use of a device including: an assembly of a plurality of modules juxtaposed next to each other along a given direction, each module including at least one cavity having a first opening and a second opening; wherein the modules are placed in a position in which the first opening of each cavity is permanently submerged and the second opening is in communication with the ambient air, the dimensions of the cavities being determined so that each cavity forms a resonant cavity at the given center frequency.

Abstract: The method of preparing a navigation autonomy map for a vehicle covering a zone including path segments, comprising the following steps: identifying the path segments for which the map needs to be prepared; for each path segment, calculating a primary autonomy index in accordance with at least two distinct functions; and calculating for each path segment a final autonomy index by taking a weighted average of the primary autonomy indices. An autonomy map, an application of the autonomy map, and a vehicle using such an autonomy map.

Abstract: The invention relates to a method for assisting with the navigation of a first vehicle (1) that is stationary in relation to a second vehicle (2) which is mobile within a reference frame, said method involving acquiring (112) movement data on the first vehicle (1) by at least one proprioceptive sensor (6), and estimating a navigation status (X 1) of the first vehicle (1) by an invariant Kalman filter using a navigation status (X 2) of the second vehicle (2) as an observation, the navigation status of the first vehicle (1) comprising variables that represent a rigid transformation (T 1) linking a first location mark associated with the first vehicle (1) to the reference frame, and variables that represent a rigid transformation (T 21) linking a location mark associated with the second vehicle (2) to the first location mark, the invariant Kalman filter using, as an internal composition taw, a law comprising a term-by-term composition of the two rigid transformations.

Abstract: A method of harmonizing a first inertial measurement unit and a second inertial measurement unit with each other includes the steps of: causing a control unit to compare the vectors measured by the inertial measurement units in order to determine a specific force difference and a rotation difference while taking account of the lever arms between the two measurement units; and causing the control unit to determine a harmonization value from the specific force difference and the rotation difference while taking account of the lever arms between the two measurement units. Navigation apparatus performs the method.

Abstract: The invention concerns a device (1) for locating a target, comprising: —a camera (2) that can be oriented in an orientation in view of the target so that the camera acquires an image of the target, and an orientation in view of a star so that the camera acquires at least one image of the star, —an inertial unit (4) configured to calculate position and orientation data of the camera (2), —a resetting module (6) configured to a apply stellar resetting to the data on the basis of the image of the star, in order to produce reset data, —a location module (8) configured to estimate a position of the target (T) from the image of the target (T) and the reset data, —a communication interface for communicating with an operator station, the camera (2) passing from one orientation to the other in response to the reception, by the interface, of a command sent by the operator station.

Abstract: The invention relates to a device (10), in particular for cleaning a glass surface, comprising a frame (12) carrying at least one rolling member (22, 24) and at least first (14) and second (16) members for applying a vacuum to a surface (18) connected to means for supplying a vacuum, the first (14) and second (16) members being independently of one another movably mounted on the frame (12) between a first position in which they are adapted to come into contact with a surface (18) of an object to apply a vacuum thereto and a second position in which they are remote from said surface (18), the device further comprising means (21) for controlling the vacuum of each of the first (14) and second (16) members in their first position configured to ensure permanent sliding contact on the surface (18).

Abstract: The method of preparing a navigation autonomy map for a vehicle covering a zone including path segments, comprising the following steps: identifying the path segments for which the map needs to be prepared; for each path segment, calculating a primary autonomy index in accordance with at least two distinct functions; and calculating for each path segment a final autonomy index by taking a weighted average of the primary autonomy indices. An autonomy map, an application of the autonomy map, and a vehicle using such an autonomy map.

Abstract: The invention concerns a device (1) for locating a target, comprising: a camera (2) that can be oriented in an orientation in view of the target so that the camera acquires an image of the target, and an orientation in view of a star so that the camera acquires at least one image of the star, an inertial unit (4) configured to calculate position and orientation data of the camera (2), a resetting module (6) configured to a apply stellar resetting to the data on the basis of the image of the star, in order to produce reset data, a location module (8) configured to estimate a position of the target (T) from the image of the target (T) and the reset data, a communication interface for communicating with an operator station, the camera (2) passing from one orientation to the other in response to the reception, by the interface, of a command sent by the operator station.

Abstract: A control device comprising a mobile component such as a lever mounted on a ball pivot, wherein the lever is displaceable in rotation around three different axes and the device comprises two arrays of photodetectors for detecting points uniformly distributed over supports with the shape of a portion of a sphere, the arrays being fixed and the supports being borne by the lever.

Abstract: A control device comprising a mobile component such as a lever mounted on a ball pivot, wherein the lever is displaceable in rotation around three different axes and the device comprises two arrays of photodetectors for detecting points uniformly distributed over supports with the shape of a portion of a sphere, the arrays being fixed and the supports being borne by the lever.