The Complex Point Spread Function of the RSRE SAR (Synthetic Aperture Radar),

Abstract

Super-resolution of SAR data requires that the complex point spread function (PSF) of the SAR be accurately known. We propose and implement a method of measuring the PSF which uses existing SAR images of targets as raw data. We find that in addition to the expected distortions of the azimuth response which arise from swing of the antenna and from artifacts of motion compensation processing, there are extensive and unexpected distortions of the principle of superposition (ie it is non-linear), and so SAR PSF calibration must be conducted with care. We estimate the complex SAR PSF when a bright target is present.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1987
Accession Number
ADA189011

Entities

People

  • S. P. Luttrell

Organizations

  • Royal Signals and Radar Establishment

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aircrafts
  • Amplitude
  • Antennas
  • Artifacts
  • Calibration
  • Coherent Radar
  • Compensation
  • Diffraction
  • Distortion
  • Equations
  • Frequency
  • High Resolution
  • Low Resolution
  • Power Spectra
  • Principle Of Superposition
  • Pulse Compression
  • Synthetic Aperture Radar

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Radar Systems Engineering.