Impulsive Noise Mitigation in Spatial and Temporal Domains for Surface-Wave Over-the-Horizon Radar

Abstract

Surface-wave over-the-horizon radars, especially ones located in tropical areas, such as Northern Australia, are usually strongly affected by external impulsive noise. Apart from thunderstorm activity, man-made (industrial) noise over typically quite long coherent-integration time often is of impulsive nature as well. In this paper we analyse the efficiency of temporal and spatial adaptive techniques for impulsive noise mitigation. We demonstrate that for heavily contaminated dwells, new spatio-temporal adaptive processing is most effective. Initial impulsive noise mitigation, produced by adaptive spatial processing is used for range and azimuth dependent sea-clutter spectrum estimation. Estimated sea-clutter spectrum is then used to 'restore' the 'missing' data, originally contaminated by impulsive noise.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA405479

Entities

People

  • Pavel Turcaj
  • Yuri I. Abramovich

Organizations

  • Cooperative Research Centre

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antennas
  • Australia
  • Clutter
  • Covariance
  • Frequency
  • Intervals
  • Noise
  • Numbers
  • Optimization
  • Sea Clutter
  • Sidelobes
  • Spectra
  • Standards
  • Surface Waves
  • Training
  • Visibility
  • Waves

Fields of Study

  • Environmental science

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Radar Systems Engineering.
  • Systems Analysis and Design