Patent ID: 8355867

Claim:
A method for controlling the navigation system of a carrier (P) receiving signals from a plurality of transmitters (T 1 -T 3 ) and capable of measuring for each transmitter a set of raw navigation parameters including a pseudo-distance to the transmitter, wherein the elevation of each of the transmitters (T 1 -T 3 ) is checked relative to the horizontal (H) of the carrier (P) and a navigation solution is obtained from pseudo-distances (Pd-a) for which the elevation of the corresponding transmitter is higher than a minimum elevation (Em), wherein method includes the steps of: carrying out a multiple paths discrimination among the pseudo-distances ( Pd-a ) measured for the transmitters (T 3 ) for which the elevation is lower than the minimum elevation (Em), said discrimination including, for each transmitter for which the elevation is lower than the minimum elevation checking the consistency of a raw navigation measurement measured for the transmitter with a navigation solution obtained exclusively from the pseudo-distances measured for the transmitters for which the elevation is higher than the minimum elevation, and further retaining the pseudo-distances (Pd-ad) authorized after said discrimination in the obtained navigation solution.