The method for increasing noise immunity of any user equipment (UE) of navigation systems GPS/GLONASS is offered, in which the known principles of an adaptive frequency and spatial rejection of interferences will not be used. The method is based on know-how of preliminary non-linear processing of a received signal with executing compression of its amplitude range with maximization of a signal-to-interference ratio. The principles of construction of such non-linear processing devices and the results of their application for protection of user equipment against effect of powerful narrow-band and broad-band interferences are estimated.