ISSN 1991-2927
 

ACP № 3 (61) 2020

Author: "Ivan Iurevich Davydov"

Ivan Iurevich Davydov, Ulyanovsk State Technical University, graduated with a Master degree from Ulyanovsk State Technical University in Telecommunication Technologies and Communication Systems; a postgraduate student of the Department of Telecommunications of Ulyanovsk State Technical University; an author of articles in the field of error-proof coding and information security. [e-mail: 1Davydov2i@gmail.com]I. Davydov,

Denis Aleksandrovich Kozlov, Ulyanovsk Transport (Aviation) Security Center, graduated from the Ulyanovsk Institute of Civil Aviation; Head of Ulyanovsk Transport (Aviation) Security Center; a postgraduate student of the Department of Aviation Security Assurance at the Ulyanovsk Institute of Civil Aviation named after Chief Air Marshal B.P. Bugaev; an author of articles in the field of aviation security. [e-mail: peccab@mail.ru]D. Kozlov,

Sergei Valentinovich Shakhtanov, Nizhny Novgorod State University of Engineering and Economics, Cgraduated from the Leningrad Higher Military Engineering School of Communications; Senior Lecturer of the Department of Infocommunication Technologies and Communication Systems at the Nizhny Novgorod State University of Engineering and Economics; an author of publications in the field of error-proof coding and information protection. [e-mail: r155p@bk.ru]S. Shakhtanov,

Mariia Iurevna Shibaeva, Nizhny Novgorod State University of Engineering and Economics, graduated from the Faculty of Information Technologies and Communication Systems at the Nizhny Novgorod State University of Engineering and Economics; Master’s Degree Student of the Department of Infocommunication Technologies and Communication Systems at the Nizhny Novgorod State University of Engineering and Economics; an author of publications in the field of error-proof coding and information protection. [e-mail: shibaevamarya@yandex.ru]M. Shibaeva

Permutation Decoding in the System of Combinations Code Designs in the Evaluation of Biometric Data 56_10.pdf

State-of-the-art telecommunication systems and means of data protection against natural and anthropogenic interference in the form of redundant codes are increasingly used in various applications related to the processing of biometric data. A large volume of publications in this subject area is devoted to codes with a low density of parity checks, polar codes, turbocodes with iterative data transformations that implement the algorithm of "belief propagation". These code constructions provide the required probabilistic characteristics but the procedure of decoding such codes takes long time intervals, which is unacceptable in terms of the duration of the cycle of biometric data management in systems critical to time delays. The paper proposes to use the principle of permutation decoding (PD), which is applied to systematic block codes. This method allows to fully use the corrective capabilities of redundant codes but in the classical interpretation requires cumbersome matrix calculations, which does not allow to use the positive properties of the method for error correction. The complexity of the computational process is excessively high. Therefore, to reduce the negative effect in the PD system, it is proposed to use the cognitive principle of data processing at the channel level, which significantly reduces the complexity of the decoder implementation and ensures the use of PD in the control systems of biometric data of subjects, for example, in the automation of transport security processes. Special attention is paid to the combination of codes in the format of cascade coding. For the first time, a description of such a scheme is given for polar codes and nonbinary Reed-Solomon (RS) codes.

Soft symbol solution, permutation decoding, cognitive map decoder, concatenated code.

2019_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling, Artificial intelligence.



Dmitrii Vladimirovich Ganin, Engineering Economics State University of Nizhniy Novgorod, Сandidate of Economics, Associate Professor; Vice-rector for Research and Innovative Development of Engineering Economics State University of Nizhniy Novgorod; an author of 35 articles including ones on communication science. [e-mail: ngiei135@mail.ru]D. Ganin,

Ivan Iurevich Davydov, Ulyanovsk State Technical University, Candidate for the Master’s Degree at the Department of Telecommunications of Ulyanovsk State Technical University; an author of two articles in the field of information theory. [e-mail: 1Davydov2i@gmail.com]I. Davydov

Generalized Procedure of Brightness Comparison of Printed Circuit Boards Images of Radiographs 000_10.pdf

The article describes an approach to automated visual inspection of printed circuit boards including one on the basis of their radiographs. The authors analyzed the characteristics of x-ray images of printed circuit boards. The paper shows the lack of efficiency used in the framework of the task of verification of radiographs, the existing methods comparing two images by analyzing a histogram or search of keypoints. Based on that, the authors propose a new algorithm for the verification of printed circuit boards based on the comparison of their radiographic images. The comparison is based on the iterative procedure of matching of the binary representations of the studied images and their subsequent fragmentation. The obtained fragments are subjected to an iterative luminance mapping. Generated matching results are suitable for further expert studies with the use of automated systems. The algorithm allows to achieve high accuracy mapping. The authors consider the main features of the algorithm enhancing the performance of its work and the quality of the matching of the processed images. In the paper we propose some optimization of the algorithm.

Automatic inspection of multilayer printed circuit boards, images of radiographs, morphological analysis, luminance mapping.

2017_ 2

Sections: Information systems

Subjects: Information systems.


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