An Investigation in Interference Suppression for HF Surface Wave Radar

Abstract

An evaluation of the performance of the coherent sidelobe cancellation (CSLC) techniques in suppressing nighttime co-channel communications interference and ionospheric clutter in HF surface wave radars operating in coastal regions was carried out. In particular, the optimum order of execution among the three signal processing functions: (1) Doppler processing, (2) digital beamforming and (3) interference cancellation was of interest, in terms of signal-to-interference-plus-noise ratio (SINR) improvement and angular accuracy. The optimum order of execution between the above mentioned operations depends on the characteristics of the interference. In terms of ionospheric clutter, there is insufficient information to arrive at definitive conclusions. A preliminary examination of the temporal, spatial and spectral characteristics of ionospheric clutter was carried out to aid in the development of mitigating algorithms.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA384407

Entities

People

  • Eric K. Hung
  • Hing C. Chan

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Antennas
  • Arrays
  • Beam Forming
  • Coastal Regions
  • Detection
  • Digital Signal Processing
  • Doppler Effect
  • Linear Arrays
  • National Security
  • Radar
  • Sea Clutter
  • Signal Processing
  • Surface Waves
  • Target Detection
  • Time Domain

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Radar Systems Engineering.
  • Systems Analysis and Design