Multispectral Scanner. A line-scanning instrument flown on Landsat satellites that continually scans the Earth in a 185 km swath. On Landsat 1, 2, 4, and 5, the MSS had four spectral bands in the visible and near-infrared with an IFOV of 80 meters. Landsat-3 had a fifth band in the thermal infrared with an IFOV of 240 meters.
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