Abstract: The invention concerns a method for estimating navigation date of a land vehicle, comprising steps of: recciving inertial data (100) acquired by an inertial sensor, receiving geometry and orientation parameters of a travelled road, integrating (106) the data on the basis of the parameters in order to produce navigation data comprising a movement of the vehicle relative to the road measured in a direction (Zr, Yr), the vehicle only being able to move in the direction within a bounded interval without leaving the road, estimating (108) an error affecting the navigation data by sol ing equations assuming that a difference between the calculated movement and a reference movement constitutes an error in the movement of the vehicle parallel to the direction, the reference movement having a value less than or equal to the length of the interval, correcting (110) the produced navigation data from the estimated error.

Abstract: The present invention concerns a method for detecting parasitic movements during static alignment of an inertial measurement unit (3), the method being characterised by steps of: receiving radio navigation measurements acquired (100) by a receiver (1) from signals previously transmitted by a set of radio navigation satellites (S), estimating (260) a movement of the inertial measurement unit from the acquired measurements, comparing (280) the estimated movement with a predefined threshold, indicating (290) a parasitic movement of the inertial measurement unit when the movement crosses the predefined threshold, in which the estimation (260) of the movement of the inertial measurement unit (3) from the acquired measurements comprises the following steps, implemented by the data processing unit for each satellite: calculating (262) a position variation from a phase of a first radio navigation signal transmitted by the satellite and received by the receiver at an initial reception time, and from a phase of a secon

Abstract: The invention concerns a method for controlling the integrity of the value of a piece of navigation information delivered by a merging/consolidation device including a plurality of processing modules. Each module generates a navigation solution from measurements coming from one or a plurality of separate navigation devices, which involves defining, for each processing module, a radius of protection, corresponding to a given probability of failure. The method includes defining at least one consolidated area that encompasses protection areas centered on the solution values that are output from the processing modules and that correspond to the radii of protection defined for these modules. The radius of protection of the merging/consolidation device for the probability of failure itself is defined to correspond to the consolidated area.

Abstract: The present invention concerns a method for detecting parasitic movements during static alignment of an inertial measurement unit (3), the method being characterised by steps of: receiving radio navigation measurements acquired (100) by a receiver (1) from signals previously transmitted by a set of radio navigation satellites (S), estimating (260) a movement of the inertial measurement unit from the acquired measurements, comparing (280) the estimated movement with a predefined threshold, indicating (290) a parasitic movement of the inertial measurement unit when the movement crosses the predefined threshold, in which the estimation (260) of the movement of the inertial measurement unit (3) from the acquired measurements comprises the following steps, implemented by the data processing unit for each satellite: calculating (262) a position variation from a phase of a first radio navigation signal transmitted by the satellite and received by the receiver at an initial reception time, and from a phase of a secon

Abstract: The invention concerns a method for controlling the integrity of the value of a piece of navigation information delivered by a merging/consolidation device including a plurality of processing modules. Each module generates a navigation solution from measurements coming from one or a plurality of separate navigation devices, which involves defining, for each processing module, a radius of protection, corresponding to a given probability of failure. The method includes defining at least one consolidated area that encompasses protection areas centered on the solution values that are output from the processing modules and that correspond to the radii of protection defined for these modules. The radius of protection of the merging/consolidation device for the probability of failure itself is defined to correspond to the consolidated area.

Abstract: The invention relates to a method for integrity monitoring of a primary set of measurements obtained from navigation signals sent by satellites and provided to an integrity control device comprising a plurality of Kalman filters, the method comprising the steps definition, for each Kalman filter, of a secondary set of measurements contained in the primary set, calculation by each Kalman filter of a navigation solution from a respective secondary set of measurements, wherein definition of the secondary sets respects the following principles: each measurement contained in the primary set is present in at least one of the secondary sets, for each p-uplet of measurements of the primary set, p being a predetermined integer greater than 1, at least one of the secondary sets does not contain said p-uplet of measurements, for each secondary set, at least one of the p-uplets is excluded from said secondary set, the method further comprising the steps of: detection, for each navigation solution, of at most p faulty mea

Abstract: The invention relates to a method for integrity monitoring of a primary set of measurements obtained from navigation signals sent by satellites and provided to an integrity control device comprising a plurality of Kalman filters, the method comprising the steps definition, for each Kalman filter, of a secondary set of measurements contained in the primary set, calculation by each Kalman filter of a navigation solution from a respective secondary set of measurements, wherein definition of the secondary sets respects the following principles: each measurement contained in the primary set is present in at least one of the secondary sets, for each p-uplet of measurements of the primary set, p being a predetermined integer greater than 1, at least one of the secondary sets does not contain said p-uplet of measurements, for each secondary set, at least one of the p-uplets is excluded from said secondary set, the method further comprising the steps of: detection, for each navigation solution, of at most p faulty mea

Abstract: The invention concerns a method for controlling the integrity of the value of a piece of navigation information delivered by a merging/consolidation device comprising a plurality of processing modules, each generating a navigation solution from measurements coming from one or a plurality of separate navigation devices, which involves defining, for each processing module, a radius of protection, corresponding to a given probability of failure, characterised in that it involves defining at least one consolidated area that encompasses protection areas centred on the solution values that are output from the processing modules and that correspond to the radii of protection defined for these modules, the radius of protection of said merging/consolidation device for said probability of failure itself being defined to correspond to said consolidated area.