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Delve into the world of remote sensing, from its inception in the early years to its current capabilities like imaging Yellowstone Fires in 1988. Explore how incoming solar energy interacts with surfaces to provide valuable data on land cover changes. Learn about the progression of common satellites like LANDSAT and how satellite sensors measure spectral and spatial resolutions for accurate imaging. Discover new technologies such as AVIRIS Hyperspectral Cube and LiDAR, offering unparalleled insights into environmental monitoring. This comprehensive guide sheds light on how remote sensing aids in understanding our planet's ecosystems.
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How it works Incoming solar energy Reflecting surfaces Scatter, absorb, and reflect light
Progression of common satellitesMSS spatial scale 20m, TM 30m
Satellite Sensors SatelliteSpatial ResolutionSpectral Resolution QuickBird 1-4meters .45-.90µm Ikonos1&2 1-4meters .45-.90µm SPOT HR-XS 10-20meters .51-1.75µm LANDSAT TM 7 (1) 15m .45-.515µm (2,3,4,5,7) 30m .525–2.35µm (6) 60m 2.09-2.35µm AVRIS 20m 224 bands
Keweenaw Peninsula, bands 2, 3 and 4 provide a color composite
AVRIS Hyperspectral Cube Airborne Visible/Infrared Imaging Spectrometer 224 spectral channels 400 – 2500 nm spectral resolution, 20 meter ground resolution. Brine Shrimp pond
LidarLight Detection and Ranging Visible portion of spectrum Excellent opportunities for vertical dimensions not for horizontal Data from Lefsky et al