A navigation-satellite tracking method includes determining one-way range unambiguous observations for each of a set of satellites in view, wherein standard tracking channels are permanently associated to each of the satellites. Determining the one-way range unambiguous observations may include determining one-way range unambiguous and one-way range ambiguous observations with a nearly-hemispherical antenna at a measurement time tA for each satellite out of the set of satellites in view simultaneously; sequentially determining an additional one-way range unambiguous observation and an additional one-way range ambiguous observation with at respectively different further measurement times tA+kΔt; and transforming, satellite per satellite, the additional one-way range unambiguous observations in one-way range unambiguous observations referred to a common future time, wherein this transformation is achieved by adding to each of the one-way range unambiguous observations the temporal evolution of the one-way range ambiguous observations of the respective satellite.