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Rochester Institute of Technology
SHARE 2012
SpecTIR Hyperspectral Airborne Experiment 2012

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ASD

The Analytical Spectral Devices FieldSpec Pro has a spectral range of 350- 2500 nanometers with a sampling interval of 1.4 nanometer from 350 - 1000 nm and 2 nanometers from 1000 -2500 nm. The Full width, Half max (FWHM) varies over the range from 3 nanometers at 700 nm to 10 nm at 1400 nm to 12 nm at 2100 nm. The fieldSpec Pro contains 3 detectors. One is a 512 element VNIR silicon photodiode array covering the 350 - 1000 nm range. The other two are separate TE cooled, graded index SWIR InGaAs photodiodes with complete the 1000 to 2500 nm range. The input to this system is a 1.4 m fiber optic light guide upon which can be fastened a variety of foreoptics. This experiment made extensive use of the 3 degree foreoptic, as well as the cosine diffuser and the high intensity contact probe was utilized in the lab for post collect measurements. This instrument, under perfect lighting conditions was capable of taking a measurement in just under 3 seconds, and was run off of wall power or external NiMH rechargeable cells over the course of the data campaign.

In-Scene Target Materials
Blue Felt Gray Canvas
Blue Cotton Camouflage Nets
Yellow Felt Red Felt
Yellow Cotton Blue Tarp
Pink Felt Brown Tarp
Gold Felt Montmorillonite
Green Felt Kaolite
Newsprint Magnetite
Black Felt Calcite
White Tyvek Muscovite
Gray Tarp Hematite
Analytical Spectral Devices FieldSpec Pro
Spectral Range 350-2500 nm
Sampling Interva 1.4 nm (350-1000 nm)
2 nm(100-2500 nm)
Spectral Resolution (FWHM) 3 nm at 700 nm
10 nm at 1400 nm
12 nm at 2100 nm
Input 1.4 m fiber optic light guide
Foreoptics 3°, Cosine diffuser, high intensity contact probe
Detectors One 512 element VNIR silicon photodiode array (350 - 1000 nm)
Two separate TE cooled, graded index SWIR InGaAs photodiodes (1000 - 2500 nm)
Typical Scan time < 3 seconds (perfect skies)