Noise Factor and Antenna Gains in the Signal/Noise Equation for Over- the-Horizon Radar

Abstract

The prediction signal-to-noise ratio (SNR) of a radar or communication system is proportional to the power gain of the transmit antenna and the directive gain of the receive antenna, and is inversely proportional to the operating noise factor of the receiving system. The operating noise factor is approximately equal to the product of the external noise factor and the signal/noise processing factor when the system is external noise-limited, as is usually the case for over-the-horizon (OTH) radar. Unfortunately, the form of the signal/noise equation that is employed for some applications, particularly OTH radar, often does not explicity yield these results. It is recommended that the form of the signal/noise equation be amended to explicity yield these results rather than equivalent implicit results. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1990
Accession Number
ADA231203

Entities

People

  • Melvin M. Weiner

Organizations

  • MITRE Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bistatic Radar
  • Communication Systems
  • Detection
  • Frequency
  • Frequency Bands
  • Gain
  • Losses
  • Measurement
  • Noise (Radio)
  • Over The Horizon Radar
  • Power Gain
  • Radar
  • Radar Cross Sections
  • Radiation
  • Radiation Patterns
  • Signal Processing
  • Transmission Lines

Fields of Study

  • Engineering

Readers

  • Radar Systems Engineering.