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Article: Know Your Spatial Resolution


By IRISS, Inc

Spatial Resolution is also known as the Instantaneous Field of View (IFOV) or Spot Size. The limitations of the spatial resolution are due to the size and expense of the focal plane array (FPA). The FPA of many moderately priced cameras will have an array of 320 x 240 or 160 x 120 detectors. This may make it difficult to determine the temperature of small targets at a long distance.


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