Chapter 5 — Exam Question 5

Explain the difference between IFOV and FOV.

Answer

•

IFOV

— (Instantaneous Field Of View) is the cone angle within which the

incident energy is focused on the detector (the angle through which the
detector ‘sees’).

•

FOV

— (Field Of View) expresses the total angle that is scanned. In air-

borne scanners it is usually expressed as an angle. For space-borne scan-
ners it expresses the effective image width (in metres).

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