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7 Cards in this Set
- Front
- Back
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Remote sensing
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Collecting data about something without measuring directly or being in direct contact
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Advantages of remote sensing
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allows us to view a large area, cuts down mapping time, composed of R,G,B primary colors, provides record of the landscape at a moment at time which can be preserved
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Basics
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Shortwave and longwave EMR, visible light, near IR, thermal, and radar,
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Active remote sensing
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Radar, Sonar, LIDAR
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Passive remote sensing
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Photography, Visible/IR imaging, thermal imaging
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Remote Sensing specifics
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spatial resolution- how big is the ground footprint of one pixel
Temporal resolution- how often can you obtain repeat coverage Spectral resolution- how many spectral "bands" are collected (Major types used in remote sensing is visible, NIR, thermal, radar) |
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Bandwith and display channel
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shows G, R, NIR/ shows B, G, R
NIR shows that vegetation is highly reflective |
