3. Satellite Image Processing

Try these first

1. 1.

   What is a passive sensor?

   Hint

   Think about sensors that use sunlight.

2. 2.

   Give one example of an active sensor.

   Hint

   These sensors emit their own signals.

3. 3.

   What is the main function of passive sensors?

   • Emit their own signals
   • Use natural radiation
   • Enhance existing images

   Hint

   Think about what kind of light they need.

4. 4.

   True or False: Active sensors require training data.

   • True
   • False

   Hint

   Focus on whether they receive signals or emit them.

5. 5.

   How would you explain the importance of preprocessing satellite images before analysis to a group of environmental scientists?

   Hint

   Consider why accuracy matters in scientific studies.

6. 6.

   In what situations would you recommend using an active sensor over a passive sensor for rural land surveys?

   Hint

   Think about visibility issues in different weather.