Computer Science – Performance
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001spie.4540...39f&link_type=abstract
Proc. SPIE Vol. 4540, p. 39-49, Sensors, Systems, and Next-Generation Satellites V, Hiroyuki Fujisada; Joan B. Lurie; Konradin W
Computer Science
Performance
Scientific paper
ASTER instrument on NASA Terra spacecraft has an along-track stereoscopic capability using one of the near infrared spectral bands. To acquire the stereo data, ASTER has two telescopes, one for nadir and another for backward viewing, with a base-to-height ratio of 0.6. The spatial resolution is 15 m in horizontal plane. Parameters such as the line-of- sight vectors and the pointing axis were adjusted during initial operation period to generate the Level-1 data products with the high quality stereo system performance. The accuracy of the stereo data generated from the Level-1A data is better than 10 m without GCP correction for individual scenes. Geolocation accuracy that is important for the DEM data sets is better than 50 m. This seems to be limited by the spacecraft position accuracy. The stereo system configuration, the method of parameter adjustment, DEM generation algorithm, and the final performance are described.
Fujisada Hiroyuki
Hara Seiichi
Iwasaki Akira
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