Patent ID: 8094065

Claim:
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 by a processor in which the processing of the navigation signals is based on a linear combination of phase measurements of the at least three 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, wherein the combined phase signal is free from geometry and free from frequency-independent disturbance variables, wherein N phase measurements φ i of the carrier signals with wavelength λ i are combined to form a geometry-free combination using the weighting coefficients α i according to: ϕ LC = ∑ i = 1 N ≥ 3 ⁢ α i ⁢ ϕ i with α i = n i ⁢ λ λ i and ∑ i = 1 N ≥ 3 ⁢ α i = 0 n i being integer numbers.