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SIGMA 0 [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2002-03-28

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Remote Sensing
DEF

Scattering coefficient, the conventional measure of the strength of radar signals reflected by a distributed scatterer [such as the sea surface].

OBS

It is a normalized dimensionless number, comparing the strength observed to that expected from an area of one m². Sigma naught is defined with respect to the nominally horizontal plane, and in general has a significant variation with incident angle, wavelength, polarization, as well as with the properties of the scattering surface itself.

OBS

sigma naught: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Télédétection
DEF

Coefficient de rétrodiffusion de l'onde radar à la surface de la mer.

OBS

sigma zéro : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

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