Patent ID: 8942923
Filing Date: 2015-01-27
Classification: G01C,G01S

Abstract:
1. A process for determination of navigation parameters of a carrier by a hybridisation device comprising a Kalman filter ( 3 ) working out a hybrid navigation solution from inertial measurements calculated by a virtual platform ( 2 ) and raw measurements of signals emitted by constellations of satellites delivered by a satellite-positioning system (GNSS), comprising the steps of: determination for each satellite of at least one (Ir, Ir′) probability ratio between a hypothetical breakdown of a given type of the satellite and a hypothetical absence of breakdown of the satellite, declaration of a breakdown of given type on a satellite as a function of the (Ir, Ir′) probability ratio associated with this breakdown and a threshold value, estimation of an impact of the declared breakdown on the hybrid navigation solution, and correction of the hybrid navigation solution as a function of the estimation of the impact of the declared breakdown.