correction du diagramme de l'antenne

CONT: Application des corrections radiométriques suivantes, si nécessaire: correction du diagramme d'antenne; correction de la chute de gain en distance radiale [...]

CONT: Antenna pattern correction. The brightness of the image is affected by the antenna gain variation where the near range will receive maximum power while the far range will receive minimum power. This effect produces an image that varies in intensity (tone) along the range direction across the image. The antenna pattern effect is expressed as the energy returned to the radar and decreases dramatically as the range distance increases. Antenna pattern correction is applied to produce a uniform average brightness across the imaged swath.