Active coupling radar array design approach for direction-of-arrival estimation
In this paper, space-constrained scenarios for radar arrays are investigated. To improve the performance of direction-of-arrival (DOA) estimation for both uniform linear and planar arrays, an innovative design approach for active coupling radar arrays is proposed. The proposed approach employs activ...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025021437 |
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| author | Jingyu Cong Huafei Wang Kai Xie Zhenmiao Deng |
| author_facet | Jingyu Cong Huafei Wang Kai Xie Zhenmiao Deng |
| author_sort | Jingyu Cong |
| collection | DOAJ |
| description | In this paper, space-constrained scenarios for radar arrays are investigated. To improve the performance of direction-of-arrival (DOA) estimation for both uniform linear and planar arrays, an innovative design approach for active coupling radar arrays is proposed. The proposed approach employs active coupling to increase the output signal-to-noise ratio (SNR) and expand the phase difference between array elements, without introducing any additional output loss, by designing appropriate active coupling gains. The experimental results show that the actively-coupled radar array adopting the proposed approach can achieve higher output SNR and narrower beam width than the same array without the proposed technique. Moreover, using the proposed method, the detection SNR threshold can be significantly improved, thus ensuring more accurate DOA estimation. This work paves the way for potentially more accurate DOA estimation in radar systems with limited antenna spacing. |
| format | Article |
| id | doaj-art-e8f137168cbf47f5a0cb6458792bac38 |
| institution | Matheson Library |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-e8f137168cbf47f5a0cb6458792bac382025-07-16T04:56:18ZengElsevierResults in Engineering2590-12302025-09-0127106071Active coupling radar array design approach for direction-of-arrival estimationJingyu Cong0Huafei Wang1Kai Xie2Zhenmiao Deng3Sun Yat-sen University, No. 66 Gongchang Road, Shenzhen, 518107, Guangdong, ChinaSun Yat-sen University, No. 66 Gongchang Road, Shenzhen, 518107, Guangdong, ChinaCorresponding author.; Sun Yat-sen University, No. 66 Gongchang Road, Shenzhen, 518107, Guangdong, ChinaSun Yat-sen University, No. 66 Gongchang Road, Shenzhen, 518107, Guangdong, ChinaIn this paper, space-constrained scenarios for radar arrays are investigated. To improve the performance of direction-of-arrival (DOA) estimation for both uniform linear and planar arrays, an innovative design approach for active coupling radar arrays is proposed. The proposed approach employs active coupling to increase the output signal-to-noise ratio (SNR) and expand the phase difference between array elements, without introducing any additional output loss, by designing appropriate active coupling gains. The experimental results show that the actively-coupled radar array adopting the proposed approach can achieve higher output SNR and narrower beam width than the same array without the proposed technique. Moreover, using the proposed method, the detection SNR threshold can be significantly improved, thus ensuring more accurate DOA estimation. This work paves the way for potentially more accurate DOA estimation in radar systems with limited antenna spacing.http://www.sciencedirect.com/science/article/pii/S2590123025021437RadarActive couplingDirection-of-arrival (DOA)Uniform linear array (ULA)Uniform planar array (UPA) |
| spellingShingle | Jingyu Cong Huafei Wang Kai Xie Zhenmiao Deng Active coupling radar array design approach for direction-of-arrival estimation Results in Engineering Radar Active coupling Direction-of-arrival (DOA) Uniform linear array (ULA) Uniform planar array (UPA) |
| title | Active coupling radar array design approach for direction-of-arrival estimation |
| title_full | Active coupling radar array design approach for direction-of-arrival estimation |
| title_fullStr | Active coupling radar array design approach for direction-of-arrival estimation |
| title_full_unstemmed | Active coupling radar array design approach for direction-of-arrival estimation |
| title_short | Active coupling radar array design approach for direction-of-arrival estimation |
| title_sort | active coupling radar array design approach for direction of arrival estimation |
| topic | Radar Active coupling Direction-of-arrival (DOA) Uniform linear array (ULA) Uniform planar array (UPA) |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025021437 |
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