Patent ID: 8436770

Claim:
A method for verifying a location precision performance of a satellite navigation system comprising a space segment transmitting radiolocation signals to a receiver segment, comprising the steps: Measuring, with a system, an estimated error of location of a receiver of the system for a plurality of samples and calculating a maximum location error threshold, being a protection radius, that can be guaranteed by the system for the samples, the estimated error and the protection radius being defined in a dimension of a position frame of reference, calculating, with the system, a first proportion of samples satisfying the conditions: i. the protection radius being less than an alert threshold, ii. a quotient of the protection radius and of the estimated location error being greater than a safety quotient, the safety quotient being a ratio of the alert threshold to a level of requirement of the estimated error, calculating, with the system, a second proportion of samples satisfying the conditions: iii. the protection radius being less than the alert threshold, iv. the quotient of the protection radius and of the estimated location error being less than the safety quotient, v. the estimated location error being less than the level of requirement of the estimated error, and a checking step of comparing the first and the second proportion of samples with a requirement proportion so as to verify a precision performance of the satellite navigation system.