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Direction of arriva...
Direction of arrival estimation using adaptive directional time-frequency distributions
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Ali Khan, N. (författare)
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Ali, S. (författare)
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- Jansson, Magnus (författare)
- KTH,Signalbehandling
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(creator_code:org_t)
- 2016-06-20
- 2018
- Engelska.
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Ingår i: Multidimensional systems and signal processing. - : Springer-Verlag New York. - 0923-6082 .- 1573-0824. ; 29:2, s. 503-521
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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visa färre...
Abstract
Ämnesord
Stäng
- Time-frequency distributions (TFDs) allow direction of arrival (DOA) estimation algorithms to be used in scenarios when the total number of sources are more than the number of sensors. The performance of such time-frequency (t-f) based DOA estimation algorithms depends on the resolution of the underlying TFD as a higher resolution TFD leads to better separation of sources in the t-f domain. This paper presents a novel DOA estimation algorithm that uses the adaptive directional t-f distribution (ADTFD) for the analysis of close signal components. The ADTFD optimizes the direction of kernel at each point in the t-f domain to obtain a clear t-f representation, which is then exploited for DOA estimation. Moreover, the proposed methodology can also be applied for DOA estimation of sparse signals. Experimental results indicate that the proposed DOA algorithm based on the ADTFD outperforms other fixed and adaptive kernel based DOA algorithms.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Adaptive directional Time-frequency distribution
- Direction of arrival estimation
- High resolution TFDs
- Instantaneous frequency estimation
- MUSIC
- Algorithms
- Frequency estimation
- Robustness (control systems)
- Source separation
- Time-frequency distributions
- Direction of arrival
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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