Side lobe suppression device for pulsed compression of multiphase codes P3

摘要

FIELD: radio engineering, communication.SUBSTANCE: sidelobe suppression device for pulsed compression of multiphase P3 codes comprises an input-coupled modified Woo filter for P3 code of odd length N and a generator of digital correcting signal from the series-connected code converter to complex conjugated code and digital filter with finite impulse response of the FIR filter of order N+1 with (N+2) coefficients -1,1, 0, …0, -1.1, an output of the adder connected to the first input, a delay line for the duration of one code element, and a two-input subtractor where the output of filter Woo is connected to the input of delay line and to the first input of subtracter, the output of the adder connected to the second input, and the second input of subtracter is connected to the output of delay line, the first coefficient of modified Woo filter impulse response is equal to 1 - exp(iπ/N), where, and (N+2) is dimensional vector of coefficients of digital correcting signal generator filter is respectively equal to -1,1, 0,0, …0, -1,1.EFFECT: providing sidelobe suppression for odd-length P3 code.2 dwg