Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis
It is shown that during digital beamforming in a subaperture antenna array of highly informative space radars with synthetic aperture, it is necessary to provide a procedure for equalizing the time delays of the subaperture output signals for transmission and reception. It has been established that...
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| Format: | Article |
| Language: | Russian |
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Educational institution «Belarusian State University of Informatics and Radioelectronics»
2024-01-01
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| Series: | Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki |
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| Online Access: | https://doklady.bsuir.by/jour/article/view/3793 |
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| author | S. V. Kozlov V. V. Radionovich |
| author_facet | S. V. Kozlov V. V. Radionovich |
| author_sort | S. V. Kozlov |
| collection | DOAJ |
| description | It is shown that during digital beamforming in a subaperture antenna array of highly informative space radars with synthetic aperture, it is necessary to provide a procedure for equalizing the time delays of the subaperture output signals for transmission and reception. It has been established that losses in the signal-to-noise ratio on a radar image of a point target for a typical aperture size at an elevation angle of 0.7 m and a signal spectrum width of 600 MHz reach 2.1 and 7.5 dB for off-nadir angles of 21° and 50°, respectively. Recommendations are formulated for equalizing time delays for transmission and reception based on spectral processing. Simulation results are presented. |
| format | Article |
| id | doaj-art-f106aa7ee7564a22b6b8a504e58f9c95 |
| institution | Kabale University |
| issn | 1729-7648 |
| language | Russian |
| publishDate | 2024-01-01 |
| publisher | Educational institution «Belarusian State University of Informatics and Radioelectronics» |
| record_format | Article |
| series | Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki |
| spelling | doaj-art-f106aa7ee7564a22b6b8a504e58f9c952025-08-20T04:00:33ZrusEducational institution «Belarusian State University of Informatics and Radioelectronics»Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki1729-76482024-01-01216707410.35596/1729-7648-2023-21-6-70-741953Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture SynthesisS. V. Kozlov0V. V. Radionovich1Belarusian State University of Informatics and RadioelectronicsBelarusian State University of Informatics and RadioelectronicsIt is shown that during digital beamforming in a subaperture antenna array of highly informative space radars with synthetic aperture, it is necessary to provide a procedure for equalizing the time delays of the subaperture output signals for transmission and reception. It has been established that losses in the signal-to-noise ratio on a radar image of a point target for a typical aperture size at an elevation angle of 0.7 m and a signal spectrum width of 600 MHz reach 2.1 and 7.5 dB for off-nadir angles of 21° and 50°, respectively. Recommendations are formulated for equalizing time delays for transmission and reception based on spectral processing. Simulation results are presented.https://doklady.bsuir.by/jour/article/view/3793radar imageantenna aperture synthesisantenna arraysubapertureenvelope time delayfast fourier transform |
| spellingShingle | S. V. Kozlov V. V. Radionovich Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki radar image antenna aperture synthesis antenna array subaperture envelope time delay fast fourier transform |
| title | Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis |
| title_full | Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis |
| title_fullStr | Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis |
| title_full_unstemmed | Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis |
| title_short | Digital Beamforming Features in Subaperture Antenna Arrays of Highly Informative Space Radars with Aperture Synthesis |
| title_sort | digital beamforming features in subaperture antenna arrays of highly informative space radars with aperture synthesis |
| topic | radar image antenna aperture synthesis antenna array subaperture envelope time delay fast fourier transform |
| url | https://doklady.bsuir.by/jour/article/view/3793 |
| work_keys_str_mv | AT svkozlov digitalbeamformingfeaturesinsubapertureantennaarraysofhighlyinformativespaceradarswithaperturesynthesis AT vvradionovich digitalbeamformingfeaturesinsubapertureantennaarraysofhighlyinformativespaceradarswithaperturesynthesis |