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  1. [remote sensing] In satellite imagery, the number of degrees that the sensor varies from a vertical view when pointing directly downward from the platform. Also called angle of obliquity or elevation angle. Media\off-nadir.gif
  2. In imagery, the angle between the vertical from the sensor, or nadir (referring to the camera's perspective center to a point directly on the ground below the optics), and another point on the ground.

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