18.1.3.4. Ground Control Points (GCPs)

Try these first

1. 1.

   Define what GCP stands for in surveying.

   Hint

   Think of the type of points used for accuracy in surveying.

2. 2.

   Why are GCPs important in aerial surveying?

   Hint

   Consider what would happen without them.

3. 3.

   What does GCP stand for?

   • Ground Control Point
   • Georeferenced Control Point
   • General Construction Point

   Hint

   What do we use for reference in aerial surveying?

4. 4.

   True or False: GCPs are used to enhance the accuracy of photogrammetric outputs.

   • True
   • False

   Hint

   Think about their purpose in mapping.

5. 5.

   Considering a remote area with limited accessibility, how would you adapt your GCP strategy?

   Hint

   Think about how technology can assist where access is difficult.

6. 6.

   In a scenario where bad weather prevents the establishment of ground control points, what alternative methods could be employed to ensure mapping accuracy?

   Hint

   Consider how to leverage other technologies in adverse conditions.