Stochastic-Constraints Method in Nonstationary Hot-Clutter Cancellation Part I: Fundamentals and Supervised Training Applications

Abstract

We consider the use of spatio-temporal adaptive array processing in over-the-horizon radar applications in order to remove nonstationary multipath interference, known as "hot clutter". Since the spatio-temporal properties of hot clutter cannot be assumed constant over the coherent processing interval, conventional adaptive techniques fail to provide effective hot-clutter mitigation without simultaneously degrading the, properties of the backscattered radar signals, known as "cold clutter". The approach presented incorporates multiple "stochastic" (data dependent) constraints to achieve effective hotelutter suppression, whilst maintaining distortionless output cold-clutter post-processing stationarity.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2003
Accession Number
ADP014043

Entities

People

  • Yuri I. Abramovich

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Antenna Arrays
  • Antennas
  • Covariance
  • Detection
  • Doppler Effect
  • Frequency
  • Information Processing
  • Information Science
  • Multiple Input Multiple Output
  • Over The Horizon Radar
  • Radar
  • Scattering
  • Sky Waves
  • Standards
  • Surface Waves
  • Waves

Fields of Study

  • Engineering

Readers

  • Neural Network Machine Learning.
  • Phased Array Antenna Design.
  • Radar Systems Engineering.