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Journal of Signal Processing Systems

, Volume 63, Issue 3, pp 277–286 | Cite as

Wideband Beamspace Processing Using Orthogonal Modal Beamformers

  • Thushara Dheemantha Abhayapala
  • Darren B. Ward
Article

Abstract

We introduce a novel beamspace processing structure that can be used for narrowband or wideband sources located either in nearfield or farfield of a sensor array. Main features of the new structure are: (i) a single parameter is used to steer the processor to any desired radial distance; (ii) a set of fixed frequency invariant orthogonal beamformers are used to transform array data into beamspace; and (iii) consequently, only a single set of beamspace weights are needed to process wideband beamspace data. The utility of the novel structure is illustrated by applications in interference cancellation and direction/range estimation.

Keywords

Broadband beamforming Array processing Adaptive arrays Direction estimation Interference cancellation Nearfield Sensor arrays 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Thushara Dheemantha Abhayapala
    • 1
  • Darren B. Ward
    • 2
  1. 1.Applied Signal Processing Group, Research School of Information Sciences and EngineeringThe Australian National UniversityCanberraAustralia
  2. 2.LondonUK

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