Computer Science – Performance
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm...u31a01y&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #U31A-01 INVITED
Computer Science
Performance
1640 Remote Sensing, 1645 Solid Earth, 1694 Instruments And Techniques
Scientific paper
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a high spatial resolution multi-spectral imaging radiometer on NASA?s Terra satellite launched in December 1999. ASTER spectrally covers the visible and near-infrared (VNIR), short-wave-infrared (SWIR), and thermal infrared (TIR) regions with 14 spectral bands, 15 to 90 m spatial resolution, and 60 km imaging swath. Observational performance of the ASTER instrument was examined by using the actual ASTER images, and it was confirmed that the ASTER has excellent radiometric and geometric performance such as high SNR and MTF that exceed the specification. We have also confirmed that the ASTER level-1 data processing can successfully achieve the required band-to-band registration accuracies, 0.2 pixel within each telescope and 0.3 pixels among different telescopes respectively. In addition to the Level-1 data products, the ASTER standard data products include brightness temperature at sensor, relative spectral reflectance, relative spectral emissivity, surface radiance, surface reflectance, surface temperature, surface emissivity, digital elevation model (DEM), radiance at sensor with ortho-photo correction, and polar cloud map. We already obtained more than 160,000 ASTER scenes (one scene covers an area of 60 km by 60 km) since the launch till the end of February 2001. Currently ASTER is acquiring approximately 600 scenes per day as an average that is slightly lower than the maximum data rate capacity but is still on a satisfactory level. The ASTER data are being used for a variety of applications in earth sciences.
Fujisada Hiroyuki
Kahle Anne B.
Kato Mariko
Kudoh M.
Pniel Moshe
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