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Suomi NPP VIIRS Prelaunch and On-orbit Geometric Calibration and CharacterizationThe Visible Infrared Imager Radiometer Suite (VIIRS) sensor was launched 28 October 2011 on the Suomi National Polarorbiting Partnership (SNPP) satellite. VIIRS has 22 spectral bands covering the spectrum between 0.412 m and 12.01 m, including 16 moderate resolution bands (M-bands) with a spatial resolution of 750 m at nadir, 5 imaging resolution bands (I-bands) with a spatial resolution of 375 m at nadir, and 1 day-night band (DNB) with a near-constant 750 m spatial resolution throughout the scan. These bands are located in a visible and near infrared (VisNIR) focal plane assembly (FPA), a short- and mid-wave infrared (SWMWIR) FPA and a long-wave infrared (LWIR) FPA. All bands, except the DNB, are co-registered for proper environmental data records (EDRs) retrievals. Observations from VIIRS instrument provide long-term measurements of biogeophysical variables for climate research and polar satellite data stream for the operational communitys use in weather forecasting and disaster relief and other applications. Well Earth-located (geolocated) instrument data is important to retrieving accurate biogeophysical variables. This paper describes prelaunch pointing and alignment measurements, and the two sets of on-orbit correction of geolocation errors, the first of which corrected error from 1,300 m to within 75 m (20 I-band pixel size), and the second of which fine tuned scan angle dependent errors, bringing VIIRS geolocation products to high maturity in one and a half years of the SNPP VIIRS on-orbit operations. Prelaunch calibration and the on-orbit characterization of sensor spatial impulse responses and band-to-band co-registration (BBR) are also described.
Document ID
20140010285
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1002/jgrd.50873
Authors
Wolfe, Robert E. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Lin, Guoqing (INNOVIM Greenbelt, MD, United States)
Nishihama, Masahiro (Sigma Space Corp. Lanham, MD, United States)
Tewari, Krishna P. (INNOVIM Greenbelt, MD, United States)
Tilton, James C. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Isaacman, Alice R. (INNOVIM Greenbelt, MD, United States)
Date Acquired
July 29, 2014
Publication Date
October 22, 2013
Publication Information
Publication: Journal of Geophysical Research: Atmospheres
Publisher: Wiley
Volume: 118
Issue: 20
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN10242
GSFC-E-DAA-TN17655
Report Number: GSFC-E-DAA-TN10242
Report Number: GSFC-E-DAA-TN17655
Funding Number(s)
CONTRACT_GRANT: NNG09HP18C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Geolocation
pointing
control point matching

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