Abstract: A digital tracking phase meter comprising a shaper of narrow pulses corresponding to a leading edge of an input square-shaped signal, connected by the output thereof to one input of a switch, the other input of which is applied to a data output of a phase cycle fraction reversible counter, and the output of which is connected to an input of a pulse counter. A countdown input of said pulse counter is connected to a count pulse generator, and the output thereof is connected to an input of a control pulse distributor switch. The other input of said switch is connected to an input of a control pulse distributor inverter and serves as an input of the digital tracking phase meter, whereas the output thereof is connected to a countup input of said phase cycle fraction reversible counter.

Abstract: Two of three receivers of a receiver-indicator are tuned to the frequencies of a first guided station and first guiding station, second guided station and second guiding station, respectively, and a third receiver is tuned to the frequency of a repeater station. The first and second receivers are connected to inputs of a first signal shaper for shaping electric signals corresponding to the best frequency between the first guided and guiding stations and to the input of a second signal shaper for shaping electric signals corresponding in the heat frequency between the second guided and guiding stations. The third receiver is connected to a third signal shaper for shaping electric signals corresponding to the beat frequency between the first guided and guiding stations and to a fourth signal shaper for shaping electric signals corresponding to the beat frequency between the second guided and guiding stations.

Abstract: The double-channel satellite navigation system according to the invention comprises two identical channels whereof each contains a mixer. The inputs of the two mixers receive the high and low frequency components, respectively, of a double-frequency signal sent by a navigation satellite. Each of the mixers has its output connected to the input of a phase detector. Each of the channels further contains an extrapolator and a commutator which are placed in series. The output of the phase detector is electrically connected to the input of the extrapolator and a second input of the commutator whereof the output is connected to the input of a voltage-controlled oscillator. Finally, the system includes a signal level analyzer intended to analyze the level of signals arriving from the navigation satellite. The signal level analyzer has its output connected to a second input of the extrapolator and a third input of the commutator.