DIGITAL DETECTOR OF PHASE-ANIMATED SIGNALS Russian patent published in 2017 - IPC H04B1/10 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to the field of radio engineering and can be used in devices for detecting occupancy and monitoring the communication channel with phase-shift keyed (PSK) signals in multi-channel radio communication systems, radio receiver control and digital modems with PSK signals, as well as radio reconnaissance of radio communication systems with PSK signals. The digital detector comprises an analog-to-digital converter, a four-sample shift register for codes, a first and a second n-stage quadrature signal processing channels, each of which contains sequentially connected sample processing blocks, each of these units consists of a shift register of multi-bit codes and an adder, an input narrowband filter, a frequency multiplier, first and second subtractors, first and second quadratic converters, a decision device.

EFFECT: increasing noise immunity and simplifying the hardware implementation of the digital detector for phase-manipulated signals by increasing the signal level relative to the noise level at the output of the device and estimating the noise level to form the decision threshold for the presence of the signal.

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