A Theory of 'Squinted' Synthetic-Aperture Radar,

Abstract

A theory is developed that describes the processing of data collected with a satellite-borne or airborne synthetic-aperture radar (SAR). A description of the target-radar geometry, and the form of the received, demodulated radar signal is given. It is shown that the solution for the case in which the antenna is directed perpendicular to track (sidelooking), is obtained by a simplification of the general case in which the antenna is squinted with respect to the perpendicular to track. A mathematical description of the signal processing operations required to produce a SAR image from the received radar signal is presented and the form of the processed signal is described. In particular, a technique which employs two-dimensional matched filtering to produce the radar image is discussed and the ability of this approach to accommodate the coupling of the range (across-track) and azimuth (along-track) signals is investigated. In addition, the extensions to the theory required for non-coherent averaging are included. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1980
Accession Number
ADA096262

Entities

People

  • G. E. Haslam
  • M. R. Vant

Organizations

  • Communications Research Centre Canada

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Antennas
  • Artificial Satellites
  • Circular Orbits
  • Convolution Integrals
  • Coordinate Systems
  • Detectors
  • Geometry
  • Integrals
  • Matched Filters
  • Mathematical Analysis
  • Radar
  • Radar Signals
  • Shape
  • Signal Processing
  • Slant Range
  • Synthetic Aperture Radar
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Computer Vision.
  • Housing Policy Studies in Military Families with Privatization and Telomerase Allowance Units, Multi-Family Housing, and Telomere Lengths.
  • Radio communications and signal processing.

Technology Areas

  • Space
  • Space - Space Objects