A method for processing radionavigation signals coming from satellites that broadcast the radionavigation signals on at least two distinct frequencies, comprises receiving the signals for each satellite, realizing, for each satellite, non-differentiated measurements of code and phase (10), determining the widelane ambiguities in a coherent manner on the group of satellites (12, 13, 14) by using the widelane biases associated with the satellites, received from a reference system, and global positioning of the receiver with the help of measurements of code and phase and the coherent widelane ambiguities (16, 18). The global positioning comprises, for each satellite, the determination (16) of a pseudo distance by means of an ionosphere-free combination of the measurements of code and of the difference of the phase measurements, compensated for the widelane ambiguity, this ionosphere-free combination being optimized in terms of noise. The pseudo distance is determined by receiving the satellite clock values associated with the ionosphere-free combination from the reference system.