DEVICE FOR SPATIAL SELECTION OF SIGNALS OF NAVIGATION SPACE VEHICLES WITH THE USE OF DIRECTION FINDING FOR INTERFERENCE SOURCES Russian patent published in 2017 - IPC H01Q3/36 G01S3/74 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a device increasing the resistance of the users navigational equipment (UNE) of the global navigation satellite system (GNSS) installed in land mobile means to the effect of radio interference by spatial selection of signals from navigation space vehicles (NSV) using a controlled phased array (PA) connected to the input of the GNSS UNE receiver. Functioning of the proposed device does not require a reference signal that coincides in structure and initial phase with the signals of the UNE. Therefore, the device provides spatial selection of UNE signals when the GNSS UNE operates both in the signal automatic tracking mode and in the search and pickup mode for automatic tracking. It is achieved by that the known PA device, which consists of an antenna array with antenna elements, units of beam-forming multipliers, a combiner unit, PA controller unit and output to the GNSS UNE, is additionally equipped with a commutator switch, master reception channel consisting of a mixer of the master reception channel, an intermediate frequency amplifier (IFA) of the master reception channel, an analog-digital converter (ADC) of the master reception channel, with a slave reception channel consisting of a mixer of the slave reception channel, an IFA of the slave reception channel, an ADC of the slave reception channel, a local oscillator, a phase detector, a controller calculating the coordinates of the jammer. There is no radio interference in the output signal of the combiner, since the level of the PA radiation pattern in the direction of its arrival is set equal to zero, and the NSV signals are fed to the input of the GNSS UNE receiver without distortion of their reciprocal phase structure.

EFFECT: spatial selection of signals from navigation space vehicles using the direction finding of radio interference sources.

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