Induced-Current Interaction with Waves

Abstract

Microwave measurements have been made with a coherent radar in a wind-wave tank to determine the effect of induced current on backscatter. Perturbations were introduced into the wave structure by inducing a current in the water that flowed either with or against the wind. The effect of current on cross section was slight; the effect on the Doppler was much more pronounced. It was found that the wave components responsible for radar backscatter are predominantly free waves (that is, waves which travel at the dispersion velocity) rather than waves which are parasitic to (or locked to) the dominant waves.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA020163

Entities

People

  • D. E. Tremain
  • H. Guthart
  • K. A. Graf

Organizations

  • SRI International

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Backscattering
  • Dispersion Relations
  • Dispersions
  • Doppler Effect
  • Flow
  • Frequency
  • Hydrodynamics
  • K Band
  • Ka Band
  • Leading Edges
  • Measurement
  • Microwaves
  • Radar
  • Scattering
  • Water Flow
  • Wind Velocity
  • X Band

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Atmospheric Science/Meteorology