A 1.56 THz Spot Scanning Radar Range for Fully Polarimetric W-Band Scale Model Measurements

Abstract

A radar transceiver operating at 1.56 THz was recently developed to obtain coherent, fully polarimetric W-band (98 GHz) Radar Cross Section (RCS) images of 1:16 scale-model targets. The associated optical system operates by scanning a small focused beam of swept frequency radiation across a scale-model target to resolve individual scattering centers and to obtain the scaled RCS values for the centers. Output from a tunable microwave source (10-17 GHz) is mixed with narrow band submillimeter-wave radiation in a Schottky diode mixer to produce the chirped transmit signal. Two high-frequency Schottky diode mixers are used for reception of the V-pol and H-pol receive states, with a fourth mixer providing a system phase reference. The full 2x2 complex polarization scattering matrix (PSM) for each resolved center is obtained following off-line data processing. Measurement examples of five simple calibration objects and a tank are presented.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2000
Accession Number
ADA462247

Entities

People

  • Guy B. Demartinis
  • Jerry Waldman
  • Michael J. Coulombe
  • Thomas M. Goyette
  • William Nixon

Organizations

  • University of Massachusetts Lowell

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Carbon Dioxide Lasers
  • Data Analysis
  • Detection
  • Electromagnetic Radiation
  • Frequency
  • Lasers
  • Measurement
  • Models
  • Radar
  • Radiation
  • Scale Models
  • Scanning
  • Scattering
  • Schottky Diodes
  • Terahertz Radiation
  • Three Dimensional
  • W Band

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Radar Systems Engineering.