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MULTI-CRITERIA APPROACH TO SELECT THE PROCEDURE OF TELEMETRIC RADIO SIGNALS CODING IN COMPLEX TECHNICAL OBJECTS

S. N. Kirillov, Dr. in technical sciences, full Professor, Head of the Department of Radio control and Communications, RSREU, Ryazan, Russia;
orcid.org/0000-0002-3673-5709, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A. A. Lisnichuk, PhD (technical sciences), Associate Professor of the Department of Radio control and Communications, RSREU, Ryazan, Russia;
orcid.org/0000-0001-6562-6942, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
P. S. Pisaka, PhD (technical sciences), Senior Lecturer at the Department of Radio control and Communications, RSREU, Ryazan, Russia;
orcid.org/0000-0002-5399-5238, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
K. V. Gribko, master student of the Department of Radio control and Communications, RSREU, Ryazan, Russia;
orcid.org/0000-0002-4385-8563, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The issues of improving the quality of the results in telemetric information processing are considered in the interests of an objective assessment of the state of complex technical objects (STO) in the process of testing. The aim of the work is to develop a multi-criteria procedure for choosing an encoder (decoder) of telemetric radio signals of a service station, which ensures resistance to the influence of interfering factors in transmission channel. Comparison of known encoders efficiency is made according to the following criteria: the ratio of radio signal energy per one message bit to the average value of noise power Eb/ N0 with undetectable error rate after decoding less than 10-9, the delay (in bits) between the moment when a source bit appears in channel encoder and the moment of bit reproduction in a decoder neglecting transmission delay, the number of computational operations per bit during decoding, the amount of memory (in Kbits) required to decode a code of a certain type. Multi-criteria approach has shown that a compromise between increased error correction of telemetric radio signals and reduced requirements to hardware costs for decoding requires the application of CC (3.1 / 2), CC (5.1 / 2), LDPC codes (128, 64) and LDPC (256,128), providing the decrease in indicator value Eb/ N0 on 3,8 – 9,9 dB relative to uncoded channel.

Key words: radio signal, telemetry information, error-correcting coding, multi-criteria approach, complex technical object.

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