Method of determination of the parameters of the navigation of a carrier and hybridization device a bank of filters kalman

摘要

Method of determining the parameters of the navigation of a carrier by a hybridization device comprising a frame (3) of the kalman filters each developing a solution of navigation hybrid from the inertial measurements are calculated by a virtual platform (2) and of the crude measurements of the signals emitted by a satellite constellations delivered by a satellite positioning system (gnss), characterized in that it comprises the steps of: - determination, for each satellite, of at least a likelihood ratio between a hypothesis of failure of a given type of the satellite and the case of absence of failure of the satellite - statement, of a failure of a given type on a satellite as a function of the ratio of probability associated with this fault and a threshold value, - estimation of the impact of a failure on each navigation solution of a hybrid and - if a fault is declared, correction of the solutions of navigation hybrids as a function of the estimation of the impact of the failure.