OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE
The task of synthesizing optimal signal processing in synthetic aperture radars equipped with a selection mode of power lines was solved by the maximum likelihood method. The distinguishing features of power lines from the earth's surface selected polarization and Doppler differences. The usefu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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National Aerospace University «Kharkiv Aviation Institute»
2020-08-01
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| Series: | Авіаційно-космічна техніка та технологія |
| Subjects: | |
| Online Access: | http://nti.khai.edu/ojs/index.php/aktt/article/view/1185 |
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| author | Валерій Костянтинович Волосюк Володимир Володимирович Павліков Семен Сергійович Жила Володимир Віталійович Кошарський Олексій Володимирович Одокієнко Едуард Олексійович Церне |
| author_facet | Валерій Костянтинович Волосюк Володимир Володимирович Павліков Семен Сергійович Жила Володимир Віталійович Кошарський Олексій Володимирович Одокієнко Едуард Олексійович Церне |
| author_sort | Валерій Костянтинович Волосюк |
| collection | DOAJ |
| description | The task of synthesizing optimal signal processing in synthetic aperture radars equipped with a selection mode of power lines was solved by the maximum likelihood method. The distinguishing features of power lines from the earth's surface selected polarization and Doppler differences. The useful signal at the output of the coherent receiver specified in an analytical form with a complex envelope and high-frequency harmonic oscillations. The background radiation of the underlying surface is presented in a stochastic form and is completely determined by the matrix of correlation functions. The internal noise of a multichannel receiver is described by a delta-correlated random Gaussian process with the same power spectral density in different observation channels. Since the background radiation of the earth's surface is correlated in time and at different polarizations functional likelihood recorded with the inverse matrix inverse correlation functions. The obtained optimal algorithm consists of suppression of passive interference in decor-leveling filters, optimal coherent accumulation of trajectory signals for synthesizing the on-board antenna aperture, and their optimal filtering in filters matched with the reference signal. Simultaneous use of Doppler and polarization differences between wanted signals and passive interference allows you to effectively allocate power lines against the background of reflections from the ground in multichannel synthetic aperture radars. The proposed sequence of operations on the received oscillations can be a functional addition to the operating modes of aerospace-based cognitive radars, adapting by the covariance scattering matrix of the underlying surface known in advance or measured during remote sensing. The block diagram of a multichannel onboard polarization radar with a synthesized antenna aperture is synthesized based on the obtained results. The development of such a radar is relevant for a collision warning system for helicopter pilots, especially in bad weather conditions at any time of the year, day and night. |
| first_indexed | 2024-03-12T20:19:06Z |
| format | Article |
| id | doaj.art-0c7aba34f1e64d49a3a299efe94f56f8 |
| institution | Directory Open Access Journal |
| issn | 1727-7337 2663-2217 |
| language | English |
| last_indexed | 2024-03-12T20:19:06Z |
| publishDate | 2020-08-01 |
| publisher | National Aerospace University «Kharkiv Aviation Institute» |
| record_format | Article |
| series | Авіаційно-космічна техніка та технологія |
| spelling | doaj.art-0c7aba34f1e64d49a3a299efe94f56f82023-08-02T01:02:20ZengNational Aerospace University «Kharkiv Aviation Institute»Авіаційно-космічна техніка та технологія1727-73372663-22172020-08-010510310810.32620/aktt.2020.5.131204OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACEВалерій Костянтинович Волосюк0Володимир Володимирович Павліков1Семен Сергійович Жила2Володимир Віталійович Кошарський3Олексій Володимирович Одокієнко4Едуард Олексійович Церне5Національний аерокосмічний університет ім. М. Є. Жуковського «Харківський авіаційний інститут», ХарківНаціональний аерокосмічний університет ім. М. Є. Жуковського «Харківський авіаційний інститут», ХарківНаціональний аерокосмічний університет ім. М. Є. Жуковського «Харківський авіаційний інститут», ХарківНаціональний аерокосмічний університет ім. М. Є. Жуковського «Харківський авіаційний інститут», ХарківНаціональний аерокосмічний університет ім. М. Є. Жуковського «Харківський авіаційний інститут», ХарківНаціональний аерокосмічний університет ім. М. Є. Жуковського «Харківський авіаційний інститут», ХарківThe task of synthesizing optimal signal processing in synthetic aperture radars equipped with a selection mode of power lines was solved by the maximum likelihood method. The distinguishing features of power lines from the earth's surface selected polarization and Doppler differences. The useful signal at the output of the coherent receiver specified in an analytical form with a complex envelope and high-frequency harmonic oscillations. The background radiation of the underlying surface is presented in a stochastic form and is completely determined by the matrix of correlation functions. The internal noise of a multichannel receiver is described by a delta-correlated random Gaussian process with the same power spectral density in different observation channels. Since the background radiation of the earth's surface is correlated in time and at different polarizations functional likelihood recorded with the inverse matrix inverse correlation functions. The obtained optimal algorithm consists of suppression of passive interference in decor-leveling filters, optimal coherent accumulation of trajectory signals for synthesizing the on-board antenna aperture, and their optimal filtering in filters matched with the reference signal. Simultaneous use of Doppler and polarization differences between wanted signals and passive interference allows you to effectively allocate power lines against the background of reflections from the ground in multichannel synthetic aperture radars. The proposed sequence of operations on the received oscillations can be a functional addition to the operating modes of aerospace-based cognitive radars, adapting by the covariance scattering matrix of the underlying surface known in advance or measured during remote sensing. The block diagram of a multichannel onboard polarization radar with a synthesized antenna aperture is synthesized based on the obtained results. The development of such a radar is relevant for a collision warning system for helicopter pilots, especially in bad weather conditions at any time of the year, day and night.http://nti.khai.edu/ojs/index.php/aktt/article/view/1185метод максимальної правдоподібностіполяризаційні характеристикисинтез апертури антениматриця кореляційних функцій |
| spellingShingle | Валерій Костянтинович Волосюк Володимир Володимирович Павліков Семен Сергійович Жила Володимир Віталійович Кошарський Олексій Володимирович Одокієнко Едуард Олексійович Церне OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE Авіаційно-космічна техніка та технологія метод максимальної правдоподібності поляризаційні характеристики синтез апертури антени матриця кореляційних функцій |
| title | OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE |
| title_full | OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE |
| title_fullStr | OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE |
| title_full_unstemmed | OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE |
| title_short | OPTIMIZATION OF THE STRUCTURE A MULTI-CHANNEL ON-BOARD RADAR WITH ANTENNA APERTURE SYNTHESIS AND ALGORITHM FOR POWER LINE SELECTION ON THE BACKGROUND OF THE EARTH SURFACE |
| title_sort | optimization of the structure a multi channel on board radar with antenna aperture synthesis and algorithm for power line selection on the background of the earth surface |
| topic | метод максимальної правдоподібності поляризаційні характеристики синтез апертури антени матриця кореляційних функцій |
| url | http://nti.khai.edu/ojs/index.php/aktt/article/view/1185 |
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