Focusing ISAR Images Using the Adaptive Local Polynomial Fourier Transform

Abstract

The adaptive local polynomial Fourier transform is employed for the improvement of the ISAR images in complex reflector geometry cases, as well as in cases of fast maneuvering targets. It has been shown that this simple technique can produce significantly improved results with a relatively modest calculation burden. Two forms of the adaptive LPFT are proposed. The adaptive parameter in the first form is calculated for each radar chirp. An additional refinement is performed by using the information from the adjacent chirps. The second technique is based on the determination of the adaptive parameter for different parts of the radar image. The numerical analysis demonstrates the accuracy of the proposed techniques. It is important to note that the proposed technique does not assume any particular model of radar target motion. It can be applied for any realistic motion of targets.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2006
Accession Number
ADA456116

Entities

People

  • T. Thayaparan

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Classification
  • Detection
  • Frequency
  • Frequency Domain
  • Geometry
  • Images
  • Moving Targets
  • National Security
  • Numerical Analysis
  • Radar
  • Radar Images
  • Radar Targets
  • Reflectors
  • Security
  • Synthetic Aperture Radar
  • Targets
  • Two Dimensional

Fields of Study

  • Engineering

Readers

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