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 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.
Bibliographic Reference: Article: International Journal of Remote Sensing, Vol. 15 (1994) No. 3, pp. 711-718
Record Number: 199410540 / Last updated on: 1994-11-28
Original language: en
Available languages: en