FORMATION ANALYSIS OF MULTI-FREQUENCY SIGNALS OF LASER INFORMATION MEASURING SYSTEM

Sergey Herasimov, Oleksandr Tymochko, Oleksii Kolomiitsev, Gennadiy Aloshin, Oleksandr Kriukov, Oleksandr Morozov, Volodymyr Aleksiyev

Abstract


Improving the accuracy of measuring motion parameters and the volume of information exchange with aircraft requires the modern development of multifunctional radio systems that allow the combination of information and measuring channels due to frequency (time) signal selection. However, radio systems have limitations on the number and accuracy of the measurement of aircraft motion parameters, as well as information transfer rates. These restrictions will make it possible to remove laser systems for measuring with high accuracy the parameters of motion of aircraft. Similar laser systems are widely used in transmitting information to stationary or quasi-stationary objects. As a result, there was a need to overcome the contradiction between the requirements for the technical characteristics of radio systems and the capabilities of the existing scientific and methodological apparatus for synthesizing the signals of laser information-measuring systems for monitoring the parameters of aircraft motion. The theoretical foundations of the formation and selection of laser signals for combining the information and measuring channels of laser information-measuring systems are proposed and investigated. A comparison is made with known methods of combining (combining) the information and measuring channels of radio engineering systems and the features of using a spectrum of laser radiation formed by pairs of longitudinal modes that “color” each channel signal for their selection at reception. When receiving optical pairs of longitudinal modes, the intermode beat frequencies turn into radio engineering subcarriers that are well filtered and selectable. Based on the results of mathematical modeling and combinations of longitudinal modes, the choice of elements of a modified selector of longitudinal modes of laser information-measuring systems is substantiated. This determines the importance and usefulness of work for applied systems for measuring the parameters of movement of aircraft.


Keywords


aircraft; laser information-measuring system; laser radiation spectrum; intermode beat frequency

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DOI: http://dx.doi.org/10.21303/2461-4262.2019.00984

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Copyright (c) 2019 Sergey Herasimov, Oleksandr Tymochko, Oleksii Kolomiitsev, Gennadiy Aloshin, Oleksandr Kriukov, Oleksandr Morozov, Volodymyr Aleksiyev

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ISSN 2461-4262 (Online), ISSN 2461-4254 (Print)