Frequency Response Measurements on Lyman-Alpha Humidiometers.

Abstract

The primary instrument used for measuring high-frequency humidity fluctuations is the Lyman-alpha humidiometer; yet, there is virtually no published data on its frequency response. Attempting to fill this void, both amplitude and phase measurements were made on several such instruments. These measurements showed frequency responses (amplitude 3 dB down) ranging from approximately 160 to 800 Hz. Measurements of a specially modified unit showed no fundamental frequency limitation up to at least 10 kHz. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1982
Accession Number
ADA113240

Entities

People

  • J. T. Priestley
  • W. D. Cartwright

Organizations

  • National Oceanic and Atmospheric Administration

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Amplitude
  • Capacitors
  • Colorado
  • Detectors
  • Frequency
  • Frequency Response
  • Humidity
  • Measurement
  • Measuring Instruments
  • Military Research
  • Phase
  • Phase Measurement
  • Phase Meters
  • Phase Shift
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Mathematics or Statistics
  • Systems Analysis and Design