4.15. Photogrammetric Mapping

Try these first

1. 1.

   What is photogrammetric mapping?

   Hint

   Think of it as using photos to create maps.

2. 2.

   What are ground control points?

   Hint

   They are essential for ensuring map accuracy.

3. 3.

   What is the main purpose of photogrammetric mapping?

   • To create artistic photographs
   • To evaluate and measure land
   • To conduct geological surveys

   Hint

   Remember the relationship between photography and mapping.

4. 4.

   True or False: Digital photogrammetry is slower than manual methods.

   • True
   • False

   Hint

   Consider the efficiencies that come with technology.

5. 5.

   Consider a terrain area of 200 km². If multiple overlapping images are required for detailed mapping, how would you calculate the number of aerial photographs needed?

   Hint

   Review the concepts of area measurement in photogrammetry.

6. 6.

   During a photogrammetric mapping exercise, it was found that discrepancies in ground control points exceeded acceptable limits. What steps could be taken to address this issue?

   Hint

   Consider alignment importance and error-checking protocols.