2.8 Micron Infrared Heterodyne Radiometer.

Abstract

A gain modulated, Dicke switched Infrared Heterodyne Radiometer (IHR) has been designed, developed, and tested which is capable of measuring the atmospheric absorption characteristics within a 200 MHz bandwidth about selected hyrdogen fluoride (HF) laser transistions between 2.7 and 3.1 micrometers. The IHR has been installed in a KC-135 test aircraft. Provisions for remote control and remote calibration were incorporated into the radiometer. The heterodyne receiver sensitivity (NEP) of the IHR is 1.3 times 10 to the -19th power W/Hz and the calculated temperature resolution (delta T sub S/T sub S) is given for a variety of source temperatures and total transmittances (alpha). (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1978
Accession Number
ADA058266

Entities

People

  • D. Yustein
  • J. Wolczok
  • R. Lange

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Accuracy
  • Air Force
  • Aircrafts
  • Amplifiers
  • Bandwidth
  • Detection
  • Detectors
  • Frequency
  • Hydrogen Fluoride Lasers
  • Lasers
  • Local Oscillators
  • Measurement
  • Military Aircraft
  • Quantum Efficiency
  • Radiation
  • Radio Frequency

Fields of Study

  • Physics

Readers

  • Radar Systems Engineering.
  • Spectroscopy.
  • Theoretical Analysis.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers