METHOD FOR DISCLOSURE OF THE STRUCTURE OF NONLINEAR RECURRENCE SEQUENCES AS CODES OF QUADRATIC RESIDUES EXISTING IN SIMPLE GALOIS FIELDS GF(P) AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC H03M7/00 H04L9/22 

FIELD: data processing.

SUBSTANCE: invention relates to data processing methods and devices in broadband radio communication and radio navigation. Result is achieved due to the fact that the received broadband signal after demodulation turns into a binary sequence, which in the form of a definite number ℓ of precisely known favorable values the symbols of the codes of quadratic residues (CQR) are sequentially fed to the input of the device for disclosure of the structure of nonlinear recurrence sequences (NLRS) in the form of CQRs existing in simple Galois fields GF(p). Device generates a valid value μ_r r-th character of the sequence for a given characteristic of the sequence and compares the actual value μ_r with favorable . With the difference in these values, the sequence characteristic is modified until the sequence is found out.

EFFECT: technical result is broader functional capabilities of the device for forming elements of the multiplicative groups of Galois fields GF(p) to perform a function of disclosing the structure of NLRS in the form of CQR.

2 cl, 6 dwg