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Table of Contents
1. Introduction
2. Sensors
3. Microwaves
4. Image Analysis
5. Applications

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Fundamentals of Remote Sensing

Chapter 5
 

5.2 Whiz Quiz

Crop Circles Seen from Space!

Crop circles seen in farmers' fields around the world (Landsat TM)

Every spring seems to bring a resurgence of the mysterious crop circles seen in farmers' fields around the world, often attributed to the work of aliens. Finally, these crop circles have been observed by a remote sensing device! Landsat TM captured this view while over southern Alberta. Look at the green circles on the image - how could they have been caused, other than by alien activity?
The answer is ...

Section 5.2 Did you know Section 5.2.1
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