Abstract: The Global Satellite Navigation System GLONASS, whose development is finished in 1995, is created for providing the determination of navigation parameters of objects on Earth and in space around it such as coordinates, velocity, time. The possibilities of the system functions by means of phase methods are considered in the paper. The measuring of the signal phase of the drift permits to carry out the determination of an angular position in space as well as to provide the measurement of relative coordinates with highest accuracy (the accuracy of order centimeter and millimeter). The general principles of the elimination a single meaning absence of phase samples are considered.
Key words: Global satellite navigation system.