Method For Processing A Set Of Signals Of A Global Navigation Satellite System With At Least Three Carriers

A navigation device for a global navigation satellite system, which is arranged for processing a set of navigation signals of a global navigation satellite system with at least three carrier signals in which the processing of the navigation signals is based on a linear combination of phase measurements of the carrier signals to a combined phase signal, wherein a phase ambiguity of the combined phase signal is an integer multiple of a combined wavelength associated with the combined phase signal and that the combined phase signal is free from geometry and free from frequency-independent disturbance variables.