CURVES OF ATMOSPHERIC-ABSORPTION LOSS FOR USE IN RADAR RANGE CALCULATION

Abstract

The attenuation of radar signals due to absorption by atmospheric oxygen and water vapor was calculated for a surface-based radar as a function of the target range and elevation angle, for frequencies in the range 100 to 10,000 mc, employing the theory of Van Vleck. The results are presented in the form of curves that are especially adapted to use in calculating radar maximum range. Limitations of the theory, particularly in the assignment of values to the line- breadth factors and in the details of the collision-broadening formulas are discussed. It was concluded that these limitations are not likely to produce serious errors. Comparison is made with attenuation calculations made by others for ray paths through the entire atmosphere.

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Document Details

Document Type
Technical Report
Publication Date
Mar 23, 1961
Accession Number
AD0255135

Entities

People

  • L. V. Blake

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Altitude
  • Atmospheric Attenuation
  • Attenuation
  • Collisions
  • Elevation
  • Errors
  • Frequency
  • Government Procurement
  • Losses
  • Measurement
  • Military Research
  • Radar
  • Radio Waves
  • Sea Level
  • Standards
  • Water Vapor

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Radar Systems Engineering.