Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays
Based on a dual-size shift invariance sparse linear array, this paper presents a novel algorithm for the localization of mixed far-field and near-field sources. First, by constructing a cumulant matrix with only direction-of-arrival (DOA) information, the proposed algorithm decouples the DOA estimat...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2018/3237167 |
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| author | Jiaqi Song Haihong Tao Jian Xie Chenwei Sun |
| author_facet | Jiaqi Song Haihong Tao Jian Xie Chenwei Sun |
| author_sort | Jiaqi Song |
| collection | DOAJ |
| description | Based on a dual-size shift invariance sparse linear array, this paper presents a novel algorithm for the localization of mixed far-field and near-field sources. First, by constructing a cumulant matrix with only direction-of-arrival (DOA) information, the proposed algorithm decouples the DOA estimation from the range estimation. The cumulant-domain quarter-wavelength invariance yields unambiguous estimates of DOAs, which are then used as coarse references to disambiguate the phase ambiguities in fine estimates induced from the larger spatial invariance. Then, based on the estimated DOAs, another cumulant matrix is derived and decoupled to generate unambiguous and cyclically ambiguous estimates of range parameter. According to the coarse range estimation, the types of sources can be identified and the unambiguous fine range estimates of NF sources are obtained after disambiguation. Compared with some existing algorithms, the proposed algorithm enjoys extended array aperture and higher estimation accuracy. Simulation results are given to validate the performance of the proposed algorithm. |
| format | Article |
| id | doaj-art-3a3629bb9cdd4e4abdb0d0a9bf39cae3 |
| institution | OA Journals |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-3a3629bb9cdd4e4abdb0d0a9bf39cae32025-08-20T02:24:14ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772018-01-01201810.1155/2018/32371673237167Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse SubarraysJiaqi Song0Haihong Tao1Jian Xie2Chenwei Sun3National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, ChinaBased on a dual-size shift invariance sparse linear array, this paper presents a novel algorithm for the localization of mixed far-field and near-field sources. First, by constructing a cumulant matrix with only direction-of-arrival (DOA) information, the proposed algorithm decouples the DOA estimation from the range estimation. The cumulant-domain quarter-wavelength invariance yields unambiguous estimates of DOAs, which are then used as coarse references to disambiguate the phase ambiguities in fine estimates induced from the larger spatial invariance. Then, based on the estimated DOAs, another cumulant matrix is derived and decoupled to generate unambiguous and cyclically ambiguous estimates of range parameter. According to the coarse range estimation, the types of sources can be identified and the unambiguous fine range estimates of NF sources are obtained after disambiguation. Compared with some existing algorithms, the proposed algorithm enjoys extended array aperture and higher estimation accuracy. Simulation results are given to validate the performance of the proposed algorithm.http://dx.doi.org/10.1155/2018/3237167 |
| spellingShingle | Jiaqi Song Haihong Tao Jian Xie Chenwei Sun Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays International Journal of Antennas and Propagation |
| title | Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays |
| title_full | Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays |
| title_fullStr | Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays |
| title_full_unstemmed | Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays |
| title_short | Mixed Far-Field and Near-Field Source Localization Algorithm via Sparse Subarrays |
| title_sort | mixed far field and near field source localization algorithm via sparse subarrays |
| url | http://dx.doi.org/10.1155/2018/3237167 |
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