AVIRIS Data Facility
The format and content of each file is described below.
Spectral Calibration File
This file shows band positions and widths and their corresponding uncertainties. Expressed as a C array:
float spectral_cal[224][5]
Column 1: Spectral band position
Band center wavelength, in nanometers
Column 2: Spectral response function
The full width @ half max (FWHM), in nanometers, of the spectral
response function (assumed to be Gaussian).
Column 3: Spectral band position uncertainty
AVIRIS uncertainty in the band center wavelength position
Column 4: Spectral response function uncertainty
AVIRIS FWHM uncertainty in nanometers
Column 5: Band number
Radiometric Calibration File
This file contains multipliers determined in the laboratory for converting DN values to units of radiance, along with the uncertainties of the coefficients. There are 224 rows, one per spectral band. Expressed as a C array:
float radiometric_cal[224][3]
Column 1: Radiance/DN
DN to radiance conversion factor.
Column 2: Radiance/DN uncertainty
Uncertainty in the Rad/DN number expressed a delta radiance/DN.
Column 3: Band Number
On-Board Calibration File
This file contains OBC high signal data derived from laboratory calibration data, and can be expressed as a C array as follows:
float obc_file[224][3]
Column 1: Radiance of a band
Column 2: Radiance error estimate
Column 3: Band number
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