Fire and glint in AVHRR's channel 3: a possible reason for the non-saturation mystery

Evidence from a very strong and rare case of sunglint in a NOAA-11 AVHRR image is used to show that a problem exists in the on-board signal processing of channel 3. This problem, associated only with targets of high reflectivity and/or temperature, causes erroneous indication of digital counts (DN)...

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Veröffentlicht in:	International journal of remote sensing 1994-02, Vol.15 (3), p.711-718
Hauptverfasser:	SETZER, A. W., VERSTRAETE, M. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology External geophysics Geophysics. Techniques, methods, instrumentation and models Natural hazards: prediction, damages, etc
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Evidence from a very strong and rare case of sunglint in a NOAA-11 AVHRR image is used to show that a problem exists in the on-board signal processing of channel 3. This problem, associated only with targets of high reflectivity and/or temperature, causes erroneous indication of digital counts (DN) and calculated brightness temperatures for near-saturation ranges in channel 3 images. The explanation proposed, a spurious conversion of the sensor signal to DNs, fits observations of sunglint and fire detection data in AVHRR images of the NOAA-series satellites which could not otherwise be explained.
ISSN:	0143-1161 1366-5901
DOI:	10.1080/01431169408954111