Array Mapping: Optimal Transformation Matrix Design
2002 (English)In: Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE , 2002, 2905-2908 p.Conference paper (Refereed)
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.
Antenna arrays, Arrays, Direction of arrival estimation
IdentifiersURN: urn:nbn:se:kth:diva-82687DOI: 10.1109/ICASSP.2002.5745256OAI: oai:DiVA.org:kth-82687DiVA: diva2:498509
Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing Orlando, FL, May 2002
NR 201408052012-02-122012-02-122012-04-02Bibliographically approved