ASTER data has two kinds of misregistrations, (1) inter-telescope misregistration among VNIR, SWIR, and TIR, and (2) intra-telescope misregistration of SWIR. These misregistrations are caused by pointing inaccuracy and different look direction for each band of SWIR. To make registered images, these misregistrations should be corrected. Before the launch of ASTER, we need to establish the correction algorithms for these misregistrations. To evaluate the algorithms, we made the ASTER misregistered simulation data. This data includes the two misregistrations mentioned above. We used NASA/JPL's AVIRIS data for VNIR and SWIR bands, and NASA/JPL's TIMS data for TIR bands. We also used a digital elevation model (DEM) of 15 m grid interval to simulate the misregistration. The misregistrations of the data were corrected by the developers of algorithms, and we evaluated each correction algorithm. As the first step, we have made only the misregistered simulation data. However our goal is to evaluate the entire algorithms of ASTER level-1 processing, including misregistration corrections. So, we will make the ASTER simulation data, which includes other factors, in the future.

Date Published: 9 January 1995
PDF: 9 pages
Proc. SPIE 2317, Platforms and Systems, (9 January 1995); doi: 10.1117/12.198957

Published in SPIE Proceedings Vol. 2317:
Platforms and Systems
William L. Barnes; Brian J. Horais, Editor(s)