PRISM: a panchromatic three-line sensor for mapping onboard ALOS

Yuji Osawa; Masaru Hiramatsu; K. Ichida

doi:10.1117/12.333627

21 December 1998 PRISM: a panchromatic three-line sensor for mapping onboard ALOS

Yuji Osawa, Masaru Hiramatsu, K. Ichida

Proceedings Volume 3498, Sensors, Systems, and Next-Generation Satellites II; (1998) https://doi.org/10.1117/12.333627
Event: Remote Sensing, 1998, Barcelona, Spain

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.

Citation Download Citation

Yuji Osawa, Masaru Hiramatsu, and K. Ichida "PRISM: a panchromatic three-line sensor for mapping onboard ALOS", Proc. SPIE 3498, Sensors, Systems, and Next-Generation Satellites II, (21 December 1998); https://doi.org/10.1117/12.333627

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