Electromagnetic Wave Propagation Over Large Rough Surfaces at Low Grazing Angles Using Periodic FMM

Abstract

Prediction of electromagnetic wave propagation over rough sea surfaces at low grazing angle is important in many areas of interest to the Navy, such as ship-to-ship communications and detection of low altitude targets over the sea. In order to reliably predict the radar coverage within an ocean environment, one must accurately account for the effects of the wind-driven ocean roughness on radar propagation. In general, the goal is to obtain knowledge of the mean value of the signal strength, the amplitude of the fluctuations about the mean, and the spectrum of the fluctuations.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2007
Accession Number
ADA541251

Entities

People

  • Ramakrishna Janaswamy

Organizations

  • University of Massachusetts Amherst

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Altitude
  • Amplitude
  • Angle Of Incidence
  • Coefficients
  • Detection
  • Electromagnetic Wave Propagation
  • Environment
  • Grazing
  • Grazing Angles
  • Low Altitude
  • Ocean Environments
  • Oceans
  • Roughness
  • Scattering
  • Spectra
  • Surface Roughness
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Coastal Oceanography
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Sensor Fusion and Tracking Systems.