Spectra Vista Corporation SVC HR-1024i, User Manual, Page: 80 / 118

SVC HR-1024i / HR-768i / HR-640i / HR-768si / HR-512i USER MANUAL REV 1.12
A P P E N D I C E S 7 5 7 5 7 5 7 5
F2 is the target radiance matching factor.
F3 is the reflectance matching factor.
25 data= None This tag marks the beginning of the spectral
data. The format of each line of spectral data is
described below in the SIG File Spectral Data
Format paragraph.
SIG File GPS Data Format
Note that the GPS information in the header is only available when an optional GPS data source is installed in the
PDA. When present, the GPS components have the following format:
GPS Longitude DDDmm.mmmmC
GPS Latitude DDmm.mmmmC
GPS Time HHmmSS.SSS
where:
D is degrees
m is decimal minutes
C is quadrant (N, S, E, W)
H is hours (GMT, 24-hour format)
S is seconds
Note that depending on the GPS source, the exact format may vary; for example, there may be fewer significant
decimal points present for the Lat/Lon “minutes” field, or the Time “seconds” field may be truncated to contain
only integral values.
SIG File Spectral Data Format
Following the header are four columns of data:
Column 1: Wavelengths (nanometers)
Column 2: Reference Values (see below)
Column 3: Target Values (see below)
Column 4: Reflectance (percent)
Reference/Target Values’ units depend on which calibration table or fore-optic was in use:
Radiance : 10 -10 * W/(cm² * nm * sr)
Irradiance : 10 -10 * W/(cm² * nm)
RAW DN : counts