Method and device for determining the ground position of a...

G - Physics – 01 – S

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G01S 5/14 (2006.01) G01C 21/16 (2006.01)

Patent

CA 2615042

The invention concerns a device (1) comprising means (2) for emitting periodically position data, means (3) for emitting inertial data, means (4) for determining the position of the mobile object upon each position data emission based thereon, and means (5) for determining the position of the mobile object between two successive emissions of position data, the time interval between two successive emissions being divided into time ranges of equal duration separated by intermediate times, the latter means (5) determining for each current intermediate time the position of the mobile object, based on its position at the preceding intermediate time and based on its movement during the time range delimited by the current and preceding intermediate times, movement which is calculated by means of the inertial data.

Le dispositif (1 ) comporte des moyens (2) pour émettre de façon périodique des données de position, des moyens (3) pour émettre des données inertielles, des moyens (4) pour déterminer la position du mo bile à chaque émission de données de position à partir de ces dernières, et des moyens (5) pour déterminer la position du mobile entre deux émissions successives de données de position, l'espace de temps entre deux émissions successives étant divisé en plages temporelles de même durée séparées par des temps intermédiaires, ces derniers moyens (5) déterminant pour chaque temps intermédiaire courant la position du mobile, à partir de sa position au temps intermédiaire précédent et à partir de son déplacement durant la plage temporelle délimitée par les temps intermédiaires courant et précédent, déplacement qui est calculé à l'aide des données inertielles.

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