Accession Number:

ADA231203

Title:

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

Descriptive Note:

Corporate Author:

MITRE CORP BEDFORD MA

Personal Author(s):

Report Date:

1990-08-01

Pagination or Media Count:

24.0

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 signalnoise 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 signalnoise 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 signalnoise equation be amended to explicity yield these results rather than equivalent implicit results. Author

Subject Categories:

  • Cybernetics
  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE