METHOD FOR GENERATION OF SETS OF ORTHOGONAL PSEUDORANDOM SEQUENCES WITH APPLICATION OF PROPERTIES OF FRACTAL IMAGES Russian patent published in 2009 - IPC H04B1/00 

FIELD: physics, radio.

SUBSTANCE: invention is related to the field of radio engineering, in particular, to methods for generation of sets of orthogonal pseudorandom code sequences used in radiolocating, radio navigation and communication systems, which use pseudorandom phase-manipulated signals and code division of access channels. During formation of pseudorandom sequences (PRS) set, initial PRS that consists of N_prs symbols is once recorded into entry register of recurrent generator, at that in order to generate periodic exit PRS, interlacing of initial PRS symbols is carried out cyclically by N_max clock pulses in every cycle in compliance with law of fractal reflection with chaotic dynamics. For this purpose at every i clock pulse of interlacing, n_i symbol of entry PRS is read from entry register and recorded as I symbol of exit PRS, and number n_i of initial PRS symbol subject to interlacing is calculated by recurrent rule n_i =f(n₀,k,n_i-1), i=1…N_max, at that structure of exit PRS is defined through value of initial setting of interlacing device p₀ and through value of integer multiplier k=1, 2, 3… which are constant in the whole range of interlacing, and formation of N_max symbols of exit PRS is cyclically repeated to generate continuous PRS of interlacing.

EFFECT: increased structural security of generated PRS, reduced level of side lobes of VKF PRS of single set.

3 dwg, 1 tbl