Carrier phase measurements are ex- tremely accurate but ambiguous. The reliabil- ity of integer ambiguity resolution is improving with Galileo which uses a Binary Offset Carrier (BOC) modulation, large signal bandwidths of up to 50 MHz and additional carrier frequencies. In this paper, a group of multi-frequency mixed code carrier linear combinations is derived which preserves geometry, eliminates the iono- spheric delay and maximizes the ratio between wavelength and noise standard deviation of the combination. Moreover, a partial integer decor- relation is suggested to improve the robustness of ambiguity resolution over biases due to orbital errors, satellite clock offsets, and multipath.     «

Carrier phase measurements are ex- tremely accurate but ambiguous. The reliabil- ity of integer ambiguity resolution is improving with Galileo which uses a Binary Offset Carrier (BOC) modulation, large signal bandwidths of up to 50 MHz and additional carrier frequencies. In this paper, a group of multi-frequency mixed code carrier linear combinations is derived which preserves geometry, eliminates the iono- spheric delay and maximizes the ratio between wavelength and noise standard dev...     »