Use of the Lake Frome ground truth campaign as a cross-calibration of the Hyperion instrument

The Hyperion imaging spectrometer instrument was launched on the EO-1 spacecraft on November 24, 2000 into an orbit trailing Landsat 7 by one minute. Hyperion has a 7.5 km swath width, a 30 meter ground resolution and 10 nm spectral resolution. The first portion of the mission was used to measure and characterize the on-orbit radiometric, spectral, image quality and geometric performance of the instrument. Ground images were specifically collected for this characterization. This paper discusses the incorporation of a vicarious calibration site, Lake Frome in Australia, into the performance verification of the instrument. Coordination with CSIRO during a ground truth campaign resulted in image data collection on Hyperion over flights on December 20, 2000 and January 5 and 21, 2001 and provided an opportunity to compare predicted top of the atmosphere radiance from various sites at the time of the overpass for cross-calibration.