Broadband DOA Estimation Based on Nested Arrays
Direction of arrival (DOA) estimation is a crucial problem in electronic reconnaissance. A novel broadband DOA estimation method utilizing nested arrays is devised in this paper, which is capable of estimating the frequencies and DOAs of multiple narrowband signals in broadbands, even though they ma...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/974634 |
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| _version_ | 1850160218413989888 |
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| author | Zhi-bo Shen Chun-xi Dong Yang-yang Dong Guo-qing Zhao Long Huang |
| author_facet | Zhi-bo Shen Chun-xi Dong Yang-yang Dong Guo-qing Zhao Long Huang |
| author_sort | Zhi-bo Shen |
| collection | DOAJ |
| description | Direction of arrival (DOA) estimation is a crucial problem in electronic reconnaissance. A novel broadband DOA estimation method utilizing nested arrays is devised in this paper, which is capable of estimating the frequencies and DOAs of multiple narrowband signals in broadbands, even though they may have different carrier frequencies. The proposed method converts the DOA estimation of multiple signals with different frequencies into the spatial frequency estimation. Then, the DOAs and frequencies are pair matched by sparse recovery. It is possible to significantly increase the degrees of freedom (DOF) with the nested arrays and the number of sources can be more than that of sensor array. In addition, the method can achieve high estimation precision without the two-dimensional search process in frequency and angle domain. The validity of the proposed method is verified by theoretic analysis and simulation results. |
| format | Article |
| id | doaj-art-b40a67e6aa9d48aca7e798bf1d4f0dc3 |
| institution | OA Journals |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-b40a67e6aa9d48aca7e798bf1d4f0dc32025-08-20T02:23:12ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/974634974634Broadband DOA Estimation Based on Nested ArraysZhi-bo Shen0Chun-xi Dong1Yang-yang Dong2Guo-qing Zhao3Long Huang4The Key Laboratory of Electronic Information Countermeasure and Simulation Technology, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, ChinaThe Key Laboratory of Electronic Information Countermeasure and Simulation Technology, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, ChinaThe Key Laboratory of Electronic Information Countermeasure and Simulation Technology, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, ChinaThe Key Laboratory of Electronic Information Countermeasure and Simulation Technology, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, ChinaThe Key Laboratory of Electronic Information Countermeasure and Simulation Technology, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, ChinaDirection of arrival (DOA) estimation is a crucial problem in electronic reconnaissance. A novel broadband DOA estimation method utilizing nested arrays is devised in this paper, which is capable of estimating the frequencies and DOAs of multiple narrowband signals in broadbands, even though they may have different carrier frequencies. The proposed method converts the DOA estimation of multiple signals with different frequencies into the spatial frequency estimation. Then, the DOAs and frequencies are pair matched by sparse recovery. It is possible to significantly increase the degrees of freedom (DOF) with the nested arrays and the number of sources can be more than that of sensor array. In addition, the method can achieve high estimation precision without the two-dimensional search process in frequency and angle domain. The validity of the proposed method is verified by theoretic analysis and simulation results.http://dx.doi.org/10.1155/2015/974634 |
| spellingShingle | Zhi-bo Shen Chun-xi Dong Yang-yang Dong Guo-qing Zhao Long Huang Broadband DOA Estimation Based on Nested Arrays International Journal of Antennas and Propagation |
| title | Broadband DOA Estimation Based on Nested Arrays |
| title_full | Broadband DOA Estimation Based on Nested Arrays |
| title_fullStr | Broadband DOA Estimation Based on Nested Arrays |
| title_full_unstemmed | Broadband DOA Estimation Based on Nested Arrays |
| title_short | Broadband DOA Estimation Based on Nested Arrays |
| title_sort | broadband doa estimation based on nested arrays |
| url | http://dx.doi.org/10.1155/2015/974634 |
| work_keys_str_mv | AT zhiboshen broadbanddoaestimationbasedonnestedarrays AT chunxidong broadbanddoaestimationbasedonnestedarrays AT yangyangdong broadbanddoaestimationbasedonnestedarrays AT guoqingzhao broadbanddoaestimationbasedonnestedarrays AT longhuang broadbanddoaestimationbasedonnestedarrays |