On-Orbit Measurement of the Focal Length of the SNPP VIIRS Instrument

Authors :: Tilton, James C
Wolfe, Robert E
Lin, Guoqing (Gary)
Yin, Zhangshi (Albert)
Source :: Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS).
Publication Year :: 2017
Publisher :: United States: NASA Center for Aerospace Information (CASI), 2017.
Abstract: The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument is a whiskbroom system with 22 spectral bands split between 16 moderate resolution bands (M-bands), five imagery resolution bands (I-bands) and a panchromatic day-night band. Latitude and Longitude geolocation data are generated for each pixel at the M-band, I-band and day-night band spatial resolutions based upon various instrument parameters including focal length. In this study we measure the focal length of the VIIRS instrument from on-orbit data. This is achieved by simulating VIIRS band I2 using Landsat 8 OLI band 5 utilizing the VIIRS instrument system point spread function (PSF) and geolocation data generated with varying values of focal length. The focal length value that produces the highest spatial correlation between the original and simulated VIIRS data is taken to be the measured instrument focal length.

Language :: English
ISBN :: 978-1-5090-4951-6
ISSN :: 21537003
ISBNs :: 9781509049516
Database :: NASA Technical Reports
Journal :: Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Notes :: NNG15HQ01C
Publication Type :: Report
Accession number :: edsnas.20190018204
Document Type :: Report
Full Text :: https://doi.org/10.1109/IGARSS.2017.8127890