FIELD: information technology.
SUBSTANCE: method is realised by a hybridisation device comprising a bank of Kalman filters, each working out a hybrid navigation solution from inertial measurements calculated by a virtual platform and raw measurements of signals emitted by a constellation of satellites supplied by a satellite-positioning system (GNSS), and comprises steps of: determination for each satellite of at least one probability ratio between a hypothetical breakdown of given type of the satellite and a hypothetical absence of breakdown of the satellite, declaration of a breakdown of given type on a satellite based on the probability ratio associated with this breakdown and of a threshold value, estimation of the impact of the breakdown declared on each hybrid navigation solution, and correction of hybrid navigation solutions according to the estimation of the impact of the breakdown declared.
EFFECT: determining the type of breakdown.
14 cl, 3 dwg
