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Array Mapping: Optimal Transformation Matrix Design
Swedish Defence Research Agency (FOI), Stockholm, Sweden.
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0002-6855-5868
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0003-2298-6774
2002 (English)In: Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE , 2002, 2905-2908 p.Conference paper, Published paper (Refereed)
Abstract [en]

Mapping of the data output vector from an existing antenna array onto the data vector of an imaginary array of more suitable configuration is well known in array signal processing. By mapping onto an array manifold of lower dimension or uniform structure for example., processing speed can be improved. Conditions for the retaining of DOA error variance under such mapping have been formulated by several authors but the equally important systematic mapping errors, the bias, has been less treated to date. This paper uses a geometrical interpretation of a Taylor expansion of the DOA estimator cost function to derive an alternative design of the mapping matrix that almost completely removes the bias. The key feature of the proposed design is that it takes the orthogonality between the manifold mapping errors and certain gradients of the estimator cost function into account.

Place, publisher, year, edition, pages
IEEE , 2002. 2905-2908 p.
Keyword [en]
Antenna arrays, Arrays, Direction of arrival estimation
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-82687DOI: 10.1109/ICASSP.2002.5745256OAI: oai:DiVA.org:kth-82687DiVA: diva2:498509
Conference
Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing Orlando, FL, May 2002
Note
NR 20140805Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2012-04-02Bibliographically approved

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Jansson, MagnusOttersten, Björn

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  • de-DE
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  • Other locale
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Output format
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