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Instrument: PRISM : Panchromatic Remote-sensing Instrument for Stereo Mapping |
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Associated Platforms ALOS Spectral/Frequency Information Wavelength Keyword: Visible Spectral/Frequency Coverage/Range: 0.52 ?m - 0.77 ?m Related Data Sets View all records related to this instrument Description The Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) is a panchromatic radiometer with 2.5-meter spatial resolution. Its data will be used for extracting highly accurate digital elevation model (DEM). The PRISM has three independent optical systems for nadir, forward and backward looking to achieve along-track stereoscopy. Each telescope consists of three mirrors and several CCD detectors for pushbroom scanning. The nadir-looking telescope provides 70 km width coverage; forward and backward telescopes provide 35 km width coverage each. The telescopes are installed on both side of its optical bench with precise temperature control. Forward and backward telescopes are inclined + and - 24 degrees from nadir to realize a base-to-height ratio of 1.0. PRISM's wide field of view (FOV) provides fully overlapped three-stereo (triplet) images (35 km width) without mechanical scanning or yaw steering of the satellite. Without this wide FOV, forward, nadir, and backward looking images would not overlap each other due to the Earth's rotation. [Summary provided by JAXA.] Online Resources http://www.eorc.jaxa.jp/hatoyama/satellite/sendata/prism_e.html Instrument Logistics Instrument Owner: JAPAN/JAXA |
