5.1.2. Example 4.2

Try these first

1. 1.

   What is a Ground Control Point?

   Hint

   Think about how you stabilize your position in a photo.

2. 2.

   Name one type of control point used in radial triangulation.

   Hint

   Consider their roles in mapping.

3. 3.

   What do Ground Control Points (GCPs) assist with in mapping?

   • Determining altitude only
   • Identifying features in photographs
   • Establishing reference points for accurate mapping

   Hint

   Think about why we plot points in relation to something stable.

4. 4.

   True or False: Minor Control Points help to stabilize the scale in triangulation.

   • True
   • False

   Hint

   Recall the role of these points.

5. 5.

   Discuss the impact of not having sufficient ground control points on the accuracy of an aerial map.

   Hint

   Consider what could go wrong in your mapping project.

6. 6.

   How would you design a process to ensure that all control points are accurately identified and transferred across multiple photographs?

   Hint

   Think about the steps involved before actual mapping.