PAIRED D-CODE PROCESSING DEVICE Russian patent published in 2021 - IPC H04B1/10 H04J13/10 

FIELD: coding theory/telecommunication.

SUBSTANCE: technical result consists in eliminating the side lobes of the resulting autocorrelation function of the D-code pair in the presence of the Doppler frequency shift of the received signal and reducing the noise (interference) level of the output signal. The device for processing a D-code pair contains a first filter matched with one sequence of a D-code pair, a second filter matched with another sequence of a D-code pair, the inputs of the filters are the inputs of the device, as well as an adder; according to the invention, the following are introduced connected in series - the first subtractor, first module calculator, a second subtractor, a low-pass filter and a lower limiter at the zero level, the output of which is the output of the device, while the output of the first matched filter is connected to the combined first inputs of the adder and the first subtractor, the output of the second matched filter is connected to the combined second inputs of the adder and the first subtractor, as well as the second calculator of the module, the input of which is connected to the output of the adder, and the output is connected to the second input of the second subtractor.

EFFECT: increased efficiency of the resulting error corrective function of the paired D code, lowered interference.

1 cl, 10 dwg