Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array
This paper presents an L-shaped sparsely-distributed vector sensor (SD-VS) array with four different antenna compositions. With the proposed SD-VS array, a novel two-dimensional (2-D) direction of arrival (DOA) and polarization estimation method is proposed to handle the scenario where uncorrelated...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-05-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/16/6/789 |
| _version_ | 1817988810368090112 |
|---|---|
| author | Weijian Si Pinjiao Zhao Zhiyu Qu |
| author_facet | Weijian Si Pinjiao Zhao Zhiyu Qu |
| author_sort | Weijian Si |
| collection | DOAJ |
| description | This paper presents an L-shaped sparsely-distributed vector sensor (SD-VS) array with four different antenna compositions. With the proposed SD-VS array, a novel two-dimensional (2-D) direction of arrival (DOA) and polarization estimation method is proposed to handle the scenario where uncorrelated and coherent sources coexist. The uncorrelated and coherent sources are separated based on the moduli of the eigenvalues. For the uncorrelated sources, coarse estimates are acquired by extracting the DOA information embedded in the steering vectors from estimated array response matrix of the uncorrelated sources, and they serve as coarse references to disambiguate fine estimates with cyclical ambiguity obtained from the spatial phase factors. For the coherent sources, four Hankel matrices are constructed, with which the coherent sources are resolved in a similar way as for the uncorrelated sources. The proposed SD-VS array requires only two collocated antennas for each vector sensor, thus the mutual coupling effects across the collocated antennas are reduced greatly. Moreover, the inter-sensor spacings are allowed beyond a half-wavelength, which results in an extended array aperture. Simulation results demonstrate the effectiveness and favorable performance of the proposed method. |
| first_indexed | 2024-04-14T00:39:04Z |
| format | Article |
| id | doaj.art-c5379fad12bb47648ca80c8811818d6c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T00:39:04Z |
| publishDate | 2016-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c5379fad12bb47648ca80c8811818d6c2022-12-22T02:22:15ZengMDPI AGSensors1424-82202016-05-0116678910.3390/s16060789s16060789Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor ArrayWeijian Si0Pinjiao Zhao1Zhiyu Qu2College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaThis paper presents an L-shaped sparsely-distributed vector sensor (SD-VS) array with four different antenna compositions. With the proposed SD-VS array, a novel two-dimensional (2-D) direction of arrival (DOA) and polarization estimation method is proposed to handle the scenario where uncorrelated and coherent sources coexist. The uncorrelated and coherent sources are separated based on the moduli of the eigenvalues. For the uncorrelated sources, coarse estimates are acquired by extracting the DOA information embedded in the steering vectors from estimated array response matrix of the uncorrelated sources, and they serve as coarse references to disambiguate fine estimates with cyclical ambiguity obtained from the spatial phase factors. For the coherent sources, four Hankel matrices are constructed, with which the coherent sources are resolved in a similar way as for the uncorrelated sources. The proposed SD-VS array requires only two collocated antennas for each vector sensor, thus the mutual coupling effects across the collocated antennas are reduced greatly. Moreover, the inter-sensor spacings are allowed beyond a half-wavelength, which results in an extended array aperture. Simulation results demonstrate the effectiveness and favorable performance of the proposed method.http://www.mdpi.com/1424-8220/16/6/789DOA estimationpolarization estimationuncorrelated and coherent sourcessparsely-distributed vector sensor array |
| spellingShingle | Weijian Si Pinjiao Zhao Zhiyu Qu Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array Sensors DOA estimation polarization estimation uncorrelated and coherent sources sparsely-distributed vector sensor array |
| title | Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array |
| title_full | Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array |
| title_fullStr | Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array |
| title_full_unstemmed | Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array |
| title_short | Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array |
| title_sort | two dimensional doa and polarization estimation for a mixture of uncorrelated and coherent sources with sparsely distributed vector sensor array |
| topic | DOA estimation polarization estimation uncorrelated and coherent sources sparsely-distributed vector sensor array |
| url | http://www.mdpi.com/1424-8220/16/6/789 |
| work_keys_str_mv | AT weijiansi twodimensionaldoaandpolarizationestimationforamixtureofuncorrelatedandcoherentsourceswithsparselydistributedvectorsensorarray AT pinjiaozhao twodimensionaldoaandpolarizationestimationforamixtureofuncorrelatedandcoherentsourceswithsparselydistributedvectorsensorarray AT zhiyuqu twodimensionaldoaandpolarizationestimationforamixtureofuncorrelatedandcoherentsourceswithsparselydistributedvectorsensorarray |