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Proceedings Paper

Calibration of NPP VIIRS fire detection band using lunar observations
Author(s): Jeff McIntire; Boryana Efremova; Xiaoxiong Xiong
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Paper Abstract

The National Polar-orbiting Partnership (NPP) Visible Infrared Imager Radiometer Suite (VIIRS) includes a fire detection band at roughly 4 μm. This spectral band has two gain states; fire detection occurs in the low gain state above approximately 343 K. VIIRS thermal bands utilize an on-board blackbody to provide on-orbit calibration. However, as the maximum temperature of this blackbody is 315 K, the low gain state of the 4 μm band cannot be calibrated in the same manner. Regular observations of the Moon provide an alternative calibration source, as the maximum surface temperature is around 390 K. The periodic on-board high gain calibration along with a surface temperature map based on LRO DIVINER observations was used to determine the emissivity and reflected radiance of the lunar surface at 4 μm; these factors and the lunar data are then used to calibrate the low gain state of the fire band. Our analysis suggests that the responsivity of the low gain state is lower than the pre-launch value currently in use.

Paper Details

Date Published: 19 November 2012
PDF: 8 pages
Proc. SPIE 8533, Sensors, Systems, and Next-Generation Satellites XVI, 85331B (19 November 2012); doi: 10.1117/12.971228
Show Author Affiliations
Jeff McIntire, Sigma Space Corp. (United States)
Boryana Efremova, Sigma Space Corp. (United States)
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 8533:
Sensors, Systems, and Next-Generation Satellites XVI
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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