Field measurement support for in-flight validation/calibration science
Betina Pavri
15 December 1999
- drive out to experiment location before sunrise; set up sun photometer at sunrise so it can track sun until after solar noon
- set up two tarps, 240m apart, with a line of flags between them, 1 flag every 20m. line should be aligned with flightline of plane over playa
- **collect several hundred spectra** in the 200m region between the tarps (none in the 20m pixels closest to each tarp) to completely characterize this region.
- derive average spectra for playa
- derive atmospheric transmission values from sun photometer measurements
- use playa spectra and atmospheric transmission to model at-AVIRIS radiance
- locate tarps in AVIRIS image, and extract radiance of 10 pixels between them
- compare this radiance with actual AVIRIS radiance, and compare results
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