Question

Minimal number of ground control points are required for:

• A. \(\text{Analogue aerotriangulation} \)
• B. \(\text{Analytical aerotriangulation} \)
• C. \(\text{Automated aerotriangulation} \)
• D. \(\text{GPS aerotriangulation} \)

Hint:

Analytical aerotriangulation uses mathematical models to minimize the number of ground control points (GCPs) required.

Answer 1

The Correct Option is B

Step 1: Understanding ground control points in aerotriangulation. Ground control points (GCPs) are reference points on Earth's surface used to improve geometric accuracy in aerial mapping.
Step 2: Explanation of different aerotriangulation techniques. - Analogue aerotriangulation: Uses optical-mechanical devices; requires more GCPs. - Analytical aerotriangulation: Uses mathematical models and requires minimal GCPs. - Automated aerotriangulation: Relies on image matching techniques. - GPS aerotriangulation: Uses GPS data, reducing the need for GCPs.
Step 3: Selecting the correct option. Since analytical aerotriangulation requires the minimal number of GCPs, the correct answer is b. Analytical aerotriangulation.