MULTIFREQUENCY RECEIVER OF SIGNALS OF GLOBAL NAVIGATION SATELLITE SYSTEMS Russian patent published in 2022 - IPC G02B23/00 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering, namely, to the field of radio navigation; it can be used in the construction of receivers of Global Navigation Satellite Systems (hereinafter – GNSS), in particular, receivers of GLONASS GNSS (Russia), GPS (USA), Galileo (European Union), Beidou (PRC), QZSS (Japan), IPNSS (India), SBAS. The receiver consists of sequentially connected antenna unit, signal compaction unit, analogue radiofrequency converter, digital frequency converter (DFC), signal packet memory, packet tuner, packet correlation unit, and frequency analysis unit, as well as reference frequency generator, an output of which is connected to an input of a reference frequency of the radiofrequency converter, storage memory unit, an input of which is connected to an output of the correlation unit and an input and an output of the frequency analysis unit, real-time tracking channel unit, an input of which is connected to the second output of the digital frequency converter via a real-time decompaction code generator, an input of which is connected to the second output of the signal compaction unit, processor with a memory unit and interface units, an input/output of which is connected to an input/output of the packet correlation unit, the frequency analysis unit, the storage memory unit, the real-time tracking channel unit, and the signal compaction unit with a digital data bus, the second input of the correlation unit is connected to the second output of signal packet memory via the packet decompaction code generator, the third output of signal packet memory is connected to the second input of the signal compaction unit, the second input/output of the processor is an external information input/output of the receiver.

EFFECT: increase in sensitivity, accuracy, and noise protection of a multisystem multifrequency receiver of GNSS, including GNSS with frequency separation of signals, for example, GLONASS, due to both digital processing of signals in accelerated time, and increase in the ratio of signal power to noise and/or interference power due to digital formation of a beam of a directional diagram of a phased antenna array.

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