High resolution dsm generation from alos prism - processing status and influence of attitude fluctuation -

Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) carried at Advanced Land Observing Satellite (ALOS) was designed to generate worldwide topographic data in respects of its high resolution and stereoscopic land observation. Following accumulations of the on-orbit data since the launch, the characteristics of its sensor geometry and the capabilities to generate the Digital Surface Model (DSM) have been widely validated in Japan Aerospace Exploration Agency. This paper reports on the DSM processing status, over the four-year period of operations, including a mosaicking process and analysis of error characteristics. We especially focused on an occasional waving noise of the DSM caused by an attitude fluctuation of the satellite. Detailed analysis and correction methods on the waving noise are presented in this paper with inspection of satellite attitude data as well.