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GATE 2016 CE (CE2) – Question 33

Geomatics Engineering · Photogrammetry: scale, flying height, parallax, camera calibration · 1 mark · Multiple choice

Optimal flight planning for a photogrammetric survey should be carried out considering

  1. only side-lap
  2. only end-lap
  3. either side-lap or end-lap
  4. both side-lap as well as end-lap

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Show answer and explanation

Correct answer: (D) both side-lap as well as end-lap

Explanation

End-lap provides shared coverage between consecutive photographs along a flight strip and supports stereoscopic viewing. Side-lap provides common coverage between neighbouring strips and prevents gaps across the survey. Both are necessary for complete, connected photogrammetric coverage, so **D**.