EVEOSD - Evaluation and Validation of EO-1 for Sustainable Development

• Abstract for EVEOSD
• EVEOSD project
• EVEOSD team
• EO-1 sensors
• EVEOSD partners

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EO-1 sensors

All EO-1 sensor data is referenced from the NASA EO-1 Webpage

Three imaging sensors will be used on the EO-1 spacecraft. They are:

• Hyperion,
• Advanced Land Imager (ALI),
• Atmospheric Corrector (AC)

Hyperion sensor

All EO-1 sensor data is referenced from the NASA EO-1 Webpage.

The Hyperion (Hyperspectral Imager) provides a new class of Earth observation data for improved Earth surface characterization. The Hyperion provides a science grade instrument quality calibration based on heritage from the LEWIS Hyperspectral Imaging Instrument (HSI). The Hyperion capabilities provide resolution of surface properties into hundreds of spectral bands, versus the ten multispectral bands flown on traditional Landsat imaging missions. Through these large number of spectral bands, complex land eco-systems shall be imaged and accurately classified.

The Hyperion provides a high resolution hyperspectral imager capable of resolving 220 spectral bands (from .4 to 2.5 µm) with a 30 meter resolution. The instrument can image a 7.5 km by 100 km land area per image and provide detailed spectral mapping across all 220 channels with high radiometric accuracy. The instrument originally conceived a drop in to the ALI instrument and is now baselined to be a standalone instrument on EO-1.

The Hyperion is a project of TRW. For more information on the Hyperion visit here.

Advanced Land Imager

All EO-1 sensor data is referenced from the NASA EO-1 Webpage

The Earth Observing-1 (EO-1) Advanced Land Imager (ALI) is the first Earth-Observing instrument to be flown under NASA's New Millennium Program (NMP). The ALI employs novel wide-angle optics and a highly integrated multispectral and panchromatic spectrometer.

Operating in a pushbroom fashion at an orbit of 705 km, the ALI will provide Landsat type panchromatic and multispectral bands. These bands have been designed to mimic six Landsat bands with three additional bands covering 0.433-0.453, 0.845-0.890, and 1.20-1.30 µm. The ALI also contains wide-angle optics designed to provide a continuous 15° x 1.625° field of view for a fully populated focal plane with 30-meter resolution for the multispectral pixels and 10 meter resolution for the panchromatic pixels.

For more information on the Advanced Land Imager visit here.

Atmospheric corrector

All EO-1 sensor data is referenced from the NASA EO-1 Webpage.

Earth imagery is degraded by atmospheric absorption and scattering. The New Millennium Program's Earth Observing-1 Mission (EO-1) will provide the first space-based test of an Atmospheric Corrector (AC) for increasing the accuracy of surface reflectance estimates.

The Atmospheric Corrector (AC) provides the following capabilities via a compact and simple bolt on design for future Earth Science, land imaging missions:

• High spectral, moderate spatial resolution hyperspectral imager using a wedge filter technology.
• Spectral coverage of .85-1.5 um, bands are selected for optimal correction of high spatial resolution images.
• Correction of surface imagery for atmosphericvariability (primarily water vapor).

For more information on the Atmospheric Corrector visit here.

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