ELECTRONIC COUNTERMEASURES SET AN/ALQ-17 (XY-2) VOLUME I. TEXT

Abstract

This effort resulted in the successful development of an airborne false target repeater, covering essentially the entire 2000 to 4000 mc frequency range. This represents an eightfold increase of frequency coverage over the initial feasibility model, AN/ALQ-17 (XY-1) which had a bandwidth of but 250 megacycles. Two particular advantages of the system are immediately apparent. First, the repeater techniques employed result in transmission of false target signals at a frequency identical to the true aircraft echo, including the same doppler shift. Further, frequency modulation present in the radar signal will also be repeated. These advantages are obtained by employing RF storage, which is accomplished by the use of ultrasonic fused silica delay lines. The equipment bandwidth coverage was made practical by an improvement in the state-of-the-art of the delay lines, which has resulted in the development of wideband high frequency lines (40 mc wide centered at 60 mc). (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1961
Accession Number
AD0325249

Entities

Organizations

  • ITT Corporation

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Bandwidth
  • Countermeasures
  • Delay Lines
  • Doppler Effect
  • Electronic Countermeasures
  • False Targets
  • Frequency
  • Frequency Modulation
  • Modulation
  • Optical Materials
  • Radar Signals
  • Repeaters
  • Targets

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Radio communications and signal processing.
  • Sensor Fusion and Tracking Systems.

Technology Areas

  • Microelectronics