Remote Sensing What can we do with it?. The early years.

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Presentation transcript:

Remote Sensing What can we do with it?

The early years

Yellowstone Fires 1988, Recorded 7/2001

How it works Incoming solar energy Reflecting surfaces Scatter, absorb, and reflect light

Electromagnetic Energy and surface reflectance

Spectral Reflectance

Progression of common satellites MSS spatial scale 20m, TM 30m

Satellite Sensors SatelliteSpatial Resolution Spectral Resolution QuickBird1-4meters µ m Ikonos1&21-4meters µ m SPOTHR-XS10-20meters µ m LANDSAT TM 7(1)15m µ m (2,3,4,5,7) 30m.525 – 2.35 µ m (6)60m µ m AVRIS20m224 bands

Sun Synchronous Orbital Flight Row and Path

TM 30 meter multi-spectral imagery

Keweenaw Peninsula, bands 2, 3 and 4 provide a color composite

Summer AVHRR Composite Spatial Scale 1km

New Technologies

AVRIS Spectra

AVRIS Hyperspectral Cube Airborne Visible/Infrared Imaging Spectrometer 224 spectral channels 400 – 2500 nm spectral resolution, 20 meter ground resolution. Brine Shrimp pond

Lidar Light Detection and Ranging Visible portion of spectrum Excellent opportunities for vertical dimensions not for horizontal Data from Lefsky et al