22 September 2009 Validation of precise digital surface model generated by PRISM onboard ALOS
Author Affiliations +
Abstract
This paper describes the generation of precise digital surface model (DSM) and its validation using the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) onboard the Advanced Land Observing Satellite (ALOS, nicknamed "Daichi"), which was successfully launched on January 24, 2006, and has worked very well more than 3.5 years. PRISM performs along-track triplet stereo observations with a forward-, nadir-, and backward-looking radiometer with 2.5 m ground resolution at nadir in a 35 km-wide swath. It is used to derive a precise DSM or digital elevation model (DEM) with high spatial resolution. The sensor calibration is very important in achieving the precise DSM generation using PRISM stereo pair images. This paper introduces updated calibration results of ALOS optical instruments, focusing on PRISM, and including time trends of accuracy improvements. We have achieved 7.8 m (RMSE) of absolute geometric accuracy of the PRISM nadirlooking radiometer. The validation of generated PRISM DSM is shown using reference DSM acquired by airborne Lidar. The height accuracy of the PRISM DSM has achieved 5.2 m (RMSE). Based on these calibration and validation results, we also investigate the validation of the global DEM (GDEM) produced by ASTER onboard the TERRA satellite that was released on June 29, 2009 using generated DSMs by PRISM in terms of global evaluations.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takeo Tadono, Takeo Tadono, Masanobu Shimada, Masanobu Shimada, Junichi Takaku, Junichi Takaku, "Validation of precise digital surface model generated by PRISM onboard ALOS", Proc. SPIE 7474, Sensors, Systems, and Next-Generation Satellites XIII, 74740H (22 September 2009); doi: 10.1117/12.830828; https://doi.org/10.1117/12.830828
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT

Radiometric cross-calibration of Terra ASTER and MODIS
Proceedings of SPIE (September 07 2015)
Evolution Of The Octal Radiometer
Proceedings of SPIE (November 22 1982)
Overview of ALOS research and science program
Proceedings of SPIE (November 03 2004)
Advanced visible and near-IR radiometer for ADEOS
Proceedings of SPIE (July 31 1991)
Disaster monitoring by ALOS and follow-on mission
Proceedings of SPIE (December 11 2006)

Back to Top