Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray
Sparse Bayesian inference for on-grid direction-of-arrival (DOA) estimation using difference coarray was investigated in the authors’ previous work to estimate more signal sources than the number of physical antenna elements. Sparse Bayesian inference is derived based on a linear inverse model and t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-10-01
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| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0806 |
| _version_ | 1819065753620447232 |
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| author | Yanan Ma Xianbin Cao Xiangrong Wang |
| author_facet | Yanan Ma Xianbin Cao Xiangrong Wang |
| author_sort | Yanan Ma |
| collection | DOAJ |
| description | Sparse Bayesian inference for on-grid direction-of-arrival (DOA) estimation using difference coarray was investigated in the authors’ previous work to estimate more signal sources than the number of physical antenna elements. Sparse Bayesian inference is derived based on a linear inverse model and the DOAs of incident signals are indicated by the sparse support of the power spectrum for a predefined dictionary. Thus, the DOA estimation accuracy of Bayesian inference is limited by the accuracy of power estimation. An enhanced off-grid DOA estimation algorithm by combining coarray Bayesian inference with power correction is proposed in this study. Simulation results show that the additional step of corrected power increases the DOA estimation accuracy significantly. |
| first_indexed | 2024-12-21T15:51:29Z |
| format | Article |
| id | doaj.art-28f526d6856c41a3b69565486c21fca2 |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-21T15:51:29Z |
| publishDate | 2019-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-28f526d6856c41a3b69565486c21fca22022-12-21T18:58:12ZengWileyThe Journal of Engineering2051-33052019-10-0110.1049/joe.2019.0806JOE.2019.0806Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarrayYanan Ma0Xianbin Cao1Xiangrong Wang2Beihang UniversityBeihang UniversityBeihang UniversitySparse Bayesian inference for on-grid direction-of-arrival (DOA) estimation using difference coarray was investigated in the authors’ previous work to estimate more signal sources than the number of physical antenna elements. Sparse Bayesian inference is derived based on a linear inverse model and the DOAs of incident signals are indicated by the sparse support of the power spectrum for a predefined dictionary. Thus, the DOA estimation accuracy of Bayesian inference is limited by the accuracy of power estimation. An enhanced off-grid DOA estimation algorithm by combining coarray Bayesian inference with power correction is proposed in this study. Simulation results show that the additional step of corrected power increases the DOA estimation accuracy significantly.https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0806direction-of-arrival estimationbayes methodspower spectrumdoa estimation accuracypower estimationoff-grid doa estimation algorithmcoarray bayesian inferencepower correctioncorrected power bayesian inferencedifference coarraysparse bayesian inferenceon-grid direction-of-arrival estimationsignal sourceslinear inverse modelincident signals |
| spellingShingle | Yanan Ma Xianbin Cao Xiangrong Wang Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray The Journal of Engineering direction-of-arrival estimation bayes methods power spectrum doa estimation accuracy power estimation off-grid doa estimation algorithm coarray bayesian inference power correction corrected power bayesian inference difference coarray sparse bayesian inference on-grid direction-of-arrival estimation signal sources linear inverse model incident signals |
| title | Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray |
| title_full | Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray |
| title_fullStr | Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray |
| title_full_unstemmed | Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray |
| title_short | Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray |
| title_sort | enhanced off grid doa estimation by corrected power bayesian inference using difference coarray |
| topic | direction-of-arrival estimation bayes methods power spectrum doa estimation accuracy power estimation off-grid doa estimation algorithm coarray bayesian inference power correction corrected power bayesian inference difference coarray sparse bayesian inference on-grid direction-of-arrival estimation signal sources linear inverse model incident signals |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0806 |
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