Constant beamwidth generalised sidelobe canceller

Choo Leng Koh, Stephan Weiss

Research output: Contribution to conferencePaperpeer-review

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Abstract

In this paper, we proposed a constant beamwidth discrete Fourier transform (DFT) beamformer based on the generalised sidelobe canceller (GSC). Broadband signals are decomposed into frequency bins which are grouped into octaves and tapered individually. The resulting beampattern possesses constant beamwidth across the entire operating spectrum, thus ensuring uniform spatial resolution. Further incorporation of the GSC allows adaptive nulling of interference to coincide with uniform resolution, enhancing the beamformer’s performance. However, modification to the constraint equation of the standard GSC is required to account for the frequency-dependent weighting of sensors.
Original languageEnglish
Pages283-288
Number of pages6
DOIs
Publication statusPublished - 8 May 2006
EventIEEE 13th Workshop on Statistical Signal Processing -
Duration: 1 Jan 1900 → …

Conference

ConferenceIEEE 13th Workshop on Statistical Signal Processing
Period1/01/00 → …

Keywords

  • discrete Fourier transforms
  • array signal processing
  • apertures
  • frequency
  • interference
  • sensor arrays
  • spatial resolution

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