Physical Scale Modeling of VHF/UHF SAR Collection Geometries

Abstract

A method of physically modeling a linear flight path SAR collection in a scale-model VHF/UHF ISAR facility is presented. Accurate modeling of a SAR's collection geometry is necessary if meaningful comparisons are to be made between scale-model and field imagery. The advantage of collecting data in a linear flight path geometry is that height-unlimited focusing of scatterers can be achieved. The technique utilizes precise orientation of the target's azimuth and elevation relative to the fixed radar antenna, thereby effectively simulating a linear flight path collection. The impact of such a collection at VHF/UHF frequencies is demonstrated by comparing linear flight path ISAR imagery with traditional fixed grazing angle ISAR imagery. Both simulated and instrumented imagery will be presented.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2004
Accession Number
ADA461959

Entities

People

  • A. Gatesman
  • C. Beaudoin
  • Julia Waldman
  • M. Clinard
  • R. Giles
  • W. Nixon

Organizations

  • University of Massachusetts Lowell

Tags

DTIC Thesaurus Topics

  • Carrier Frequencies
  • Corner Reflectors
  • Flight Paths
  • Frequency
  • Frequency Bands
  • Geometry
  • Grazing Angles
  • Image Processing
  • Image Reconstruction
  • Mechanical Jamming
  • Plane Waves
  • Radar
  • Radiation Patterns
  • Reflectors
  • Scale Models
  • Scattering
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Image Processing and Computer Vision.
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space
  • Space - Space Objects
  • Space - Spacecraft Maneuvers