Mainlobe maintenance for FDA-MIMO radar
During radar detection, the adaptive beamforming technique needs to create nulls to resist the interference. When the interference appears within the mainlobe, the main detection beam will become distorted. To solve this problem, a new method for the covariance matrix reconstruction is proposed for...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0099177 |
| _version_ | 1818031787580850176 |
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| author | YanJie Xu ChunYang Wang Jian Gong YingJian Zhao ChangLin Zhou |
| author_facet | YanJie Xu ChunYang Wang Jian Gong YingJian Zhao ChangLin Zhou |
| author_sort | YanJie Xu |
| collection | DOAJ |
| description | During radar detection, the adaptive beamforming technique needs to create nulls to resist the interference. When the interference appears within the mainlobe, the main detection beam will become distorted. To solve this problem, a new method for the covariance matrix reconstruction is proposed for the mainlobe maintenance problem, and a worst-case performance optimization (WCPO) algorithm with enhanced waveform robustness is obtained. Its integration is performed over a known region without the target information to obtain the improved covariance matrix, which is then brought into the convex optimization equation to solve for the weight vector. Simulation results show that the output signal-to-noise ratio of this algorithm is higher than that of the conventional WCPO algorithm with a robust beam for the same signal-to-noise ratio. It can also effectively eliminate the primary lobe offset and secondary lobe elevation problems. |
| first_indexed | 2024-12-10T05:57:02Z |
| format | Article |
| id | doaj.art-84ea2c6be22a4e758c69ac77e07a2227 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-10T05:57:02Z |
| publishDate | 2022-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-84ea2c6be22a4e758c69ac77e07a22272022-12-22T01:59:55ZengAIP Publishing LLCAIP Advances2158-32262022-08-01128085305085305-810.1063/5.0099177Mainlobe maintenance for FDA-MIMO radarYanJie Xu0ChunYang Wang1Jian Gong2YingJian Zhao3ChangLin Zhou4School of Air and Missile Defense, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaSchool of Air and Missile Defense, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaSchool of Air and Missile Defense, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaSchool of Electronic Science, National University of Defense Technology, Changsha 410000, Hunan, ChinaSchool of Air and Missile Defense, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaDuring radar detection, the adaptive beamforming technique needs to create nulls to resist the interference. When the interference appears within the mainlobe, the main detection beam will become distorted. To solve this problem, a new method for the covariance matrix reconstruction is proposed for the mainlobe maintenance problem, and a worst-case performance optimization (WCPO) algorithm with enhanced waveform robustness is obtained. Its integration is performed over a known region without the target information to obtain the improved covariance matrix, which is then brought into the convex optimization equation to solve for the weight vector. Simulation results show that the output signal-to-noise ratio of this algorithm is higher than that of the conventional WCPO algorithm with a robust beam for the same signal-to-noise ratio. It can also effectively eliminate the primary lobe offset and secondary lobe elevation problems.http://dx.doi.org/10.1063/5.0099177 |
| spellingShingle | YanJie Xu ChunYang Wang Jian Gong YingJian Zhao ChangLin Zhou Mainlobe maintenance for FDA-MIMO radar AIP Advances |
| title | Mainlobe maintenance for FDA-MIMO radar |
| title_full | Mainlobe maintenance for FDA-MIMO radar |
| title_fullStr | Mainlobe maintenance for FDA-MIMO radar |
| title_full_unstemmed | Mainlobe maintenance for FDA-MIMO radar |
| title_short | Mainlobe maintenance for FDA-MIMO radar |
| title_sort | mainlobe maintenance for fda mimo radar |
| url | http://dx.doi.org/10.1063/5.0099177 |
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