3.1. Types of Satellite Sensors and Imagery

Try these first

1. 1.

   What type of sensor relies on natural radiation?

   Hint

   Think about how they acquire data.

2. 2.

   What does panchromatic imagery capture?

   Hint

   Recall its primary color scheme.

3. 3.

   What type of sensor emits its own signals?

   • Passive Sensor
   • Active Sensor
   • Support Sensor

   Hint

   Think about action vs. observation.

4. 4.

   Is panchromatic imagery normally captured in multiple bands?

   • True
   • False

   Hint

   Recall its color and resolution.

5. 5.

   Compare and contrast the applications of passive and active sensors in monitoring environmental changes.

   Hint

   Consider their operational modes and the environmental contexts they best serve.

6. 6.

   Given a panchromatic image and a multispectral image, describe the steps needed to pan-sharpen the multispectral image.

   Hint

   Think about how combining these images can maximize the data captured.