essential
likely
maybe
probably not
Front (prompt)
The three types of optical remote sensing?
Plain English (default view) โ short, conversational, lightly seasoned with science
๐ฌ Scientific / formula (revealed on click) โ markdown + $$โฆ$$ ok
- ๐ **Multispectral** โ a few broad discrete bands - Examples: Landsat OLI, SPOT HRV, IKONOS, MODIS - Typical: 4โ10 bands across visible + NIR + SWIR - ๐ฅ **Thermal** โ one or more bands in 3โ14 ยตm IR - Examples: Landsat TIRS, ASTER thermal - Detects emitted heat (works day and night) - ๐ **Hyperspectral** โ hundreds of narrow contiguous bands - Examples: Hyperion (220 bands), AVIRIS - Identifies specific minerals, plant species, pollutants
๐ก Mnemonic / memory aid (shown on hover)
Multi = few (tens), Hyper = many (hundreds), Thermal = heat only. 'Hyper' literally means MORE โ that's the clue.
Cancel