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- Trinh-Hoang, MinhTechnische Universität Darmstadt (author)
AN IMPROVED DOA ESTIMATOR BASED ON PARTIAL RELAXATION APPROACH
- Article/chapterEnglish2018
Publisher, publication year, extent ...
- 2018
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- LIBRIS-ID:oai:research.chalmers.se:fc261859-5ba0-4973-aba1-d7b96ce8d05f
- https://doi.org/10.1109/ICASSP.2018.8462295DOI
- https://research.chalmers.se/publication/507177URI
- https://research.chalmers.se/publication/506376URI
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- Language:English
- Summary in:English
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- In the partial relaxation approach, at each desired direction, the manifold structure of the remaining interfering signals impinging on the sensor array is relaxed, which results in closed form estimates for the interference parameters. By adopting this approach, in this paper, a new estimator based on the unconstrained covariance fitting problem is proposed. To obtain the null-spectra efficiently, an iterative rooting scheme based on the rational function approximation is applied. Simulation results show that the performance of the proposed estimator is superior to the classical and other partial relaxation methods, especially in the case of low number of snapshots, irrespectively of any specific structure of the sensor array while maintaining a reasonable computational cost.
Subject headings and genre
- NATURVETENSKAP Matematik Sannolikhetsteori och statistik hsv//swe
- NATURAL SCIENCES Mathematics Probability Theory and Statistics hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Signalbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Signal Processing hsv//eng
- DOA Estimation
- Partial Relaxation Approach
- Eigenvalue Decomposition
- Covariance Fitting
- Rank-one Modification Problem
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- Viberg, Mats,1961Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)viberg (author)
- Pesavento, MariusTechnische Universität Darmstadt (author)
- Technische Universität DarmstadtChalmers tekniska högskola (creator_code:org_t)
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- In:ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, s. 3246-32501520-6149
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