RADIOMETRIC CALIBRATION METHOD FOR INFRARED DETECTORS

A method for radiometric calibration of an infrared detector, the infrared detector measuring a radiance received from a scene under observation, the method comprising: providing calculated calibration coefficients; acquiring a scene count of the radiance detected from the scene; calculating a scene...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VILLEMAIRE, ANDRE, BELHUMEUR, LOUIS, CHAMBERLAND, MARTIN, TREMBLAY, PIERRE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	COLORIMETRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION RADIATION PYROMETRY TESTING
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Beschreibung
Zusammenfassung:	A method for radiometric calibration of an infrared detector, the infrared detector measuring a radiance received from a scene under observation, the method comprising: providing calculated calibration coefficients; acquiring a scene count of the radiance detected from the scene; calculating a scene flux from the scene count using the calculated calibration coefficients; determining and applying a gain-offset correction using the calculated calibration coefficients to obtain a uniform scene flux. In one embodiment, the method further includes transforming the uniform scene flux to a radiometric temperature using the calculated calibration coefficients.