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Proceedings Paper • Open Access

Accuracy assessment of ALOS optical instruments: PRISM and AVNIR-2
Author(s): Takeo Tadono; Masanobu Shimada; Takanori Iwata; Junichi Takaku; Sachi Kawamoto

Paper Abstract

This paper describes the updated results of calibration and validation to assess the accuracies for optical instruments onboard the Advanced Land Observing Satellite (ALOS, nicknamed “Daichi”), which was successfully launched on January 24th, 2006 and it is continuously operating very well. ALOS has an L-band Synthetic Aperture Radar called PALSAR and two optical instruments i.e. the Panchromatic Remotesensing Instrument for Stereo Mapping (PRISM) and the Advanced Visible and Near Infrared Radiometer type-2 (AVNIR-2). PRISM consists of three radiometers and is used to derive a digital surface model (DSM) with high spatial resolution that is an objective of the ALOS mission. Therefore, geometric calibration is important in generating a precise DSM with stereo pair images of PRISM. AVNIR-2 has four radiometric bands from blue to near infrared and uses for regional environment and disaster monitoring etc. The radiometric calibration and image quality evaluation are also important for AVNIR-2 as well as PRISM.

This paper describes updated results of geometric calibration including geolocation determination accuracy evaluations of PRISM and AVNIR-2, image quality evaluation of PRISM, and validation of generated PRISM DSM. These works will be done during the ALOS mission life as an operational calibration to keep absolute accuracies of the standard products.

Paper Details

Date Published: 21 November 2017
PDF: 8 pages
Proc. SPIE 10566, International Conference on Space Optics — ICSO 2008, 105660G (21 November 2017); doi: 10.1117/12.2308203
Show Author Affiliations
Takeo Tadono, Japan Aerospace Exploration Agency (Japan)
Masanobu Shimada, Japan Aerospace Exploration Agency (Japan)
Takanori Iwata, Japan Aerospace Exploration Agency (Japan)
Junichi Takaku, Remote Sensing Technology Ctr. (Japan)
Sachi Kawamoto, Remote Sensing Technology Ctr. (Japan)

Published in SPIE Proceedings Vol. 10566:
International Conference on Space Optics — ICSO 2008
Josiane Costeraste; Errico Armandillo; Nikos Karafolas, Editor(s)

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