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Proceedings Paper

PRISM: a panchromatic three-line sensor for mapping onboard ALOS
Author(s): Yuji Osawa; Masaru Hiramatsu; K. Ichida
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Paper Abstract

This paper reports the results of the preliminary design and testing of the Panchromatic Remote Sensing Instrument for Stereo Mapping (PRISM) Bread-Board Model (BBM). PRISM is one of the major mission instruments to be installed on the Advanced Land Observing satellite (ALOS) which is expected to launch in early 2003 on a Japanese H-IIA vehicle. The PRISM system is designed to provide accurate data for making and updating maps on the 1/25,000 scale. That requires the PRISM system to be a high performance sensor with spatial resolution of 2.5 m and a wide swath of 70 km. To realize both capabilities, the optical system utilizes three-mirror, off axis anastigmatic designs with more than 28,000 detector elements which is realized by using multiple CCD senors. PRISM has three independent telescopes for stereoscopic imagery. These telescopes are arranged in order to obtain forward, nadir, and backward looking data. A set of three images is used for Digital Elevation Model (DEM) extraction. The current BBM phase of the project is underway to confirm the feasibility of the design. At the same time, the preliminary design is being used to understand the functions and characteristics of entire PRISM system.

Paper Details

Date Published: 21 December 1998
PDF: 8 pages
Proc. SPIE 3498, Sensors, Systems, and Next-Generation Satellites II, (21 December 1998); doi: 10.1117/12.333627
Show Author Affiliations
Yuji Osawa, National Space Development Agency of Japan (Japan)
Masaru Hiramatsu, NEC Corp. (Japan)
K. Ichida, NEC Corp. (Japan)

Published in SPIE Proceedings Vol. 3498:
Sensors, Systems, and Next-Generation Satellites II
Hiroyuki Fujisada, Editor(s)

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