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Fundamentals of Remote Sensing. Gathering information without physical contact. Can you sense things remotely?. Remote sensing may be accomplished in any of several ways. Close up. Caroline Wicks. Further away. A LOT further away. Organic content of soil.

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fundamentals of remote sensing

Fundamentals of Remote Sensing

Gathering information without physical contact

remote sensing may be accomplished in any of several ways
Remote sensing may be accomplished in any of several ways

Close up

Caroline Wicks

Further away

A LOT further away

slide5

Take a set of readings on the white background

Take a set of readings of Soil Sample 1

Divide Soil readings by white readings and multiply by 100

Repeat with Soil Sample 2

Graph your percentages vs. wavelength

slide6

1. Graph percent reflectance of soil 1 vs. wavelength.

2. Connect points with a solid line.

3. Graph percent reflectance of soil 2 vs. wavelength.

4. Connect points with a dotted line.

5. Make a legend.

so why can t we just use our eyes
So, why can’t we just use our eyes?
  • Oil or Algae?
  • How do you know?
they don t tell the whole story
They don’t tell the whole story!

Red Tide

(Algal Bloom)

Oil Spill

slide14
GOES

Photo: ESA

seawifs instrument package
SeaWiFS Instrument Package
  • Sea-viewing Wide Field of view Satellite
  • Carried on the satellite “Seastar”
  • Senses visible and NIR (near infra-red)
  • Ocean Color
true color imagery
True-Color Imagery

Land

Clouds

Water

slide25

Stream Sediments

Chesapeake Bay

brazil
Brazil

Rainforest

Ex-Rainforest

temperature
Temperature

A

21

20

3

4

2

1

20

22

32

28

26

28

5

7

8

6

28

30

26

27

B

B

A

slide30

20

21

22

20

26

28

28

32

26

27

28

30

using the ir thermometer
Using the IR Thermometer
  • DO NOT point the thermometer at another person.
  • Point at target and pull trigger.
  • Release and record the temperature in the appropriate spot on the recording grid.
  • Record about 4 temperatures per grid area.
  • Return to your seat and “color” mapping grid. Be sure to include a legend of colors.