Synthesis of an optimal digital filter of a compensation radiometer for radiometric correlation-extreme navigation systems of unmanned aerial vehicles

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.230176

Keywords:

unmanned aerial vehicles, correlation-extreme navigation systems, digital filter, weight coefficients

Abstract

The expediency of using a compensation radiometer (CR) with periodic absolute calibration as a sensor for preprocessing the information of correlation-extreme navigation systems (CENS) of unmanned aerial vehicles (UAV) was shown. This is determined by the possibility of obtaining and using the estimates of gain fluctuations obtained in previous frames which will provide an increase in the radiometer sensitivity. In addition, due to the accumulation of information, an increase in accuracy of measurement of the elements of the current image formed by the CENS will be provided.

The algorithm of processing the obtained calibration estimates during linear processing corresponds to a certain digital filter (DF). By defining a set of the DF weight coefficients, it is possible to improve the CR fluctuation sensitivity by reducing the gain fluctuations. Up to 1.8-time gain in sensitivity can be reached for typical frequency and time parameters of the compensation radiometer of UAV CENS.

The problem of synthesis of a digital filter was set. A solution to the problem of synthesizing an optimal digital filter was proposed. Its use in a CR will improve the fluctuation sensitivity. In its turn, this will make it possible to improve the quality of a current image generated by the system when siting by means of sighting surfaces with low-contrast objects taking into account fluctuations in radio-brightness temperature.

It was found that the gain in sensitivity when using the optimal digital filter increases with an increase in the operating period of the radiometer and an increase in the digital filter order.

Improvement of fluctuation sensitivity of the CENS data preprocessing system is important for UAV location in low-contrast areas

Author Biographies

Nataliia Yeromina, Kharkiv National University of Radio Electronics

PhD, Senior Lecturer

Department of Electronic Computers

Serhii Petrov, Ukrainian Engineering Pedagogics Academy

PhD, Associate Professor

Department of Physics, Electrical Engineering and Power Engineering

Maksym Volk, Kharkiv National University of Radio Electronics

Doctor of Technical Sciences, Professor

Department of Electronic Computers

Olena Daki, Danube Institute of Water Transport

Doctor of Technical Sciences, Associate Professor

Department of Navigation and Operation of Technical Systems on Water Transport

Volodymyr Cherednyk, State University of Infrastructure and Technology

PhD, Associate Professor

Department of Ship Power Plants, Auxiliary Mechanisms and Their Operation

Iryna Zinchenko, Military Institute of Telecommunications and Information Technologies named after Heroes of Kruty

Junior Researcher

Scientific Center of Information Protection

Ihor Chernykh, National Defence University of Ukraine Named After Ivan Cherniakhovskyi

PhD, Associate Professor, Deputy Head of the Institute

Oleksiy Alekseienko, National Defence University of Ukraine Named After Ivan Cherniakhovskyi

Scientific and Methodological Center of Scientific, Scientific and Technical Activities Organization

Serhii Mykus, National Defence University of Ukraine Named After Ivan Cherniakhovskyi

Doctor of Technical Sciences, Associate Professor, Head of Department

Department of Information Technology and Information Security Employment

Institute of the Troops (Forces) Support and Information Technologies

Volodymyr Furdyk, National Defence University of Ukraine Named After Ivan Cherniakhovskyi

Department of Combat Service Support

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Published

2021-04-30

How to Cite

Yeromina, N., Petrov, S., Volk, M., Daki, O., Cherednyk, V., Zinchenko, I., Chernykh, I., Alekseienko, O., Mykus, S., & Furdyk, V. (2021). Synthesis of an optimal digital filter of a compensation radiometer for radiometric correlation-extreme navigation systems of unmanned aerial vehicles. Eastern-European Journal of Enterprise Technologies, 2(9 (110), 79–86. https://doi.org/10.15587/1729-4061.2021.230176

Issue

Vol. 2 No. 9 (110) (2021): Information and controlling system

Section

Information and controlling system

License

Copyright (c) 2021 Наталія Сергіївна Єрьоміна, Сергій Валерійович Петров, Максим Олександрович Волк, Олена Анатоліївна Дакі, Володимир Миколайович Чередник, Ірина Анатоліївна Зінченко, Ігор Вікторович Черних, Олексій Вікторович Алексеєнко, Сергій Анатолійович Микусь, Володимир Данилович Фурдик

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