摘要:
The invention discloses an antenna assembly comprising one or more sensors, possibly a fish-eye camera which produces images of the sky above the antenna, said images being processed to identify open sky and occulted sky areas, said identification being used to generate an antenna gain pattern shape wherein null zones are placed on the occulted sky areas, so as to eliminate the GNSS signals which are affected by multi-path reflection. The antenna assembly of the invention may be used with any GNSS receiver of the prior art. No specific data on the location of the receiver or its orientation is needed to perform the method of the invention, while in some embodiments, it may be useful to send some information on the number of satellites in view in the open sky.
摘要:
The present invention relates to an architecture (10) for observing a plurality of objects (18A,..,18N) arranged in geographically separate locations, comprising: - a processing center (14) connected to a global computer network (29), - at least one airliner (15) comprising: + a cabin system (33) comprising a local network (47), + a first external communication module (41), + a second external communication module (42), and + an intermediate communication module (43) connected to the first external communication module (41) via the local network (47) and to the second external communication module (42) via the local network (47), where the intermediate communication module (43) sends digital data comprising observation data between the second external communication module (42) and the first external communication module (41) via the local network (47).
摘要:
The positioning receiver according to the invention comprises means for storing configuration information and information on its reception conditions, which is processed in order to calculate a current and/or predicted precision of the positioning calculation. Advantageously, at least some of this information is integrated into a variation model of a Kalman filter integrated into the receiver. The invention notably allows a more rapid convergence on a reference precision in a mono-frequency operating mode and transitions between a mono-frequency and bi-frequency mode to be smoothed. Advantageously, the precision information is delivered graphically or in numerical form to the user.
摘要:
La présente invention concerne un dispositif de contrôle pour actionneur linéaire, comprenant un moteur (11) couplé à un dispositif de transformation d'un mouvement de rotation en un mouvement de translation (13) configuré pour déplacer une partie mobile (14) en translation. L'actionneur comprend au moins une butée mécanique (132) placée sur une partie fixe dudit actionneur, le groupe d'au moins une butée mécanique étant configuré pour faire obstacle au mouvement hélicoïdal relatif d'un l'ergot (22) de la partie mobile en translation lorsque l'ergot atteint au moins une position prédéterminée, le contact dudit ergot sur une butée générant un couple. Le dispositif de contrôle comprend en outre un module de contrôle connecté à au moins une jauge de contrainte (21) configuré pour générer un signal représentatif du couple détecté, le module de contrôle étant configuré pour comparer l'amplitude du signal généré par le groupe d'au moins une jauge de contrainte à au moins une valeur prédéterminée.
摘要:
This system (30) comprises: - a database (31) comprising maps (C ik ), each map being associated with an infrastructure from a plurality of available infrastructures and giving, at each point of a geographical area, a local value of a quantity relating to a quality of experience associated with the execution of an application accessing a remote resource via the infrastructure; a localisation means (20) generating a current position of the mobile terminal (10); a means (40) for selecting a path; a correlation means (50) capable of determining a correlation coefficient, from the current position, the selected path, and each map; and a selection means capable of selecting an infrastructure from the plurality of infrastructures, based on the correlation coefficients.